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ethabi

The ABI, Application Binary Interface, is basically how you call functions in a contract and get data back.

An ABI determines such details as how functions are called and in which binary format information should be passed from one program component to the next...

An Ethereum smart contract is bytecode, EVM, on the Ethereum blockchain. Among the EVM, there could be several functions in a contract. An ABI is necessary so that you can specify which function in the contract to invoke, as well as get a guarantee that the function will return data in the format you are expecting. read more

This library encodes function calls and decodes their output.

Documentation

Disclaimer

This library intends to support only valid ABIs generated by recent Solidity versions. Specifically, we don't intend to support ABIs that are invalid due to known Solidity bugs or by external libraries that don't strictly follow the specification. Please make sure to pre-process your ABI in case it's not supported before using it with ethabi.

Installation

cargo install ethabi-cli

Usage

Ethereum ABI coder.
Copyright 2016-2017 Parity Technologies (UK) Limited
Usage:
ethabi encode function <abi-path> <function-name-or-signature> [-p <param>]... [-l | --lenient]
ethabi encode params [-v <type> <param>]... [-l | --lenient]
ethabi decode function <abi-path> <function-name-or-signature> <data>
ethabi decode params [-t <type>]... <data>
ethabi decode log <abi-path> <event-name-or-signature> [-l <topic>]... <data>
ethabi -h | --help
Options:
-h, --help Display this message and exit.
-l, --lenient Allow short representation of input params.
Commands:
encode Encode ABI call.
decode Decode ABI call result.
function Load function from json ABI file.
params Specify types of input params inline.
log Decode event log.

Examples

ethabi encode params -v bool 1

0000000000000000000000000000000000000000000000000000000000000001

--

ethabi encode params -v bool 1 -v string gavofyork -v bool 0

00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000

--

ethabi encode params -v bool[] [1,0,false]

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

--

ethabi encode params -v '(string,bool,string)' '(test,1,cyborg)'

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000004746573740000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066379626f72670000000000000000000000000000000000000000000000000000

--

ethabi encode function examples/test.json foo -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]

455575780000000000000000000000000000000000000000000000000000000000000001

--

ethabi encode function examples/test.json foo(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]

455575780000000000000000000000000000000000000000000000000000000000000001

--

ethabi encode function examples/test.json bar(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]

6fae94120000000000000000000000000000000000000000000000000000000000000001

--

ethabi encode function examples/test.json bar(string):(uint256) -p 1

[{
"type":"function",
"inputs": [{
"type":"string"
}],
"name":"foo",
"outputs": [{
"type": "uint256"
}]
}]

d473a8ed000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000013100000000000000000000000000000000000000000000000000000000000000

--

ethabi decode params -t bool 0000000000000000000000000000000000000000000000000000000000000001

bool true

--

ethabi decode params -t bool -t string -t bool 00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000

bool true
string gavofyork
bool false

--

ethabi decode params -t bool[] 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

bool[] [true,false,false]

--

ethabi decode params -t '(string,bool,string)' 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000673706972616c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000067175617361720000000000000000000000000000000000000000000000000000```

(string,bool,string) (spiral,true,quasar)

--

ethabi decode function ./examples/foo.json bar 0000000000000000000000000000000000000000000000000000000000000001

[{
"constant":false,
"inputs":[{
"name":"hello",
"type":"address"
}],
"name":"bar",
"outputs":[{
"name":"",
"type":"bool"
}],
"type":"function"
}]

bool true

--

ethabi decode log ./examples/event.json Event -l 0000000000000000000000000000000000000000000000000000000000000001 0000000000000000000000004444444444444444444444444444444444444444

a bool true
b address 4444444444444444444444444444444444444444

About

Encode and decode smart contract invocations

Resources

Readme
Apache-2.0 license

Security policy

Security policy
Activity
Custom properties

Stars

12 stars

Watchers

0 watching

Forks

2 forks
Report repository

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Used by

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Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
Repository files navigation
ethabi
The ABI, Application Binary Interface, is basically how you call functions in a contract and get data back.
An ABI determines such details as how functions are called and in which binary format information should be passed from one program component to the next...
An Ethereum smart contract is bytecode, EVM, on the Ethereum blockchain. Among the EVM, there could be several functions in a contract. An ABI is necessary so that you can specify which function in the contract to invoke, as well as get a guarantee that the function will return data in the format you are expecting. read more
This library encodes function calls and decodes their output.
Documentation
Disclaimer
This library intends to support only valid ABIs generated by recent Solidity versions. Specifically, we don't intend to support ABIs that are invalid due to known Solidity bugs or by external libraries that don't strictly follow the specification.
Please make sure to pre-process your ABI in case it's not supported before using it with ethabi.
Installation
cargo install ethabi-cli

Usage
Ethereum ABI coder.
Copyright 2016-2017 Parity Technologies (UK) Limited
Usage:
ethabi encode function <abi-path> <function-name-or-signature> [-p <param>]... [-l | --lenient]
ethabi encode params [-v <type> <param>]... [-l | --lenient]
ethabi decode function <abi-path> <function-name-or-signature> <data>
ethabi decode params [-t <type>]... <data>
ethabi decode log <abi-path> <event-name-or-signature> [-l <topic>]... <data>
ethabi -h | --help
Options:
-h, --help Display this message and exit.
-l, --lenient Allow short representation of input params.
Commands:
encode Encode ABI call.
decode Decode ABI call result.
function Load function from json ABI file.
params Specify types of input params inline.
log Decode event log.

Examples
ethabi encode params -v bool 1

0000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode params -v bool 1 -v string gavofyork -v bool 0

00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000
--
ethabi encode params -v bool[] [1,0,false]

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
--
ethabi encode params -v '(string,bool,string)' '(test,1,cyborg)'

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000004746573740000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066379626f72670000000000000000000000000000000000000000000000000000
--
ethabi encode function examples/test.json foo -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json foo(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
6fae94120000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(string):(uint256) -p 1

[{
"type":"function",
"inputs": [{
"type":"string"
}],
"name":"foo",
"outputs": [{
"type": "uint256"
}]
}]
d473a8ed000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000013100000000000000000000000000000000000000000000000000000000000000
--
ethabi decode params -t bool 0000000000000000000000000000000000000000000000000000000000000001

bool true
--
ethabi decode params -t bool -t string -t bool 00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000

bool true

string gavofyork

bool false
--
ethabi decode params -t bool[] 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

bool[] [true,false,false]
--
ethabi decode params -t '(string,bool,string)' 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000673706972616c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000067175617361720000000000000000000000000000000000000000000000000000```

(string,bool,string) (spiral,true,quasar)
--
ethabi decode function ./examples/foo.json bar 0000000000000000000000000000000000000000000000000000000000000001

[{
"constant":false,
"inputs":[{
"name":"hello",
"type":"address"
}],
"name":"bar",
"outputs":[{
"name":"",
"type":"bool"
}],
"type":"function"
}]
bool true
--
ethabi decode log ./examples/event.json Event -l 0000000000000000000000000000000000000000000000000000000000000001 0000000000000000000000004444444444444444444444444444444444444444

a bool true

b address 4444444444444444444444444444444444444444
About
Encode and decode smart contract invocations
Resources
Readme
Apache-2.0 license
Security policy
Security policy
Activity
Custom properties
Stars
12 stars
Watchers
0 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
ethabi
The ABI, Application Binary Interface, is basically how you call functions in a contract and get data back.
An ABI determines such details as how functions are called and in which binary format information should be passed from one program component to the next...
An Ethereum smart contract is bytecode, EVM, on the Ethereum blockchain. Among the EVM, there could be several functions in a contract. An ABI is necessary so that you can specify which function in the contract to invoke, as well as get a guarantee that the function will return data in the format you are expecting. read more
This library encodes function calls and decodes their output.
Documentation
Disclaimer
This library intends to support only valid ABIs generated by recent Solidity versions. Specifically, we don't intend to support ABIs that are invalid due to known Solidity bugs or by external libraries that don't strictly follow the specification.
Please make sure to pre-process your ABI in case it's not supported before using it with ethabi.
Installation
cargo install ethabi-cli

Usage
Ethereum ABI coder.
Copyright 2016-2017 Parity Technologies (UK) Limited
Usage:
ethabi encode function <abi-path> <function-name-or-signature> [-p <param>]... [-l | --lenient]
ethabi encode params [-v <type> <param>]... [-l | --lenient]
ethabi decode function <abi-path> <function-name-or-signature> <data>
ethabi decode params [-t <type>]... <data>
ethabi decode log <abi-path> <event-name-or-signature> [-l <topic>]... <data>
ethabi -h | --help
Options:
-h, --help Display this message and exit.
-l, --lenient Allow short representation of input params.
Commands:
encode Encode ABI call.
decode Decode ABI call result.
function Load function from json ABI file.
params Specify types of input params inline.
log Decode event log.

Examples
ethabi encode params -v bool 1

0000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode params -v bool 1 -v string gavofyork -v bool 0

00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000
--
ethabi encode params -v bool[] [1,0,false]

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
--
ethabi encode params -v '(string,bool,string)' '(test,1,cyborg)'

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000004746573740000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066379626f72670000000000000000000000000000000000000000000000000000
--
ethabi encode function examples/test.json foo -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json foo(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
6fae94120000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(string):(uint256) -p 1

[{
"type":"function",
"inputs": [{
"type":"string"
}],
"name":"foo",
"outputs": [{
"type": "uint256"
}]
}]
d473a8ed000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000013100000000000000000000000000000000000000000000000000000000000000
--
ethabi decode params -t bool 0000000000000000000000000000000000000000000000000000000000000001

bool true
--
ethabi decode params -t bool -t string -t bool 00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000

bool true

string gavofyork

bool false
--
ethabi decode params -t bool[] 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

bool[] [true,false,false]
--
ethabi decode params -t '(string,bool,string)' 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000673706972616c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000067175617361720000000000000000000000000000000000000000000000000000```

(string,bool,string) (spiral,true,quasar)
--
ethabi decode function ./examples/foo.json bar 0000000000000000000000000000000000000000000000000000000000000001

[{
"constant":false,
"inputs":[{
"name":"hello",
"type":"address"
}],
"name":"bar",
"outputs":[{
"name":"",
"type":"bool"
}],
"type":"function"
}]
bool true
--
ethabi decode log ./examples/event.json Event -l 0000000000000000000000000000000000000000000000000000000000000001 0000000000000000000000004444444444444444444444444444444444444444

a bool true

b address 4444444444444444444444444444444444444444
About
Encode and decode smart contract invocations
Resources
Readme
Apache-2.0 license
Security policy
Security policy
Activity
Custom properties
Stars
12 stars
Watchers
0 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
ethabi
The ABI, Application Binary Interface, is basically how you call functions in a contract and get data back.
An ABI determines such details as how functions are called and in which binary format information should be passed from one program component to the next...
An Ethereum smart contract is bytecode, EVM, on the Ethereum blockchain. Among the EVM, there could be several functions in a contract. An ABI is necessary so that you can specify which function in the contract to invoke, as well as get a guarantee that the function will return data in the format you are expecting. read more
This library encodes function calls and decodes their output.
Documentation
Disclaimer
This library intends to support only valid ABIs generated by recent Solidity versions. Specifically, we don't intend to support ABIs that are invalid due to known Solidity bugs or by external libraries that don't strictly follow the specification.
Please make sure to pre-process your ABI in case it's not supported before using it with ethabi.
Installation
cargo install ethabi-cli

Usage
Ethereum ABI coder.
Copyright 2016-2017 Parity Technologies (UK) Limited
Usage:
ethabi encode function <abi-path> <function-name-or-signature> [-p <param>]... [-l | --lenient]
ethabi encode params [-v <type> <param>]... [-l | --lenient]
ethabi decode function <abi-path> <function-name-or-signature> <data>
ethabi decode params [-t <type>]... <data>
ethabi decode log <abi-path> <event-name-or-signature> [-l <topic>]... <data>
ethabi -h | --help
Options:
-h, --help Display this message and exit.
-l, --lenient Allow short representation of input params.
Commands:
encode Encode ABI call.
decode Decode ABI call result.
function Load function from json ABI file.
params Specify types of input params inline.
log Decode event log.

Examples
ethabi encode params -v bool 1

0000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode params -v bool 1 -v string gavofyork -v bool 0

00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000
--
ethabi encode params -v bool[] [1,0,false]

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
--
ethabi encode params -v '(string,bool,string)' '(test,1,cyborg)'

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000004746573740000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066379626f72670000000000000000000000000000000000000000000000000000
--
ethabi encode function examples/test.json foo -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json foo(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
6fae94120000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(string):(uint256) -p 1

[{
"type":"function",
"inputs": [{
"type":"string"
}],
"name":"foo",
"outputs": [{
"type": "uint256"
}]
}]
d473a8ed000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000013100000000000000000000000000000000000000000000000000000000000000
--
ethabi decode params -t bool 0000000000000000000000000000000000000000000000000000000000000001

bool true
--
ethabi decode params -t bool -t string -t bool 00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000

bool true

string gavofyork

bool false
--
ethabi decode params -t bool[] 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

bool[] [true,false,false]
--
ethabi decode params -t '(string,bool,string)' 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000673706972616c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000067175617361720000000000000000000000000000000000000000000000000000```

(string,bool,string) (spiral,true,quasar)
--
ethabi decode function ./examples/foo.json bar 0000000000000000000000000000000000000000000000000000000000000001

[{
"constant":false,
"inputs":[{
"name":"hello",
"type":"address"
}],
"name":"bar",
"outputs":[{
"name":"",
"type":"bool"
}],
"type":"function"
}]
bool true
--
ethabi decode log ./examples/event.json Event -l 0000000000000000000000000000000000000000000000000000000000000001 0000000000000000000000004444444444444444444444444444444444444444

a bool true

b address 4444444444444444444444444444444444444444
About
Encode and decode smart contract invocations
Resources
Readme
Apache-2.0 license
Security policy
Security policy
Activity
Custom properties
Stars
12 stars
Watchers
0 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
ethabi
The ABI, Application Binary Interface, is basically how you call functions in a contract and get data back.
An ABI determines such details as how functions are called and in which binary format information should be passed from one program component to the next...
An Ethereum smart contract is bytecode, EVM, on the Ethereum blockchain. Among the EVM, there could be several functions in a contract. An ABI is necessary so that you can specify which function in the contract to invoke, as well as get a guarantee that the function will return data in the format you are expecting. read more
This library encodes function calls and decodes their output.
Documentation
Disclaimer
This library intends to support only valid ABIs generated by recent Solidity versions. Specifically, we don't intend to support ABIs that are invalid due to known Solidity bugs or by external libraries that don't strictly follow the specification.
Please make sure to pre-process your ABI in case it's not supported before using it with ethabi.
Installation
cargo install ethabi-cli

Usage
Ethereum ABI coder.
Copyright 2016-2017 Parity Technologies (UK) Limited
Usage:
ethabi encode function <abi-path> <function-name-or-signature> [-p <param>]... [-l | --lenient]
ethabi encode params [-v <type> <param>]... [-l | --lenient]
ethabi decode function <abi-path> <function-name-or-signature> <data>
ethabi decode params [-t <type>]... <data>
ethabi decode log <abi-path> <event-name-or-signature> [-l <topic>]... <data>
ethabi -h | --help
Options:
-h, --help Display this message and exit.
-l, --lenient Allow short representation of input params.
Commands:
encode Encode ABI call.
decode Decode ABI call result.
function Load function from json ABI file.
params Specify types of input params inline.
log Decode event log.

Examples
ethabi encode params -v bool 1

0000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode params -v bool 1 -v string gavofyork -v bool 0

00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000
--
ethabi encode params -v bool[] [1,0,false]

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
--
ethabi encode params -v '(string,bool,string)' '(test,1,cyborg)'

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000004746573740000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066379626f72670000000000000000000000000000000000000000000000000000
--
ethabi encode function examples/test.json foo -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json foo(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
6fae94120000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(string):(uint256) -p 1

[{
"type":"function",
"inputs": [{
"type":"string"
}],
"name":"foo",
"outputs": [{
"type": "uint256"
}]
}]
d473a8ed000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000013100000000000000000000000000000000000000000000000000000000000000
--
ethabi decode params -t bool 0000000000000000000000000000000000000000000000000000000000000001

bool true
--
ethabi decode params -t bool -t string -t bool 00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000

bool true

string gavofyork

bool false
--
ethabi decode params -t bool[] 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

bool[] [true,false,false]
--
ethabi decode params -t '(string,bool,string)' 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000673706972616c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000067175617361720000000000000000000000000000000000000000000000000000```

(string,bool,string) (spiral,true,quasar)
--
ethabi decode function ./examples/foo.json bar 0000000000000000000000000000000000000000000000000000000000000001

[{
"constant":false,
"inputs":[{
"name":"hello",
"type":"address"
}],
"name":"bar",
"outputs":[{
"name":"",
"type":"bool"
}],
"type":"function"
}]
bool true
--
ethabi decode log ./examples/event.json Event -l 0000000000000000000000000000000000000000000000000000000000000001 0000000000000000000000004444444444444444444444444444444444444444

a bool true

b address 4444444444444444444444444444444444444444
About
Encode and decode smart contract invocations
Resources
Readme
Apache-2.0 license
Security policy
Security policy
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12 stars
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0 watching
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2 forks
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Used by
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
ethabi
The ABI, Application Binary Interface, is basically how you call functions in a contract and get data back.
An ABI determines such details as how functions are called and in which binary format information should be passed from one program component to the next...
An Ethereum smart contract is bytecode, EVM, on the Ethereum blockchain. Among the EVM, there could be several functions in a contract. An ABI is necessary so that you can specify which function in the contract to invoke, as well as get a guarantee that the function will return data in the format you are expecting. read more
This library encodes function calls and decodes their output.
Documentation
Disclaimer
This library intends to support only valid ABIs generated by recent Solidity versions. Specifically, we don't intend to support ABIs that are invalid due to known Solidity bugs or by external libraries that don't strictly follow the specification.
Please make sure to pre-process your ABI in case it's not supported before using it with ethabi.
Installation
cargo install ethabi-cli

Usage
Ethereum ABI coder.
Copyright 2016-2017 Parity Technologies (UK) Limited
Usage:
ethabi encode function <abi-path> <function-name-or-signature> [-p <param>]... [-l | --lenient]
ethabi encode params [-v <type> <param>]... [-l | --lenient]
ethabi decode function <abi-path> <function-name-or-signature> <data>
ethabi decode params [-t <type>]... <data>
ethabi decode log <abi-path> <event-name-or-signature> [-l <topic>]... <data>
ethabi -h | --help
Options:
-h, --help Display this message and exit.
-l, --lenient Allow short representation of input params.
Commands:
encode Encode ABI call.
decode Decode ABI call result.
function Load function from json ABI file.
params Specify types of input params inline.
log Decode event log.

Examples
ethabi encode params -v bool 1

0000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode params -v bool 1 -v string gavofyork -v bool 0

00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000
--
ethabi encode params -v bool[] [1,0,false]

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
--
ethabi encode params -v '(string,bool,string)' '(test,1,cyborg)'

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000004746573740000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066379626f72670000000000000000000000000000000000000000000000000000
--
ethabi encode function examples/test.json foo -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json foo(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
6fae94120000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(string):(uint256) -p 1

[{
"type":"function",
"inputs": [{
"type":"string"
}],
"name":"foo",
"outputs": [{
"type": "uint256"
}]
}]
d473a8ed000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000013100000000000000000000000000000000000000000000000000000000000000
--
ethabi decode params -t bool 0000000000000000000000000000000000000000000000000000000000000001

bool true
--
ethabi decode params -t bool -t string -t bool 00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000

bool true

string gavofyork

bool false
--
ethabi decode params -t bool[] 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

bool[] [true,false,false]
--
ethabi decode params -t '(string,bool,string)' 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000673706972616c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000067175617361720000000000000000000000000000000000000000000000000000```

(string,bool,string) (spiral,true,quasar)
--
ethabi decode function ./examples/foo.json bar 0000000000000000000000000000000000000000000000000000000000000001

[{
"constant":false,
"inputs":[{
"name":"hello",
"type":"address"
}],
"name":"bar",
"outputs":[{
"name":"",
"type":"bool"
}],
"type":"function"
}]
bool true
--
ethabi decode log ./examples/event.json Event -l 0000000000000000000000000000000000000000000000000000000000000001 0000000000000000000000004444444444444444444444444444444444444444

a bool true

b address 4444444444444444444444444444444444444444
About
Encode and decode smart contract invocations
Resources
Readme
Apache-2.0 license
Security policy
Security policy
Activity
Custom properties
Stars
12 stars
Watchers
0 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
ethabi
The ABI, Application Binary Interface, is basically how you call functions in a contract and get data back.
An ABI determines such details as how functions are called and in which binary format information should be passed from one program component to the next...
An Ethereum smart contract is bytecode, EVM, on the Ethereum blockchain. Among the EVM, there could be several functions in a contract. An ABI is necessary so that you can specify which function in the contract to invoke, as well as get a guarantee that the function will return data in the format you are expecting. read more
This library encodes function calls and decodes their output.
Documentation
Disclaimer
This library intends to support only valid ABIs generated by recent Solidity versions. Specifically, we don't intend to support ABIs that are invalid due to known Solidity bugs or by external libraries that don't strictly follow the specification.
Please make sure to pre-process your ABI in case it's not supported before using it with ethabi.
Installation
cargo install ethabi-cli

Usage
Ethereum ABI coder.
Copyright 2016-2017 Parity Technologies (UK) Limited
Usage:
ethabi encode function <abi-path> <function-name-or-signature> [-p <param>]... [-l | --lenient]
ethabi encode params [-v <type> <param>]... [-l | --lenient]
ethabi decode function <abi-path> <function-name-or-signature> <data>
ethabi decode params [-t <type>]... <data>
ethabi decode log <abi-path> <event-name-or-signature> [-l <topic>]... <data>
ethabi -h | --help
Options:
-h, --help Display this message and exit.
-l, --lenient Allow short representation of input params.
Commands:
encode Encode ABI call.
decode Decode ABI call result.
function Load function from json ABI file.
params Specify types of input params inline.
log Decode event log.

Examples
ethabi encode params -v bool 1

0000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode params -v bool 1 -v string gavofyork -v bool 0

00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000
--
ethabi encode params -v bool[] [1,0,false]

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
--
ethabi encode params -v '(string,bool,string)' '(test,1,cyborg)'

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000004746573740000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066379626f72670000000000000000000000000000000000000000000000000000
--
ethabi encode function examples/test.json foo -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json foo(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
6fae94120000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(string):(uint256) -p 1

[{
"type":"function",
"inputs": [{
"type":"string"
}],
"name":"foo",
"outputs": [{
"type": "uint256"
}]
}]
d473a8ed000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000013100000000000000000000000000000000000000000000000000000000000000
--
ethabi decode params -t bool 0000000000000000000000000000000000000000000000000000000000000001

bool true
--
ethabi decode params -t bool -t string -t bool 00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000

bool true

string gavofyork

bool false
--
ethabi decode params -t bool[] 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

bool[] [true,false,false]
--
ethabi decode params -t '(string,bool,string)' 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000673706972616c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000067175617361720000000000000000000000000000000000000000000000000000```

(string,bool,string) (spiral,true,quasar)
--
ethabi decode function ./examples/foo.json bar 0000000000000000000000000000000000000000000000000000000000000001

[{
"constant":false,
"inputs":[{
"name":"hello",
"type":"address"
}],
"name":"bar",
"outputs":[{
"name":"",
"type":"bool"
}],
"type":"function"
}]
bool true
--
ethabi decode log ./examples/event.json Event -l 0000000000000000000000000000000000000000000000000000000000000001 0000000000000000000000004444444444444444444444444444444444444444

a bool true

b address 4444444444444444444444444444444444444444
About
Encode and decode smart contract invocations
Resources
Readme
Apache-2.0 license
Security policy
Security policy
Activity
Custom properties
Stars
12 stars
Watchers
0 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
ethabi
The ABI, Application Binary Interface, is basically how you call functions in a contract and get data back.
An ABI determines such details as how functions are called and in which binary format information should be passed from one program component to the next...
An Ethereum smart contract is bytecode, EVM, on the Ethereum blockchain. Among the EVM, there could be several functions in a contract. An ABI is necessary so that you can specify which function in the contract to invoke, as well as get a guarantee that the function will return data in the format you are expecting. read more
This library encodes function calls and decodes their output.
Documentation
Disclaimer
This library intends to support only valid ABIs generated by recent Solidity versions. Specifically, we don't intend to support ABIs that are invalid due to known Solidity bugs or by external libraries that don't strictly follow the specification.
Please make sure to pre-process your ABI in case it's not supported before using it with ethabi.
Installation
cargo install ethabi-cli

Usage
Ethereum ABI coder.
Copyright 2016-2017 Parity Technologies (UK) Limited
Usage:
ethabi encode function <abi-path> <function-name-or-signature> [-p <param>]... [-l | --lenient]
ethabi encode params [-v <type> <param>]... [-l | --lenient]
ethabi decode function <abi-path> <function-name-or-signature> <data>
ethabi decode params [-t <type>]... <data>
ethabi decode log <abi-path> <event-name-or-signature> [-l <topic>]... <data>
ethabi -h | --help
Options:
-h, --help Display this message and exit.
-l, --lenient Allow short representation of input params.
Commands:
encode Encode ABI call.
decode Decode ABI call result.
function Load function from json ABI file.
params Specify types of input params inline.
log Decode event log.

Examples
ethabi encode params -v bool 1

0000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode params -v bool 1 -v string gavofyork -v bool 0

00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000
--
ethabi encode params -v bool[] [1,0,false]

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
--
ethabi encode params -v '(string,bool,string)' '(test,1,cyborg)'

00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000004746573740000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000066379626f72670000000000000000000000000000000000000000000000000000
--
ethabi encode function examples/test.json foo -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json foo(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
455575780000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(bool) -p 1

[{
"type":"function",
"inputs": [{
"name":"a",
"type":"bool"
}],
"name":"foo",
"outputs": []
}]
6fae94120000000000000000000000000000000000000000000000000000000000000001
--
ethabi encode function examples/test.json bar(string):(uint256) -p 1

[{
"type":"function",
"inputs": [{
"type":"string"
}],
"name":"foo",
"outputs": [{
"type": "uint256"
}]
}]
d473a8ed000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000013100000000000000000000000000000000000000000000000000000000000000
--
ethabi decode params -t bool 0000000000000000000000000000000000000000000000000000000000000001

bool true
--
ethabi decode params -t bool -t string -t bool 00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000096761766f66796f726b0000000000000000000000000000000000000000000000

bool true

string gavofyork

bool false
--
ethabi decode params -t bool[] 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

bool[] [true,false,false]
--
ethabi decode params -t '(string,bool,string)' 00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000673706972616c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000067175617361720000000000000000000000000000000000000000000000000000```

(string,bool,string) (spiral,true,quasar)
--
ethabi decode function ./examples/foo.json bar 0000000000000000000000000000000000000000000000000000000000000001

[{
"constant":false,
"inputs":[{
"name":"hello",
"type":"address"
}],
"name":"bar",
"outputs":[{
"name":"",
"type":"bool"
}],
"type":"function"
}]
bool true
--
ethabi decode log ./examples/event.json Event -l 0000000000000000000000000000000000000000000000000000000000000001 0000000000000000000000004444444444444444444444444444444444444444

a bool true

b address 4444444444444444444444444444444444444444
About
Encode and decode smart contract invocations
Resources
Readme
Apache-2.0 license
Security policy
Security policy
Activity
Custom properties
Stars
12 stars
Watchers
0 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages