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Repository files navigation

Arcade

LicenseCIPyPIPython Version

Arcade MCP

Open-source Python framework for building MCP servers and tools.

Documentation • Examples • Discord

What is arcade-mcp

arcade-mcp is the Python framework for building Model Context Protocol servers and the tools that run inside them. It powers the 7,500+ prebuilt tools across 81 MCP servers at Arcade.dev, and is open-sourced so you can build your own.

Use it when you need MCP tools that aren't already in the prebuilt catalog: internal APIs, custom OAuth providers, domain-specific integrations.

Highlights:

  • Decorator API covering the full MCP spec: tools, resources, prompts, sampling, elicitation, progress, logging.
  • Authorized tool calling. Declare requires_auth=GitHub(scopes=["repo"]) and Arcade handles OAuth, token refresh, and per-call scoping. The client and the LLM never see the token.
  • Vendor-neutral. Any MCP client, any LLM, any agent framework (LangChain, Mastra, Pydantic AI, CrewAI, Google ADK, OpenAI Agents).
  • arcade evals for testing tool-call accuracy against real LLMs.
  • arcade deploy for one-command hosting on Arcade Cloud.

Authorized tool calling

Tools can declare:

  1. Which OAuth scopes they need, and Arcade handles the rest: prompting the end user to authorize, storing and refreshing tokens, scoping them per call
  2. API keys or any other secrets, and Arcade hosts the secrets securely in an encrypted environment.

The secrets (OAuth tokens, API keys, etc) are securely injected by Arcade into your tool call at runtime, so that your tool can authorize requests to upstream APIs, for example. The client and the LLM never see the secret values.

A tool that reads the user's GitHub repos is one decorator away:

fromarcade_mcp_serverimportMCPApp, Contextfromarcade_mcp_server.authimportGitHubapp=MCPApp(name="gh", version="1.0.0")
@app.tool(requires_auth=GitHub(scopes=["repo"]))asyncdeflist_my_repos(context: Context) ->list[str]:
"""List the authenticated user's GitHub repositories."""token=context.get_auth_token_or_empty()
...

When the tool is invoked through Arcade Cloud, the user is presented with a URL to complete the OAuth challenge in their browser. On success, the token is injected into context for that call. Subsequent calls reuse and refresh the token automatically.

22 helper classes ship with the framework for popular providers:

Asana, Atlassian, Attio, ClickUp, Discord, Dropbox, Figma, GitHub, Google, Hubspot, Linear, LinkedIn, Microsoft, Notion, PagerDuty, Reddit, Slack, Spotify, Twitch, X, Zoom.

For any other OAuth API, use the generic OAuth2(...) class and register your OAuth app in the Arcade Dashboard.

Quick Start

Install the CLI

uv tool install arcade-mcp

Scaffold a new server

arcade new my_server
cd my_server/src/my_server

The scaffold creates pyproject.toml, .env.example, and a server.py with example tools.

A minimal tool:

fromtypingimportAnnotatedfromarcade_mcp_serverimportMCPAppapp=MCPApp(name="my_server", version="1.0.0")
@app.tooldefgreet(name: Annotated[str, "Name to greet"]) ->str:
"""Greet a person by name."""returnf"Hello, {name}!"if__name__=="__main__":
app.run(transport="stdio")

Run

uv run server.py # stdio (default), for Claude Desktop and CLI tools
uv run server.py http # HTTP+SSE, for Cursor and VS Code; docs at http://127.0.0.1:8000/docs

Configure your MCP client

arcade configure claude # Claude Desktop, stdio
arcade configure cursor --transport http --port 8080 # Cursor, local HTTP on :8080
arcade configure vscode --entrypoint my_server.py # VS Code, stdio launching my_server.py

For more patterns (MCP resources, sampling, progress reporting, tool chaining, end-to-end agents, eval suites, Resource Server Auth), browse examples/mcp_servers/. Run arcade --help for the full CLI.

With Arcade Cloud

arcade login followed by arcade deploy packages your server, discovers and upserts required secrets, and polls until it's healthy on Arcade Cloud. From there, the Arcade Engine fulfills authorized tool calling flows for end users, and arcade server logs/list/status plus arcade dashboard provide observability and management.

Standalone is supported too. Run your server in any MCP client over stdio or HTTP. Supply your own access tokens for tools with requires_auth=..., and protect production HTTP endpoints with Resource Server Auth (OAuth 2.1 Bearer tokens validated against your IdP).

Install from Source

Requires Python 3.10+ and uv.

git clone https://github.com/ArcadeAI/arcade-mcp.git
cd arcade-mcp
make install

See CONTRIBUTING.md for development workflow and SECURITY.md for vulnerability reporting.

Community

License

MIT. See LICENSE.

About

MCP Server Framework and Tool Development library for building custom capabilities into agents.

docs.arcade.dev

Topics

aiarcadearcade-aiclaudeclaude-codeclaude-mcpmcpmcp-frameworkmcp-gatewaymcp-runtimemcp-servermcp-serversmcp-toolsmcpservermodel-context-protocolmodel-context-protocol-sdkpython

Resources

Readme
MIT license

Contributing

Contributing

Security policy

Security policy
Activity
Custom properties

Stars

1.0k stars

Watchers

7 watching

Forks

113 forks
Report repository

Used by

Contributors

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
Arcade
LicenseCIPyPIPython Version
Arcade MCP
Open-source Python framework for building MCP servers and tools.
Documentation • Examples • Discord
What is arcade-mcp
arcade-mcp is the Python framework for building Model Context Protocol servers and the tools that run inside them. It powers the 7,500+ prebuilt tools across 81 MCP servers at Arcade.dev, and is open-sourced so you can build your own.
Use it when you need MCP tools that aren't already in the prebuilt catalog: internal APIs, custom OAuth providers, domain-specific integrations.
Highlights:
  • Decorator API covering the full MCP spec: tools, resources, prompts, sampling, elicitation, progress, logging.
  • Authorized tool calling. Declare requires_auth=GitHub(scopes=["repo"]) and Arcade handles OAuth, token refresh, and per-call scoping. The client and the LLM never see the token.
  • Vendor-neutral. Any MCP client, any LLM, any agent framework (LangChain, Mastra, Pydantic AI, CrewAI, Google ADK, OpenAI Agents).
  • arcade evals for testing tool-call accuracy against real LLMs.
  • arcade deploy for one-command hosting on Arcade Cloud.
Authorized tool calling
Tools can declare:
  1. Which OAuth scopes they need, and Arcade handles the rest: prompting the end user to authorize, storing and refreshing tokens, scoping them per call
  2. API keys or any other secrets, and Arcade hosts the secrets securely in an encrypted environment.
The secrets (OAuth tokens, API keys, etc) are securely injected by Arcade into your tool call at runtime, so that your tool can authorize requests to upstream APIs, for example. The client and the LLM never see the secret values.
A tool that reads the user's GitHub repos is one decorator away:
fromarcade_mcp_serverimportMCPApp, Contextfromarcade_mcp_server.authimportGitHubapp=MCPApp(name="gh", version="1.0.0")
@app.tool(requires_auth=GitHub(scopes=["repo"]))asyncdeflist_my_repos(context: Context) ->list[str]:
"""List the authenticated user's GitHub repositories."""token=context.get_auth_token_or_empty()
...
When the tool is invoked through Arcade Cloud, the user is presented with a URL to complete the OAuth challenge in their browser. On success, the token is injected into context for that call. Subsequent calls reuse and refresh the token automatically.
22 helper classes ship with the framework for popular providers:
Asana, Atlassian, Attio, ClickUp, Discord, Dropbox, Figma, GitHub, Google, Hubspot, Linear, LinkedIn, Microsoft, Notion, PagerDuty, Reddit, Slack, Spotify, Twitch, X, Zoom.
For any other OAuth API, use the generic OAuth2(...) class and register your OAuth app in the Arcade Dashboard.
Quick Start
Install the CLI
uv tool install arcade-mcp
Scaffold a new server
arcade new my_server
cd my_server/src/my_server
The scaffold creates pyproject.toml, .env.example, and a server.py with example tools.
A minimal tool:
fromtypingimportAnnotatedfromarcade_mcp_serverimportMCPAppapp=MCPApp(name="my_server", version="1.0.0")
@app.tooldefgreet(name: Annotated[str, "Name to greet"]) ->str:
"""Greet a person by name."""returnf"Hello, {name}!"if__name__=="__main__":
app.run(transport="stdio")
Run
uv run server.py # stdio (default), for Claude Desktop and CLI tools
uv run server.py http # HTTP+SSE, for Cursor and VS Code; docs at http://127.0.0.1:8000/docs
Configure your MCP client
arcade configure claude # Claude Desktop, stdio
arcade configure cursor --transport http --port 8080 # Cursor, local HTTP on :8080
arcade configure vscode --entrypoint my_server.py # VS Code, stdio launching my_server.py
For more patterns (MCP resources, sampling, progress reporting, tool chaining, end-to-end agents, eval suites, Resource Server Auth), browse examples/mcp_servers/. Run arcade --help for the full CLI.
With Arcade Cloud
arcade login followed by arcade deploy packages your server, discovers and upserts required secrets, and polls until it's healthy on Arcade Cloud. From there, the Arcade Engine fulfills authorized tool calling flows for end users, and arcade server logs/list/status plus arcade dashboard provide observability and management.
Standalone is supported too. Run your server in any MCP client over stdio or HTTP. Supply your own access tokens for tools with requires_auth=..., and protect production HTTP endpoints with Resource Server Auth (OAuth 2.1 Bearer tokens validated against your IdP).
Install from Source
Requires Python 3.10+ and uv.
git clone https://github.com/ArcadeAI/arcade-mcp.git
cd arcade-mcp
make install
See CONTRIBUTING.md for development workflow and SECURITY.md for vulnerability reporting.
Community
License
MIT. See LICENSE.
About
MCP Server Framework and Tool Development library for building custom capabilities into agents. 
docs.arcade.dev
Topics
aiarcadearcade-aiclaudeclaude-codeclaude-mcpmcpmcp-frameworkmcp-gatewaymcp-runtimemcp-servermcp-serversmcp-toolsmcpservermodel-context-protocolmodel-context-protocol-sdkpython
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
1.0k stars
Watchers
7 watching
Forks
113 forks
Report repository
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
Arcade
LicenseCIPyPIPython Version
Arcade MCP
Open-source Python framework for building MCP servers and tools.
Documentation • Examples • Discord
What is arcade-mcp
arcade-mcp is the Python framework for building Model Context Protocol servers and the tools that run inside them. It powers the 7,500+ prebuilt tools across 81 MCP servers at Arcade.dev, and is open-sourced so you can build your own.
Use it when you need MCP tools that aren't already in the prebuilt catalog: internal APIs, custom OAuth providers, domain-specific integrations.
Highlights:
  • Decorator API covering the full MCP spec: tools, resources, prompts, sampling, elicitation, progress, logging.
  • Authorized tool calling. Declare requires_auth=GitHub(scopes=["repo"]) and Arcade handles OAuth, token refresh, and per-call scoping. The client and the LLM never see the token.
  • Vendor-neutral. Any MCP client, any LLM, any agent framework (LangChain, Mastra, Pydantic AI, CrewAI, Google ADK, OpenAI Agents).
  • arcade evals for testing tool-call accuracy against real LLMs.
  • arcade deploy for one-command hosting on Arcade Cloud.
Authorized tool calling
Tools can declare:
  1. Which OAuth scopes they need, and Arcade handles the rest: prompting the end user to authorize, storing and refreshing tokens, scoping them per call
  2. API keys or any other secrets, and Arcade hosts the secrets securely in an encrypted environment.
The secrets (OAuth tokens, API keys, etc) are securely injected by Arcade into your tool call at runtime, so that your tool can authorize requests to upstream APIs, for example. The client and the LLM never see the secret values.
A tool that reads the user's GitHub repos is one decorator away:
fromarcade_mcp_serverimportMCPApp, Contextfromarcade_mcp_server.authimportGitHubapp=MCPApp(name="gh", version="1.0.0")
@app.tool(requires_auth=GitHub(scopes=["repo"]))asyncdeflist_my_repos(context: Context) ->list[str]:
"""List the authenticated user's GitHub repositories."""token=context.get_auth_token_or_empty()
...
When the tool is invoked through Arcade Cloud, the user is presented with a URL to complete the OAuth challenge in their browser. On success, the token is injected into context for that call. Subsequent calls reuse and refresh the token automatically.
22 helper classes ship with the framework for popular providers:
Asana, Atlassian, Attio, ClickUp, Discord, Dropbox, Figma, GitHub, Google, Hubspot, Linear, LinkedIn, Microsoft, Notion, PagerDuty, Reddit, Slack, Spotify, Twitch, X, Zoom.
For any other OAuth API, use the generic OAuth2(...) class and register your OAuth app in the Arcade Dashboard.
Quick Start
Install the CLI
uv tool install arcade-mcp
Scaffold a new server
arcade new my_server
cd my_server/src/my_server
The scaffold creates pyproject.toml, .env.example, and a server.py with example tools.
A minimal tool:
fromtypingimportAnnotatedfromarcade_mcp_serverimportMCPAppapp=MCPApp(name="my_server", version="1.0.0")
@app.tooldefgreet(name: Annotated[str, "Name to greet"]) ->str:
"""Greet a person by name."""returnf"Hello, {name}!"if__name__=="__main__":
app.run(transport="stdio")
Run
uv run server.py # stdio (default), for Claude Desktop and CLI tools
uv run server.py http # HTTP+SSE, for Cursor and VS Code; docs at http://127.0.0.1:8000/docs
Configure your MCP client
arcade configure claude # Claude Desktop, stdio
arcade configure cursor --transport http --port 8080 # Cursor, local HTTP on :8080
arcade configure vscode --entrypoint my_server.py # VS Code, stdio launching my_server.py
For more patterns (MCP resources, sampling, progress reporting, tool chaining, end-to-end agents, eval suites, Resource Server Auth), browse examples/mcp_servers/. Run arcade --help for the full CLI.
With Arcade Cloud
arcade login followed by arcade deploy packages your server, discovers and upserts required secrets, and polls until it's healthy on Arcade Cloud. From there, the Arcade Engine fulfills authorized tool calling flows for end users, and arcade server logs/list/status plus arcade dashboard provide observability and management.
Standalone is supported too. Run your server in any MCP client over stdio or HTTP. Supply your own access tokens for tools with requires_auth=..., and protect production HTTP endpoints with Resource Server Auth (OAuth 2.1 Bearer tokens validated against your IdP).
Install from Source
Requires Python 3.10+ and uv.
git clone https://github.com/ArcadeAI/arcade-mcp.git
cd arcade-mcp
make install
See CONTRIBUTING.md for development workflow and SECURITY.md for vulnerability reporting.
Community
License
MIT. See LICENSE.
About
MCP Server Framework and Tool Development library for building custom capabilities into agents. 
docs.arcade.dev
Topics
aiarcadearcade-aiclaudeclaude-codeclaude-mcpmcpmcp-frameworkmcp-gatewaymcp-runtimemcp-servermcp-serversmcp-toolsmcpservermodel-context-protocolmodel-context-protocol-sdkpython
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
1.0k stars
Watchers
7 watching
Forks
113 forks
Report repository
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
Arcade
LicenseCIPyPIPython Version
Arcade MCP
Open-source Python framework for building MCP servers and tools.
Documentation • Examples • Discord
What is arcade-mcp
arcade-mcp is the Python framework for building Model Context Protocol servers and the tools that run inside them. It powers the 7,500+ prebuilt tools across 81 MCP servers at Arcade.dev, and is open-sourced so you can build your own.
Use it when you need MCP tools that aren't already in the prebuilt catalog: internal APIs, custom OAuth providers, domain-specific integrations.
Highlights:
  • Decorator API covering the full MCP spec: tools, resources, prompts, sampling, elicitation, progress, logging.
  • Authorized tool calling. Declare requires_auth=GitHub(scopes=["repo"]) and Arcade handles OAuth, token refresh, and per-call scoping. The client and the LLM never see the token.
  • Vendor-neutral. Any MCP client, any LLM, any agent framework (LangChain, Mastra, Pydantic AI, CrewAI, Google ADK, OpenAI Agents).
  • arcade evals for testing tool-call accuracy against real LLMs.
  • arcade deploy for one-command hosting on Arcade Cloud.
Authorized tool calling
Tools can declare:
  1. Which OAuth scopes they need, and Arcade handles the rest: prompting the end user to authorize, storing and refreshing tokens, scoping them per call
  2. API keys or any other secrets, and Arcade hosts the secrets securely in an encrypted environment.
The secrets (OAuth tokens, API keys, etc) are securely injected by Arcade into your tool call at runtime, so that your tool can authorize requests to upstream APIs, for example. The client and the LLM never see the secret values.
A tool that reads the user's GitHub repos is one decorator away:
fromarcade_mcp_serverimportMCPApp, Contextfromarcade_mcp_server.authimportGitHubapp=MCPApp(name="gh", version="1.0.0")
@app.tool(requires_auth=GitHub(scopes=["repo"]))asyncdeflist_my_repos(context: Context) ->list[str]:
"""List the authenticated user's GitHub repositories."""token=context.get_auth_token_or_empty()
...
When the tool is invoked through Arcade Cloud, the user is presented with a URL to complete the OAuth challenge in their browser. On success, the token is injected into context for that call. Subsequent calls reuse and refresh the token automatically.
22 helper classes ship with the framework for popular providers:
Asana, Atlassian, Attio, ClickUp, Discord, Dropbox, Figma, GitHub, Google, Hubspot, Linear, LinkedIn, Microsoft, Notion, PagerDuty, Reddit, Slack, Spotify, Twitch, X, Zoom.
For any other OAuth API, use the generic OAuth2(...) class and register your OAuth app in the Arcade Dashboard.
Quick Start
Install the CLI
uv tool install arcade-mcp
Scaffold a new server
arcade new my_server
cd my_server/src/my_server
The scaffold creates pyproject.toml, .env.example, and a server.py with example tools.
A minimal tool:
fromtypingimportAnnotatedfromarcade_mcp_serverimportMCPAppapp=MCPApp(name="my_server", version="1.0.0")
@app.tooldefgreet(name: Annotated[str, "Name to greet"]) ->str:
"""Greet a person by name."""returnf"Hello, {name}!"if__name__=="__main__":
app.run(transport="stdio")
Run
uv run server.py # stdio (default), for Claude Desktop and CLI tools
uv run server.py http # HTTP+SSE, for Cursor and VS Code; docs at http://127.0.0.1:8000/docs
Configure your MCP client
arcade configure claude # Claude Desktop, stdio
arcade configure cursor --transport http --port 8080 # Cursor, local HTTP on :8080
arcade configure vscode --entrypoint my_server.py # VS Code, stdio launching my_server.py
For more patterns (MCP resources, sampling, progress reporting, tool chaining, end-to-end agents, eval suites, Resource Server Auth), browse examples/mcp_servers/. Run arcade --help for the full CLI.
With Arcade Cloud
arcade login followed by arcade deploy packages your server, discovers and upserts required secrets, and polls until it's healthy on Arcade Cloud. From there, the Arcade Engine fulfills authorized tool calling flows for end users, and arcade server logs/list/status plus arcade dashboard provide observability and management.
Standalone is supported too. Run your server in any MCP client over stdio or HTTP. Supply your own access tokens for tools with requires_auth=..., and protect production HTTP endpoints with Resource Server Auth (OAuth 2.1 Bearer tokens validated against your IdP).
Install from Source
Requires Python 3.10+ and uv.
git clone https://github.com/ArcadeAI/arcade-mcp.git
cd arcade-mcp
make install
See CONTRIBUTING.md for development workflow and SECURITY.md for vulnerability reporting.
Community
License
MIT. See LICENSE.
About
MCP Server Framework and Tool Development library for building custom capabilities into agents. 
docs.arcade.dev
Topics
aiarcadearcade-aiclaudeclaude-codeclaude-mcpmcpmcp-frameworkmcp-gatewaymcp-runtimemcp-servermcp-serversmcp-toolsmcpservermodel-context-protocolmodel-context-protocol-sdkpython
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
1.0k stars
Watchers
7 watching
Forks
113 forks
Report repository
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
Arcade
LicenseCIPyPIPython Version
Arcade MCP
Open-source Python framework for building MCP servers and tools.
Documentation • Examples • Discord
What is arcade-mcp
arcade-mcp is the Python framework for building Model Context Protocol servers and the tools that run inside them. It powers the 7,500+ prebuilt tools across 81 MCP servers at Arcade.dev, and is open-sourced so you can build your own.
Use it when you need MCP tools that aren't already in the prebuilt catalog: internal APIs, custom OAuth providers, domain-specific integrations.
Highlights:
  • Decorator API covering the full MCP spec: tools, resources, prompts, sampling, elicitation, progress, logging.
  • Authorized tool calling. Declare requires_auth=GitHub(scopes=["repo"]) and Arcade handles OAuth, token refresh, and per-call scoping. The client and the LLM never see the token.
  • Vendor-neutral. Any MCP client, any LLM, any agent framework (LangChain, Mastra, Pydantic AI, CrewAI, Google ADK, OpenAI Agents).
  • arcade evals for testing tool-call accuracy against real LLMs.
  • arcade deploy for one-command hosting on Arcade Cloud.
Authorized tool calling
Tools can declare:
  1. Which OAuth scopes they need, and Arcade handles the rest: prompting the end user to authorize, storing and refreshing tokens, scoping them per call
  2. API keys or any other secrets, and Arcade hosts the secrets securely in an encrypted environment.
The secrets (OAuth tokens, API keys, etc) are securely injected by Arcade into your tool call at runtime, so that your tool can authorize requests to upstream APIs, for example. The client and the LLM never see the secret values.
A tool that reads the user's GitHub repos is one decorator away:
fromarcade_mcp_serverimportMCPApp, Contextfromarcade_mcp_server.authimportGitHubapp=MCPApp(name="gh", version="1.0.0")
@app.tool(requires_auth=GitHub(scopes=["repo"]))asyncdeflist_my_repos(context: Context) ->list[str]:
"""List the authenticated user's GitHub repositories."""token=context.get_auth_token_or_empty()
...
When the tool is invoked through Arcade Cloud, the user is presented with a URL to complete the OAuth challenge in their browser. On success, the token is injected into context for that call. Subsequent calls reuse and refresh the token automatically.
22 helper classes ship with the framework for popular providers:
Asana, Atlassian, Attio, ClickUp, Discord, Dropbox, Figma, GitHub, Google, Hubspot, Linear, LinkedIn, Microsoft, Notion, PagerDuty, Reddit, Slack, Spotify, Twitch, X, Zoom.
For any other OAuth API, use the generic OAuth2(...) class and register your OAuth app in the Arcade Dashboard.
Quick Start
Install the CLI
uv tool install arcade-mcp
Scaffold a new server
arcade new my_server
cd my_server/src/my_server
The scaffold creates pyproject.toml, .env.example, and a server.py with example tools.
A minimal tool:
fromtypingimportAnnotatedfromarcade_mcp_serverimportMCPAppapp=MCPApp(name="my_server", version="1.0.0")
@app.tooldefgreet(name: Annotated[str, "Name to greet"]) ->str:
"""Greet a person by name."""returnf"Hello, {name}!"if__name__=="__main__":
app.run(transport="stdio")
Run
uv run server.py # stdio (default), for Claude Desktop and CLI tools
uv run server.py http # HTTP+SSE, for Cursor and VS Code; docs at http://127.0.0.1:8000/docs
Configure your MCP client
arcade configure claude # Claude Desktop, stdio
arcade configure cursor --transport http --port 8080 # Cursor, local HTTP on :8080
arcade configure vscode --entrypoint my_server.py # VS Code, stdio launching my_server.py
For more patterns (MCP resources, sampling, progress reporting, tool chaining, end-to-end agents, eval suites, Resource Server Auth), browse examples/mcp_servers/. Run arcade --help for the full CLI.
With Arcade Cloud
arcade login followed by arcade deploy packages your server, discovers and upserts required secrets, and polls until it's healthy on Arcade Cloud. From there, the Arcade Engine fulfills authorized tool calling flows for end users, and arcade server logs/list/status plus arcade dashboard provide observability and management.
Standalone is supported too. Run your server in any MCP client over stdio or HTTP. Supply your own access tokens for tools with requires_auth=..., and protect production HTTP endpoints with Resource Server Auth (OAuth 2.1 Bearer tokens validated against your IdP).
Install from Source
Requires Python 3.10+ and uv.
git clone https://github.com/ArcadeAI/arcade-mcp.git
cd arcade-mcp
make install
See CONTRIBUTING.md for development workflow and SECURITY.md for vulnerability reporting.
Community
License
MIT. See LICENSE.
About
MCP Server Framework and Tool Development library for building custom capabilities into agents. 
docs.arcade.dev
Topics
aiarcadearcade-aiclaudeclaude-codeclaude-mcpmcpmcp-frameworkmcp-gatewaymcp-runtimemcp-servermcp-serversmcp-toolsmcpservermodel-context-protocolmodel-context-protocol-sdkpython
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
1.0k stars
Watchers
7 watching
Forks
113 forks
Report repository
Used by
Contributors
Languages

, '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
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Arcade
LicenseCIPyPIPython Version
Arcade MCP
Open-source Python framework for building MCP servers and tools.
Documentation • Examples • Discord
What is arcade-mcp
arcade-mcp is the Python framework for building Model Context Protocol servers and the tools that run inside them. It powers the 7,500+ prebuilt tools across 81 MCP servers at Arcade.dev, and is open-sourced so you can build your own.
Use it when you need MCP tools that aren't already in the prebuilt catalog: internal APIs, custom OAuth providers, domain-specific integrations.
Highlights:
  • Decorator API covering the full MCP spec: tools, resources, prompts, sampling, elicitation, progress, logging.
  • Authorized tool calling. Declare requires_auth=GitHub(scopes=["repo"]) and Arcade handles OAuth, token refresh, and per-call scoping. The client and the LLM never see the token.
  • Vendor-neutral. Any MCP client, any LLM, any agent framework (LangChain, Mastra, Pydantic AI, CrewAI, Google ADK, OpenAI Agents).
  • arcade evals for testing tool-call accuracy against real LLMs.
  • arcade deploy for one-command hosting on Arcade Cloud.
Authorized tool calling
Tools can declare:
  1. Which OAuth scopes they need, and Arcade handles the rest: prompting the end user to authorize, storing and refreshing tokens, scoping them per call
  2. API keys or any other secrets, and Arcade hosts the secrets securely in an encrypted environment.
The secrets (OAuth tokens, API keys, etc) are securely injected by Arcade into your tool call at runtime, so that your tool can authorize requests to upstream APIs, for example. The client and the LLM never see the secret values.
A tool that reads the user's GitHub repos is one decorator away:
fromarcade_mcp_serverimportMCPApp, Contextfromarcade_mcp_server.authimportGitHubapp=MCPApp(name="gh", version="1.0.0")
@app.tool(requires_auth=GitHub(scopes=["repo"]))asyncdeflist_my_repos(context: Context) ->list[str]:
"""List the authenticated user's GitHub repositories."""token=context.get_auth_token_or_empty()
...
When the tool is invoked through Arcade Cloud, the user is presented with a URL to complete the OAuth challenge in their browser. On success, the token is injected into context for that call. Subsequent calls reuse and refresh the token automatically.
22 helper classes ship with the framework for popular providers:
Asana, Atlassian, Attio, ClickUp, Discord, Dropbox, Figma, GitHub, Google, Hubspot, Linear, LinkedIn, Microsoft, Notion, PagerDuty, Reddit, Slack, Spotify, Twitch, X, Zoom.
For any other OAuth API, use the generic OAuth2(...) class and register your OAuth app in the Arcade Dashboard.
Quick Start
Install the CLI
uv tool install arcade-mcp
Scaffold a new server
arcade new my_server
cd my_server/src/my_server
The scaffold creates pyproject.toml, .env.example, and a server.py with example tools.
A minimal tool:
fromtypingimportAnnotatedfromarcade_mcp_serverimportMCPAppapp=MCPApp(name="my_server", version="1.0.0")
@app.tooldefgreet(name: Annotated[str, "Name to greet"]) ->str:
"""Greet a person by name."""returnf"Hello, {name}!"if__name__=="__main__":
app.run(transport="stdio")
Run
uv run server.py # stdio (default), for Claude Desktop and CLI tools
uv run server.py http # HTTP+SSE, for Cursor and VS Code; docs at http://127.0.0.1:8000/docs
Configure your MCP client
arcade configure claude # Claude Desktop, stdio
arcade configure cursor --transport http --port 8080 # Cursor, local HTTP on :8080
arcade configure vscode --entrypoint my_server.py # VS Code, stdio launching my_server.py
For more patterns (MCP resources, sampling, progress reporting, tool chaining, end-to-end agents, eval suites, Resource Server Auth), browse examples/mcp_servers/. Run arcade --help for the full CLI.
With Arcade Cloud
arcade login followed by arcade deploy packages your server, discovers and upserts required secrets, and polls until it's healthy on Arcade Cloud. From there, the Arcade Engine fulfills authorized tool calling flows for end users, and arcade server logs/list/status plus arcade dashboard provide observability and management.
Standalone is supported too. Run your server in any MCP client over stdio or HTTP. Supply your own access tokens for tools with requires_auth=..., and protect production HTTP endpoints with Resource Server Auth (OAuth 2.1 Bearer tokens validated against your IdP).
Install from Source
Requires Python 3.10+ and uv.
git clone https://github.com/ArcadeAI/arcade-mcp.git
cd arcade-mcp
make install
See CONTRIBUTING.md for development workflow and SECURITY.md for vulnerability reporting.
Community
License
MIT. See LICENSE.
About
MCP Server Framework and Tool Development library for building custom capabilities into agents. 
docs.arcade.dev
Topics
aiarcadearcade-aiclaudeclaude-codeclaude-mcpmcpmcp-frameworkmcp-gatewaymcp-runtimemcp-servermcp-serversmcp-toolsmcpservermodel-context-protocolmodel-context-protocol-sdkpython
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
1.0k stars
Watchers
7 watching
Forks
113 forks
Report repository
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
Arcade
LicenseCIPyPIPython Version
Arcade MCP
Open-source Python framework for building MCP servers and tools.
Documentation • Examples • Discord
What is arcade-mcp
arcade-mcp is the Python framework for building Model Context Protocol servers and the tools that run inside them. It powers the 7,500+ prebuilt tools across 81 MCP servers at Arcade.dev, and is open-sourced so you can build your own.
Use it when you need MCP tools that aren't already in the prebuilt catalog: internal APIs, custom OAuth providers, domain-specific integrations.
Highlights:
  • Decorator API covering the full MCP spec: tools, resources, prompts, sampling, elicitation, progress, logging.
  • Authorized tool calling. Declare requires_auth=GitHub(scopes=["repo"]) and Arcade handles OAuth, token refresh, and per-call scoping. The client and the LLM never see the token.
  • Vendor-neutral. Any MCP client, any LLM, any agent framework (LangChain, Mastra, Pydantic AI, CrewAI, Google ADK, OpenAI Agents).
  • arcade evals for testing tool-call accuracy against real LLMs.
  • arcade deploy for one-command hosting on Arcade Cloud.
Authorized tool calling
Tools can declare:
  1. Which OAuth scopes they need, and Arcade handles the rest: prompting the end user to authorize, storing and refreshing tokens, scoping them per call
  2. API keys or any other secrets, and Arcade hosts the secrets securely in an encrypted environment.
The secrets (OAuth tokens, API keys, etc) are securely injected by Arcade into your tool call at runtime, so that your tool can authorize requests to upstream APIs, for example. The client and the LLM never see the secret values.
A tool that reads the user's GitHub repos is one decorator away:
fromarcade_mcp_serverimportMCPApp, Contextfromarcade_mcp_server.authimportGitHubapp=MCPApp(name="gh", version="1.0.0")
@app.tool(requires_auth=GitHub(scopes=["repo"]))asyncdeflist_my_repos(context: Context) ->list[str]:
"""List the authenticated user's GitHub repositories."""token=context.get_auth_token_or_empty()
...
When the tool is invoked through Arcade Cloud, the user is presented with a URL to complete the OAuth challenge in their browser. On success, the token is injected into context for that call. Subsequent calls reuse and refresh the token automatically.
22 helper classes ship with the framework for popular providers:
Asana, Atlassian, Attio, ClickUp, Discord, Dropbox, Figma, GitHub, Google, Hubspot, Linear, LinkedIn, Microsoft, Notion, PagerDuty, Reddit, Slack, Spotify, Twitch, X, Zoom.
For any other OAuth API, use the generic OAuth2(...) class and register your OAuth app in the Arcade Dashboard.
Quick Start
Install the CLI
uv tool install arcade-mcp
Scaffold a new server
arcade new my_server
cd my_server/src/my_server
The scaffold creates pyproject.toml, .env.example, and a server.py with example tools.
A minimal tool:
fromtypingimportAnnotatedfromarcade_mcp_serverimportMCPAppapp=MCPApp(name="my_server", version="1.0.0")
@app.tooldefgreet(name: Annotated[str, "Name to greet"]) ->str:
"""Greet a person by name."""returnf"Hello, {name}!"if__name__=="__main__":
app.run(transport="stdio")
Run
uv run server.py # stdio (default), for Claude Desktop and CLI tools
uv run server.py http # HTTP+SSE, for Cursor and VS Code; docs at http://127.0.0.1:8000/docs
Configure your MCP client
arcade configure claude # Claude Desktop, stdio
arcade configure cursor --transport http --port 8080 # Cursor, local HTTP on :8080
arcade configure vscode --entrypoint my_server.py # VS Code, stdio launching my_server.py
For more patterns (MCP resources, sampling, progress reporting, tool chaining, end-to-end agents, eval suites, Resource Server Auth), browse examples/mcp_servers/. Run arcade --help for the full CLI.
With Arcade Cloud
arcade login followed by arcade deploy packages your server, discovers and upserts required secrets, and polls until it's healthy on Arcade Cloud. From there, the Arcade Engine fulfills authorized tool calling flows for end users, and arcade server logs/list/status plus arcade dashboard provide observability and management.
Standalone is supported too. Run your server in any MCP client over stdio or HTTP. Supply your own access tokens for tools with requires_auth=..., and protect production HTTP endpoints with Resource Server Auth (OAuth 2.1 Bearer tokens validated against your IdP).
Install from Source
Requires Python 3.10+ and uv.
git clone https://github.com/ArcadeAI/arcade-mcp.git
cd arcade-mcp
make install
See CONTRIBUTING.md for development workflow and SECURITY.md for vulnerability reporting.
Community
License
MIT. See LICENSE.
About
MCP Server Framework and Tool Development library for building custom capabilities into agents. 
docs.arcade.dev
Topics
aiarcadearcade-aiclaudeclaude-codeclaude-mcpmcpmcp-frameworkmcp-gatewaymcp-runtimemcp-servermcp-serversmcp-toolsmcpservermodel-context-protocolmodel-context-protocol-sdkpython
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
1.0k stars
Watchers
7 watching
Forks
113 forks
Report repository
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
Arcade
LicenseCIPyPIPython Version
Arcade MCP
Open-source Python framework for building MCP servers and tools.
Documentation • Examples • Discord
What is arcade-mcp
arcade-mcp is the Python framework for building Model Context Protocol servers and the tools that run inside them. It powers the 7,500+ prebuilt tools across 81 MCP servers at Arcade.dev, and is open-sourced so you can build your own.
Use it when you need MCP tools that aren't already in the prebuilt catalog: internal APIs, custom OAuth providers, domain-specific integrations.
Highlights:
  • Decorator API covering the full MCP spec: tools, resources, prompts, sampling, elicitation, progress, logging.
  • Authorized tool calling. Declare requires_auth=GitHub(scopes=["repo"]) and Arcade handles OAuth, token refresh, and per-call scoping. The client and the LLM never see the token.
  • Vendor-neutral. Any MCP client, any LLM, any agent framework (LangChain, Mastra, Pydantic AI, CrewAI, Google ADK, OpenAI Agents).
  • arcade evals for testing tool-call accuracy against real LLMs.
  • arcade deploy for one-command hosting on Arcade Cloud.
Authorized tool calling
Tools can declare:
  1. Which OAuth scopes they need, and Arcade handles the rest: prompting the end user to authorize, storing and refreshing tokens, scoping them per call
  2. API keys or any other secrets, and Arcade hosts the secrets securely in an encrypted environment.
The secrets (OAuth tokens, API keys, etc) are securely injected by Arcade into your tool call at runtime, so that your tool can authorize requests to upstream APIs, for example. The client and the LLM never see the secret values.
A tool that reads the user's GitHub repos is one decorator away:
fromarcade_mcp_serverimportMCPApp, Contextfromarcade_mcp_server.authimportGitHubapp=MCPApp(name="gh", version="1.0.0")
@app.tool(requires_auth=GitHub(scopes=["repo"]))asyncdeflist_my_repos(context: Context) ->list[str]:
"""List the authenticated user's GitHub repositories."""token=context.get_auth_token_or_empty()
...
When the tool is invoked through Arcade Cloud, the user is presented with a URL to complete the OAuth challenge in their browser. On success, the token is injected into context for that call. Subsequent calls reuse and refresh the token automatically.
22 helper classes ship with the framework for popular providers:
Asana, Atlassian, Attio, ClickUp, Discord, Dropbox, Figma, GitHub, Google, Hubspot, Linear, LinkedIn, Microsoft, Notion, PagerDuty, Reddit, Slack, Spotify, Twitch, X, Zoom.
For any other OAuth API, use the generic OAuth2(...) class and register your OAuth app in the Arcade Dashboard.
Quick Start
Install the CLI
uv tool install arcade-mcp
Scaffold a new server
arcade new my_server
cd my_server/src/my_server
The scaffold creates pyproject.toml, .env.example, and a server.py with example tools.
A minimal tool:
fromtypingimportAnnotatedfromarcade_mcp_serverimportMCPAppapp=MCPApp(name="my_server", version="1.0.0")
@app.tooldefgreet(name: Annotated[str, "Name to greet"]) ->str:
"""Greet a person by name."""returnf"Hello, {name}!"if__name__=="__main__":
app.run(transport="stdio")
Run
uv run server.py # stdio (default), for Claude Desktop and CLI tools
uv run server.py http # HTTP+SSE, for Cursor and VS Code; docs at http://127.0.0.1:8000/docs
Configure your MCP client
arcade configure claude # Claude Desktop, stdio
arcade configure cursor --transport http --port 8080 # Cursor, local HTTP on :8080
arcade configure vscode --entrypoint my_server.py # VS Code, stdio launching my_server.py
For more patterns (MCP resources, sampling, progress reporting, tool chaining, end-to-end agents, eval suites, Resource Server Auth), browse examples/mcp_servers/. Run arcade --help for the full CLI.
With Arcade Cloud
arcade login followed by arcade deploy packages your server, discovers and upserts required secrets, and polls until it's healthy on Arcade Cloud. From there, the Arcade Engine fulfills authorized tool calling flows for end users, and arcade server logs/list/status plus arcade dashboard provide observability and management.
Standalone is supported too. Run your server in any MCP client over stdio or HTTP. Supply your own access tokens for tools with requires_auth=..., and protect production HTTP endpoints with Resource Server Auth (OAuth 2.1 Bearer tokens validated against your IdP).
Install from Source
Requires Python 3.10+ and uv.
git clone https://github.com/ArcadeAI/arcade-mcp.git
cd arcade-mcp
make install
See CONTRIBUTING.md for development workflow and SECURITY.md for vulnerability reporting.
Community
License
MIT. See LICENSE.
About
MCP Server Framework and Tool Development library for building custom capabilities into agents. 
docs.arcade.dev
Topics
aiarcadearcade-aiclaudeclaude-codeclaude-mcpmcpmcp-frameworkmcp-gatewaymcp-runtimemcp-servermcp-serversmcp-toolsmcpservermodel-context-protocolmodel-context-protocol-sdkpython
Resources
Readme
MIT license
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
1.0k stars
Watchers
7 watching
Forks
113 forks
Report repository
Used by
Contributors
Languages