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CTX

local context for agents

CTX is local, inspectable memory for AI agents: each context is a folder under ~/.ctx with plain markdown notes plus search indices over files you add. Nothing leaves your machine except the API calls you configure (today: OpenAI for embeddings and extraction). Use one context from the CLI, from MCP, or from installable skills so every agent reads and writes the same source of truth instead of losing it in chat history.

Install

You need OPENAI_API_KEY in your environment.

brew tap satoricorp/tap
brew install satoricorp/tap/ctx

Build from source: clone the repo, then cargo install --path . --bins.

Release tarballs, Homebrew formula assets, and .deb packaging are described in packaging/README.md for anyone shipping or mirroring installs.

Use it

ctx init memory --description "Shared notes across my agents"
ctx use memory
ctx add .# index a tree; runs in the background — use ctx status
ctx remember "Facts agents should keep"
ctx query "what do we know about auth?"
ctx notes # open editable notes (notes/index.md, summary.md, topics/)
ctx update # refresh after files or notes change
ctx doctor # ctx doctor --fix for repairs

Mental model:init / use pick the memory space. add ingests paths. remember appends durable markdown. query searches notes + indexed content. Wrong context = missing answers — use ctx use <name> or ctx query -c <name>.

Agents (Codex-style): skills live under skills/.curated. After install, restart the runtime.

npx skills add https://github.com/satoricorp/ctx --skill ctx-cli -g -y
npx skills add https://github.com/satoricorp/ctx --skill ctx-mcp -g -y

HTTP API:ctx-server --host 127.0.0.1 --port 8787 — e.g. GET /status, POST /query with JSON {"ctx":"name","query":"…","k":3}.

MCP:ctx mcp --port 8788 — tools include ctx_add, ctx_query, ctx_record, ctx_notes_read, ctx_notes_write.

Environment (optional)

VariablePurpose
OPENAI_API_KEYRequired for extraction and embeddings
CTX_PATHContext storage root (default ~/.ctx)
CTX_IMAGEDefault context when -c is omitted
CTX_HOST / CTX_PORTctx-server bind
PORTPort fallback in hosted environments
CTX_OPENAI_BASE_URLOpenAI-compatible API base URL
CTX_EMBEDDING_BATCH_SIZEEmbedding batch size
CTX_SEMANTIC_INGEST_CONCURRENCYParallel semantic extraction
CTX_SEMANTIC_CHUNK_MERGE_MAX_TOKENSOptional chunk merge cap

Why keep this table here: people self-hosting or tuning ingestion should not have to read the source to discover knobs.

Contributing

git clone <your-fork>cd ctx
cargo install --path . --bins
cargo test

Change runtime behavior → update this README, relevant docs/, and tests. Main Rust areas: src/lib.rs, src/install.rs, src/models/, src/mcp.rs, src/api/, src/notes_update.rs.

Archived multi-backend design notes: docs/embedded-models-archive.md — kept so contributors do not duplicate old work or ask “where did it go?”

License

AGPL-3.0 — see LICENSE.

About

buildctx.com

Resources

Readme
AGPL-3.0 license
Activity
Custom properties

Stars

2 stars

Watchers

0 watching

Forks

0 forks
Report repository

Releases

Packages

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
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CTX
local context for agents
CTX is local, inspectable memory for AI agents: each context is a folder under ~/.ctx with plain markdown notes plus search indices over files you add. Nothing leaves your machine except the API calls you configure (today: OpenAI for embeddings and extraction). Use one context from the CLI, from MCP, or from installable skills so every agent reads and writes the same source of truth instead of losing it in chat history.
Install
You need OPENAI_API_KEY in your environment.
brew tap satoricorp/tap
brew install satoricorp/tap/ctx
Build from source: clone the repo, then cargo install --path . --bins.
Release tarballs, Homebrew formula assets, and .deb packaging are described in packaging/README.md for anyone shipping or mirroring installs.
Use it
ctx init memory --description "Shared notes across my agents"
ctx use memory
ctx add .# index a tree; runs in the background — use ctx status
ctx remember "Facts agents should keep"
ctx query "what do we know about auth?"
ctx notes # open editable notes (notes/index.md, summary.md, topics/)
ctx update # refresh after files or notes change
ctx doctor # ctx doctor --fix for repairs
Mental model:init / use pick the memory space. add ingests paths. remember appends durable markdown. query searches notes + indexed content. Wrong context = missing answers — use ctx use <name> or ctx query -c <name>.
Agents (Codex-style): skills live under skills/.curated. After install, restart the runtime.
npx skills add https://github.com/satoricorp/ctx --skill ctx-cli -g -y
npx skills add https://github.com/satoricorp/ctx --skill ctx-mcp -g -y
HTTP API:ctx-server --host 127.0.0.1 --port 8787 — e.g. GET /status, POST /query with JSON {"ctx":"name","query":"…","k":3}.
MCP:ctx mcp --port 8788 — tools include ctx_add, ctx_query, ctx_record, ctx_notes_read, ctx_notes_write.
Environment (optional)
VariablePurpose
OPENAI_API_KEYRequired for extraction and embeddings
CTX_PATHContext storage root (default ~/.ctx)
CTX_IMAGEDefault context when -c is omitted
CTX_HOST / CTX_PORTctx-server bind
PORTPort fallback in hosted environments
CTX_OPENAI_BASE_URLOpenAI-compatible API base URL
CTX_EMBEDDING_BATCH_SIZEEmbedding batch size
CTX_SEMANTIC_INGEST_CONCURRENCYParallel semantic extraction
CTX_SEMANTIC_CHUNK_MERGE_MAX_TOKENSOptional chunk merge cap
Why keep this table here: people self-hosting or tuning ingestion should not have to read the source to discover knobs.
Contributing
git clone <your-fork>cd ctx
cargo install --path . --bins
cargo test
Change runtime behavior → update this README, relevant docs/, and tests. Main Rust areas: src/lib.rs, src/install.rs, src/models/, src/mcp.rs, src/api/, src/notes_update.rs.
Archived multi-backend design notes: docs/embedded-models-archive.md — kept so contributors do not duplicate old work or ask “where did it go?”
License
AGPL-3.0 — see LICENSE.
About
buildctx.com
Resources
Readme
AGPL-3.0 license
Activity
Custom properties
Stars
2 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
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
CTX
local context for agents
CTX is local, inspectable memory for AI agents: each context is a folder under ~/.ctx with plain markdown notes plus search indices over files you add. Nothing leaves your machine except the API calls you configure (today: OpenAI for embeddings and extraction). Use one context from the CLI, from MCP, or from installable skills so every agent reads and writes the same source of truth instead of losing it in chat history.
Install
You need OPENAI_API_KEY in your environment.
brew tap satoricorp/tap
brew install satoricorp/tap/ctx
Build from source: clone the repo, then cargo install --path . --bins.
Release tarballs, Homebrew formula assets, and .deb packaging are described in packaging/README.md for anyone shipping or mirroring installs.
Use it
ctx init memory --description "Shared notes across my agents"
ctx use memory
ctx add .# index a tree; runs in the background — use ctx status
ctx remember "Facts agents should keep"
ctx query "what do we know about auth?"
ctx notes # open editable notes (notes/index.md, summary.md, topics/)
ctx update # refresh after files or notes change
ctx doctor # ctx doctor --fix for repairs
Mental model:init / use pick the memory space. add ingests paths. remember appends durable markdown. query searches notes + indexed content. Wrong context = missing answers — use ctx use <name> or ctx query -c <name>.
Agents (Codex-style): skills live under skills/.curated. After install, restart the runtime.
npx skills add https://github.com/satoricorp/ctx --skill ctx-cli -g -y
npx skills add https://github.com/satoricorp/ctx --skill ctx-mcp -g -y
HTTP API:ctx-server --host 127.0.0.1 --port 8787 — e.g. GET /status, POST /query with JSON {"ctx":"name","query":"…","k":3}.
MCP:ctx mcp --port 8788 — tools include ctx_add, ctx_query, ctx_record, ctx_notes_read, ctx_notes_write.
Environment (optional)
VariablePurpose
OPENAI_API_KEYRequired for extraction and embeddings
CTX_PATHContext storage root (default ~/.ctx)
CTX_IMAGEDefault context when -c is omitted
CTX_HOST / CTX_PORTctx-server bind
PORTPort fallback in hosted environments
CTX_OPENAI_BASE_URLOpenAI-compatible API base URL
CTX_EMBEDDING_BATCH_SIZEEmbedding batch size
CTX_SEMANTIC_INGEST_CONCURRENCYParallel semantic extraction
CTX_SEMANTIC_CHUNK_MERGE_MAX_TOKENSOptional chunk merge cap
Why keep this table here: people self-hosting or tuning ingestion should not have to read the source to discover knobs.
Contributing
git clone <your-fork>cd ctx
cargo install --path . --bins
cargo test
Change runtime behavior → update this README, relevant docs/, and tests. Main Rust areas: src/lib.rs, src/install.rs, src/models/, src/mcp.rs, src/api/, src/notes_update.rs.
Archived multi-backend design notes: docs/embedded-models-archive.md — kept so contributors do not duplicate old work or ask “where did it go?”
License
AGPL-3.0 — see LICENSE.
About
buildctx.com
Resources
Readme
AGPL-3.0 license
Activity
Custom properties
Stars
2 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
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
CTX
local context for agents
CTX is local, inspectable memory for AI agents: each context is a folder under ~/.ctx with plain markdown notes plus search indices over files you add. Nothing leaves your machine except the API calls you configure (today: OpenAI for embeddings and extraction). Use one context from the CLI, from MCP, or from installable skills so every agent reads and writes the same source of truth instead of losing it in chat history.
Install
You need OPENAI_API_KEY in your environment.
brew tap satoricorp/tap
brew install satoricorp/tap/ctx
Build from source: clone the repo, then cargo install --path . --bins.
Release tarballs, Homebrew formula assets, and .deb packaging are described in packaging/README.md for anyone shipping or mirroring installs.
Use it
ctx init memory --description "Shared notes across my agents"
ctx use memory
ctx add .# index a tree; runs in the background — use ctx status
ctx remember "Facts agents should keep"
ctx query "what do we know about auth?"
ctx notes # open editable notes (notes/index.md, summary.md, topics/)
ctx update # refresh after files or notes change
ctx doctor # ctx doctor --fix for repairs
Mental model:init / use pick the memory space. add ingests paths. remember appends durable markdown. query searches notes + indexed content. Wrong context = missing answers — use ctx use <name> or ctx query -c <name>.
Agents (Codex-style): skills live under skills/.curated. After install, restart the runtime.
npx skills add https://github.com/satoricorp/ctx --skill ctx-cli -g -y
npx skills add https://github.com/satoricorp/ctx --skill ctx-mcp -g -y
HTTP API:ctx-server --host 127.0.0.1 --port 8787 — e.g. GET /status, POST /query with JSON {"ctx":"name","query":"…","k":3}.
MCP:ctx mcp --port 8788 — tools include ctx_add, ctx_query, ctx_record, ctx_notes_read, ctx_notes_write.
Environment (optional)
VariablePurpose
OPENAI_API_KEYRequired for extraction and embeddings
CTX_PATHContext storage root (default ~/.ctx)
CTX_IMAGEDefault context when -c is omitted
CTX_HOST / CTX_PORTctx-server bind
PORTPort fallback in hosted environments
CTX_OPENAI_BASE_URLOpenAI-compatible API base URL
CTX_EMBEDDING_BATCH_SIZEEmbedding batch size
CTX_SEMANTIC_INGEST_CONCURRENCYParallel semantic extraction
CTX_SEMANTIC_CHUNK_MERGE_MAX_TOKENSOptional chunk merge cap
Why keep this table here: people self-hosting or tuning ingestion should not have to read the source to discover knobs.
Contributing
git clone <your-fork>cd ctx
cargo install --path . --bins
cargo test
Change runtime behavior → update this README, relevant docs/, and tests. Main Rust areas: src/lib.rs, src/install.rs, src/models/, src/mcp.rs, src/api/, src/notes_update.rs.
Archived multi-backend design notes: docs/embedded-models-archive.md — kept so contributors do not duplicate old work or ask “where did it go?”
License
AGPL-3.0 — see LICENSE.
About
buildctx.com
Resources
Readme
AGPL-3.0 license
Activity
Custom properties
Stars
2 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
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
CTX
local context for agents
CTX is local, inspectable memory for AI agents: each context is a folder under ~/.ctx with plain markdown notes plus search indices over files you add. Nothing leaves your machine except the API calls you configure (today: OpenAI for embeddings and extraction). Use one context from the CLI, from MCP, or from installable skills so every agent reads and writes the same source of truth instead of losing it in chat history.
Install
You need OPENAI_API_KEY in your environment.
brew tap satoricorp/tap
brew install satoricorp/tap/ctx
Build from source: clone the repo, then cargo install --path . --bins.
Release tarballs, Homebrew formula assets, and .deb packaging are described in packaging/README.md for anyone shipping or mirroring installs.
Use it
ctx init memory --description "Shared notes across my agents"
ctx use memory
ctx add .# index a tree; runs in the background — use ctx status
ctx remember "Facts agents should keep"
ctx query "what do we know about auth?"
ctx notes # open editable notes (notes/index.md, summary.md, topics/)
ctx update # refresh after files or notes change
ctx doctor # ctx doctor --fix for repairs
Mental model:init / use pick the memory space. add ingests paths. remember appends durable markdown. query searches notes + indexed content. Wrong context = missing answers — use ctx use <name> or ctx query -c <name>.
Agents (Codex-style): skills live under skills/.curated. After install, restart the runtime.
npx skills add https://github.com/satoricorp/ctx --skill ctx-cli -g -y
npx skills add https://github.com/satoricorp/ctx --skill ctx-mcp -g -y
HTTP API:ctx-server --host 127.0.0.1 --port 8787 — e.g. GET /status, POST /query with JSON {"ctx":"name","query":"…","k":3}.
MCP:ctx mcp --port 8788 — tools include ctx_add, ctx_query, ctx_record, ctx_notes_read, ctx_notes_write.
Environment (optional)
VariablePurpose
OPENAI_API_KEYRequired for extraction and embeddings
CTX_PATHContext storage root (default ~/.ctx)
CTX_IMAGEDefault context when -c is omitted
CTX_HOST / CTX_PORTctx-server bind
PORTPort fallback in hosted environments
CTX_OPENAI_BASE_URLOpenAI-compatible API base URL
CTX_EMBEDDING_BATCH_SIZEEmbedding batch size
CTX_SEMANTIC_INGEST_CONCURRENCYParallel semantic extraction
CTX_SEMANTIC_CHUNK_MERGE_MAX_TOKENSOptional chunk merge cap
Why keep this table here: people self-hosting or tuning ingestion should not have to read the source to discover knobs.
Contributing
git clone <your-fork>cd ctx
cargo install --path . --bins
cargo test
Change runtime behavior → update this README, relevant docs/, and tests. Main Rust areas: src/lib.rs, src/install.rs, src/models/, src/mcp.rs, src/api/, src/notes_update.rs.
Archived multi-backend design notes: docs/embedded-models-archive.md — kept so contributors do not duplicate old work or ask “where did it go?”
License
AGPL-3.0 — see LICENSE.
About
buildctx.com
Resources
Readme
AGPL-3.0 license
Activity
Custom properties
Stars
2 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
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
BranchesTags
Repository files navigation
CTX
local context for agents
CTX is local, inspectable memory for AI agents: each context is a folder under ~/.ctx with plain markdown notes plus search indices over files you add. Nothing leaves your machine except the API calls you configure (today: OpenAI for embeddings and extraction). Use one context from the CLI, from MCP, or from installable skills so every agent reads and writes the same source of truth instead of losing it in chat history.
Install
You need OPENAI_API_KEY in your environment.
brew tap satoricorp/tap
brew install satoricorp/tap/ctx
Build from source: clone the repo, then cargo install --path . --bins.
Release tarballs, Homebrew formula assets, and .deb packaging are described in packaging/README.md for anyone shipping or mirroring installs.
Use it
ctx init memory --description "Shared notes across my agents"
ctx use memory
ctx add .# index a tree; runs in the background — use ctx status
ctx remember "Facts agents should keep"
ctx query "what do we know about auth?"
ctx notes # open editable notes (notes/index.md, summary.md, topics/)
ctx update # refresh after files or notes change
ctx doctor # ctx doctor --fix for repairs
Mental model:init / use pick the memory space. add ingests paths. remember appends durable markdown. query searches notes + indexed content. Wrong context = missing answers — use ctx use <name> or ctx query -c <name>.
Agents (Codex-style): skills live under skills/.curated. After install, restart the runtime.
npx skills add https://github.com/satoricorp/ctx --skill ctx-cli -g -y
npx skills add https://github.com/satoricorp/ctx --skill ctx-mcp -g -y
HTTP API:ctx-server --host 127.0.0.1 --port 8787 — e.g. GET /status, POST /query with JSON {"ctx":"name","query":"…","k":3}.
MCP:ctx mcp --port 8788 — tools include ctx_add, ctx_query, ctx_record, ctx_notes_read, ctx_notes_write.
Environment (optional)
VariablePurpose
OPENAI_API_KEYRequired for extraction and embeddings
CTX_PATHContext storage root (default ~/.ctx)
CTX_IMAGEDefault context when -c is omitted
CTX_HOST / CTX_PORTctx-server bind
PORTPort fallback in hosted environments
CTX_OPENAI_BASE_URLOpenAI-compatible API base URL
CTX_EMBEDDING_BATCH_SIZEEmbedding batch size
CTX_SEMANTIC_INGEST_CONCURRENCYParallel semantic extraction
CTX_SEMANTIC_CHUNK_MERGE_MAX_TOKENSOptional chunk merge cap
Why keep this table here: people self-hosting or tuning ingestion should not have to read the source to discover knobs.
Contributing
git clone <your-fork>cd ctx
cargo install --path . --bins
cargo test
Change runtime behavior → update this README, relevant docs/, and tests. Main Rust areas: src/lib.rs, src/install.rs, src/models/, src/mcp.rs, src/api/, src/notes_update.rs.
Archived multi-backend design notes: docs/embedded-models-archive.md — kept so contributors do not duplicate old work or ask “where did it go?”
License
AGPL-3.0 — see LICENSE.
About
buildctx.com
Resources
Readme
AGPL-3.0 license
Activity
Custom properties
Stars
2 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
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('^' + ".*" + '

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CTX
local context for agents
CTX is local, inspectable memory for AI agents: each context is a folder under ~/.ctx with plain markdown notes plus search indices over files you add. Nothing leaves your machine except the API calls you configure (today: OpenAI for embeddings and extraction). Use one context from the CLI, from MCP, or from installable skills so every agent reads and writes the same source of truth instead of losing it in chat history.
Install
You need OPENAI_API_KEY in your environment.
brew tap satoricorp/tap
brew install satoricorp/tap/ctx
Build from source: clone the repo, then cargo install --path . --bins.
Release tarballs, Homebrew formula assets, and .deb packaging are described in packaging/README.md for anyone shipping or mirroring installs.
Use it
ctx init memory --description "Shared notes across my agents"
ctx use memory
ctx add .# index a tree; runs in the background — use ctx status
ctx remember "Facts agents should keep"
ctx query "what do we know about auth?"
ctx notes # open editable notes (notes/index.md, summary.md, topics/)
ctx update # refresh after files or notes change
ctx doctor # ctx doctor --fix for repairs
Mental model:init / use pick the memory space. add ingests paths. remember appends durable markdown. query searches notes + indexed content. Wrong context = missing answers — use ctx use <name> or ctx query -c <name>.
Agents (Codex-style): skills live under skills/.curated. After install, restart the runtime.
npx skills add https://github.com/satoricorp/ctx --skill ctx-cli -g -y
npx skills add https://github.com/satoricorp/ctx --skill ctx-mcp -g -y
HTTP API:ctx-server --host 127.0.0.1 --port 8787 — e.g. GET /status, POST /query with JSON {"ctx":"name","query":"…","k":3}.
MCP:ctx mcp --port 8788 — tools include ctx_add, ctx_query, ctx_record, ctx_notes_read, ctx_notes_write.
Environment (optional)
VariablePurpose
OPENAI_API_KEYRequired for extraction and embeddings
CTX_PATHContext storage root (default ~/.ctx)
CTX_IMAGEDefault context when -c is omitted
CTX_HOST / CTX_PORTctx-server bind
PORTPort fallback in hosted environments
CTX_OPENAI_BASE_URLOpenAI-compatible API base URL
CTX_EMBEDDING_BATCH_SIZEEmbedding batch size
CTX_SEMANTIC_INGEST_CONCURRENCYParallel semantic extraction
CTX_SEMANTIC_CHUNK_MERGE_MAX_TOKENSOptional chunk merge cap
Why keep this table here: people self-hosting or tuning ingestion should not have to read the source to discover knobs.
Contributing
git clone <your-fork>cd ctx
cargo install --path . --bins
cargo test
Change runtime behavior → update this README, relevant docs/, and tests. Main Rust areas: src/lib.rs, src/install.rs, src/models/, src/mcp.rs, src/api/, src/notes_update.rs.
Archived multi-backend design notes: docs/embedded-models-archive.md — kept so contributors do not duplicate old work or ask “where did it go?”
License
AGPL-3.0 — see LICENSE.
About
buildctx.com
Resources
Readme
AGPL-3.0 license
Activity
Custom properties
Stars
2 stars
Watchers
0 watching
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0 forks
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, '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); }
})();
})();

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CTX
local context for agents
CTX is local, inspectable memory for AI agents: each context is a folder under ~/.ctx with plain markdown notes plus search indices over files you add. Nothing leaves your machine except the API calls you configure (today: OpenAI for embeddings and extraction). Use one context from the CLI, from MCP, or from installable skills so every agent reads and writes the same source of truth instead of losing it in chat history.
Install
You need OPENAI_API_KEY in your environment.
brew tap satoricorp/tap
brew install satoricorp/tap/ctx
Build from source: clone the repo, then cargo install --path . --bins.
Release tarballs, Homebrew formula assets, and .deb packaging are described in packaging/README.md for anyone shipping or mirroring installs.
Use it
ctx init memory --description "Shared notes across my agents"
ctx use memory
ctx add .# index a tree; runs in the background — use ctx status
ctx remember "Facts agents should keep"
ctx query "what do we know about auth?"
ctx notes # open editable notes (notes/index.md, summary.md, topics/)
ctx update # refresh after files or notes change
ctx doctor # ctx doctor --fix for repairs
Mental model:init / use pick the memory space. add ingests paths. remember appends durable markdown. query searches notes + indexed content. Wrong context = missing answers — use ctx use <name> or ctx query -c <name>.
Agents (Codex-style): skills live under skills/.curated. After install, restart the runtime.
npx skills add https://github.com/satoricorp/ctx --skill ctx-cli -g -y
npx skills add https://github.com/satoricorp/ctx --skill ctx-mcp -g -y
HTTP API:ctx-server --host 127.0.0.1 --port 8787 — e.g. GET /status, POST /query with JSON {"ctx":"name","query":"…","k":3}.
MCP:ctx mcp --port 8788 — tools include ctx_add, ctx_query, ctx_record, ctx_notes_read, ctx_notes_write.
Environment (optional)
VariablePurpose
OPENAI_API_KEYRequired for extraction and embeddings
CTX_PATHContext storage root (default ~/.ctx)
CTX_IMAGEDefault context when -c is omitted
CTX_HOST / CTX_PORTctx-server bind
PORTPort fallback in hosted environments
CTX_OPENAI_BASE_URLOpenAI-compatible API base URL
CTX_EMBEDDING_BATCH_SIZEEmbedding batch size
CTX_SEMANTIC_INGEST_CONCURRENCYParallel semantic extraction
CTX_SEMANTIC_CHUNK_MERGE_MAX_TOKENSOptional chunk merge cap
Why keep this table here: people self-hosting or tuning ingestion should not have to read the source to discover knobs.
Contributing
git clone <your-fork>cd ctx
cargo install --path . --bins
cargo test
Change runtime behavior → update this README, relevant docs/, and tests. Main Rust areas: src/lib.rs, src/install.rs, src/models/, src/mcp.rs, src/api/, src/notes_update.rs.
Archived multi-backend design notes: docs/embedded-models-archive.md — kept so contributors do not duplicate old work or ask “where did it go?”
License
AGPL-3.0 — see LICENSE.
About
buildctx.com
Resources
Readme
AGPL-3.0 license
Activity
Custom properties
Stars
2 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages