Capsule

Compact, source-linked context packs that reduce token waste for coding agents.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "capsule": {
      "command": "npx",
      "args": [
        "-y",
        "capsulectx"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

Capsule

Compact, source-linked context packs for coding agents.

Docs · Quickstart · Commands

MCP gives agents tools. Skills give agents procedures. Capsules give agents compact project context.

Large repositories make coding agents burn tokens rediscovering the same files, decisions, conventions, and setup details over and over. Capsule targets a 50–70% reduction in repeated repository-discovery context for large, multi-session agent work.

Install

No install required — run directly with npx (always gets the latest version):

Terminal

npx capsulectx init

Or install globally with your package manager:

bash

# npm
npm install -g capsulectx

# pnpm
pnpm add -g capsulectx

# yarn
yarn global add capsulectx

# bun
bun add -g capsulectx

Keep it up to date:

Terminal

npm install -g capsulectx --prefer-online

Tip: npx is the easiest option — it always runs the latest published version with no manual update step.

Quickstart

Terminal

npx capsulectx init

Capsule scans your repo, optionally enriches capsules with AI (using your installed Claude CLI, API keys, or a generated prompt for any browser-based AI), and creates:

Code

.capsules/
  index.md
  architecture.md
  setup.md
  api.md
  data.md
  ui.md
  testing.md
  deployment.md

Each capsule is a Markdown file with source fingerprints in JSON frontmatter:

---json
{
  "name": "api",
  "sources": ["src/api/**"],
  "fingerprints": { "src/api/users.ts": "sha256:..." },
  "updated_at": "2026-06-20T14:00:00.000Z"
}
---

# API Capsule

## Purpose

Request handlers, routes, controllers, and service boundaries.

## Key Files

- `src/api/users.ts`: source file matched by this capsule.

## Decisions

- Record stable decisions here so future agents do not rediscover them.

Agents read .capsules/index.md, choose the relevant capsule, check staleness, then inspect only the source files that actually matter.

Commands

Command	What it does
`capsule init`	Scan repo, run AI enrichment (optional), write all capsules
`capsule enrich`	Re-run AI enrichment on existing capsules
`capsule apply`	Apply AI-generated JSON to capsule Conventions and Decisions
`capsule write <name>`	Refresh one capsule from source (preserves your edits)
`capsule refresh <name>`	Explicitly refresh one capsule
`capsule refresh --all`	Explicitly refresh all detected capsules
`capsule get <name>`	Print one capsule to stdout
`capsule scan`	Print detected source groups without writing
`capsule stale [name]`	Check which source files changed since last write
`capsule estimate <name>`	Show estimated token savings for one capsule
`capsule stats`	Show token savings across all capsules
`capsule report [name]`	Show reproducible source/capsule/stale token savings
`capsule report --write`	Write `.capsules/report.md` as a proof artifact
`capsule check`	CI-friendly freshness/config check; exits nonzero on stale or missing capsules
`capsule --mcp`	Start MCP server for native agent integration

MCP Server

Capsule ships an MCP server so Claude Code and other MCP-compatible agents can natively discover and consume capsules — no manual file reads needed.

Add to your project's .claude/settings.json:

config.json

{
  "mcpServers": {
    "capsule": {
      "command": "npx",
      "args": ["capsulectx", "--mcp"]
    }
  }
}

Or globally in ~/.claude/settings.json to enable for all projects.

Once configured, agents get these tools automatically:

Tool	What it does
`capsule_list`	List all capsules with freshness status
`capsule_get`	Read a capsule's compressed context; warns when stale but does not write
`capsule_refresh`	Explicitly refresh one capsule or all capsules
`capsule_stale`	Check which capsules have outdated sources
`capsule_stats`	Show token savings per capsule
`capsule_report`	Show machine-readable discovery-savings proof
`capsule_check`	CI-style stale/missing/config check
`capsule_init`	Generate capsules for the current repo

Capsules are also available as MCP resources at capsule:///index and capsule:///{name}.

Seeing the savings

Code

$ capsule report architecture

Capsule: architecture

  capsule       status     source   capsule     stale   saved
  architecture  fresh       9,607       417         0     96%

Token counts use the cl100k_base tokenizer for accurate measurement.

For CI, run:

Terminal

npx capsulectx check

It exits nonzero when capsules are stale, missing, or blocked by invalid config.

Agent Workflow

Add this to AGENTS.md, CLAUDE.md, Cursor rules, or your agent instructions:

Before working in this repo:

1. Read `.capsules/index.md` if it exists.
2. Read the capsule matching the task area.
3. Run `capsule stale <name>` when the CLI is available.
4. If stale, inspect changed source files before editing.
5. Update capsules when durable project knowledge changes.

Works with any agent that can read files — Claude Code, Codex, Cursor, Windsurf, Devin, custom MCP agents.

Custom Groups

Capsule detects standard layouts out of the box. For non-standard structure, add .capsules/config.json:

config.json

{
  "groups": [
    {
      "name": "workers",
      "description": "Background jobs, queues, and scheduled tasks.",
      "sources": ["src/workers/**", "src/jobs/**"]
    }
  ],
  "ignore": ["legacy/**"]
}

A groups entry with the same name as a default group overrides it. New names are appended. ignore patterns extend the default ignore list.

See docs/capsule-format.md for the public capsule file format.

Building the Demo

The animation in this README is a generated GIF — no screen-recording tools required.

Terminal

npm run demo

Requires rsvg-convert (librsvg / librsvg2-tools) and ffmpeg. The script outputs docs/demo.gif from SVG frames rendered at 2× for retina. See scripts/build-demo.mjs.

Documentation Site

The OSS docs live in docs-site/ and are built with VitePress.

Terminal

npm run docs:dev
npm run docs:build

Status

Capsule is early but functional. Current capabilities:

Language-agnostic repo scanning with monorepo support (Turborepo, pnpm workspaces)
Static analysis: framework detection, table/model extraction, route detection, env vars
AI enrichment on init — launches your installed Claude CLI, calls Claude/OpenAI API, or generates a prompt for any browser-based AI (Claude.ai, ChatGPT, Cursor, Windsurf)
Write-safe re-generation: human edits to Conventions and Decisions are preserved on refresh
MCP server for native Claude Code / agent integration
Real token counting (cl100k_base) with savings dashboard
TypeScript API surface extraction
Binary file filtering
Stale detection and token savings estimation
Reproducible report and CI-friendly check
Custom group config via .capsules/config.json
Auto-patches CLAUDE.md, AGENTS.md, .cursorrules, .windsurfrules with capsule instructions

Roadmap:

smarter write that diffs source changes and suggests targeted updates
before/after token reports for real agent sessions
GitHub Action wrapper for capsule check

Install for Local Development

bash

git clone https://github.com/dawitlabs/capsule.git
cd capsule
npm install
npm run build
node dist/cli.js init

License

MIT

Read the full README →View source on GitHub →

Related MCP Servers

View all in Finance & Fintech View all alternatives

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars

Stargazers on the source repository.

npm downloads

119

Package downloads in the last 30 days.

Last commit

2mo ago

Most recent push to the default branch.

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about Capsule

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "capsule": { "command": "npx", "args": ["-y", "capsule"] } }

AllMCPs Directory Badge

Full Badge Customizer

Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

Live Dynamic SVG Preview

Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/capsule?style=directory)](https://allmcps.com/mcp/capsule)

HTML Embed

<a href="https://allmcps.com/mcp/capsule"><img src="https://allmcps.com/api/badge/capsule?style=directory" alt="Capsule on AllMCPs" /></a>

Technical Specs & Signals

CategoryFinance & Fintech

41Quality signal: Fair · 41/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools15/30

Adoption & activity6/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

★ Spotlight Slot

Feature Your MCP Server

Get maximum visibility for your server across our directory, search results, and detail pages.

Spotlight Your Server

Own this project?

This directory is pre-filled from public sources. Claim via GitHub README, site badge, or DNS TXT to unlock edit access and the Official badge — proof is checked automatically, then reviewed by our team.

Free dofollow backlink: add your website and place the AllMCPs badge on it — no claim needed. We detect it automatically and keep it verified as long as the badge stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 💰 Finance & Fintech →Best MCP servers for Finance & Fintech →Alternatives to Capsule →Install in Claude Desktop Install in Cursor Install in VS Code

Capsule

Compact, source-linked context packs that reduce token waste for coding agents.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "capsule": {
      "command": "npx",
      "args": [
        "-y",
        "capsulectx"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

Capsule

Compact, source-linked context packs for coding agents.

Docs · Quickstart · Commands

MCP gives agents tools. Skills give agents procedures. Capsules give agents compact project context.

Install

No install required — run directly with npx (always gets the latest version):

Terminal

npx capsulectx init

Or install globally with your package manager:

bash

# npm
npm install -g capsulectx

# pnpm
pnpm add -g capsulectx

# yarn
yarn global add capsulectx

# bun
bun add -g capsulectx

Keep it up to date:

Terminal

npm install -g capsulectx --prefer-online

Tip: npx is the easiest option — it always runs the latest published version with no manual update step.

Quickstart

Terminal

npx capsulectx init

Capsule scans your repo, optionally enriches capsules with AI (using your installed Claude CLI, API keys, or a generated prompt for any browser-based AI), and creates:

Code

.capsules/
  index.md
  architecture.md
  setup.md
  api.md
  data.md
  ui.md
  testing.md
  deployment.md

Each capsule is a Markdown file with source fingerprints in JSON frontmatter:

---json
{
  "name": "api",
  "sources": ["src/api/**"],
  "fingerprints": { "src/api/users.ts": "sha256:..." },
  "updated_at": "2026-06-20T14:00:00.000Z"
}
---

# API Capsule

## Purpose

Request handlers, routes, controllers, and service boundaries.

## Key Files

- `src/api/users.ts`: source file matched by this capsule.

## Decisions

- Record stable decisions here so future agents do not rediscover them.

Agents read .capsules/index.md, choose the relevant capsule, check staleness, then inspect only the source files that actually matter.

Commands

Command	What it does
`capsule init`	Scan repo, run AI enrichment (optional), write all capsules
`capsule enrich`	Re-run AI enrichment on existing capsules
`capsule apply`	Apply AI-generated JSON to capsule Conventions and Decisions
`capsule write <name>`	Refresh one capsule from source (preserves your edits)
`capsule refresh <name>`	Explicitly refresh one capsule
`capsule refresh --all`	Explicitly refresh all detected capsules
`capsule get <name>`	Print one capsule to stdout
`capsule scan`	Print detected source groups without writing
`capsule stale [name]`	Check which source files changed since last write
`capsule estimate <name>`	Show estimated token savings for one capsule
`capsule stats`	Show token savings across all capsules
`capsule report [name]`	Show reproducible source/capsule/stale token savings
`capsule report --write`	Write `.capsules/report.md` as a proof artifact
`capsule check`	CI-friendly freshness/config check; exits nonzero on stale or missing capsules
`capsule --mcp`	Start MCP server for native agent integration

MCP Server

Capsule ships an MCP server so Claude Code and other MCP-compatible agents can natively discover and consume capsules — no manual file reads needed.

Add to your project's .claude/settings.json:

config.json

{
  "mcpServers": {
    "capsule": {
      "command": "npx",
      "args": ["capsulectx", "--mcp"]
    }
  }
}

Or globally in ~/.claude/settings.json to enable for all projects.

Once configured, agents get these tools automatically:

Tool	What it does
`capsule_list`	List all capsules with freshness status
`capsule_get`	Read a capsule's compressed context; warns when stale but does not write
`capsule_refresh`	Explicitly refresh one capsule or all capsules
`capsule_stale`	Check which capsules have outdated sources
`capsule_stats`	Show token savings per capsule
`capsule_report`	Show machine-readable discovery-savings proof
`capsule_check`	CI-style stale/missing/config check
`capsule_init`	Generate capsules for the current repo

Capsules are also available as MCP resources at capsule:///index and capsule:///{name}.

Seeing the savings

Code

$ capsule report architecture

Capsule: architecture

  capsule       status     source   capsule     stale   saved
  architecture  fresh       9,607       417         0     96%

Token counts use the cl100k_base tokenizer for accurate measurement.

For CI, run:

Terminal

npx capsulectx check

It exits nonzero when capsules are stale, missing, or blocked by invalid config.

Agent Workflow

Add this to AGENTS.md, CLAUDE.md, Cursor rules, or your agent instructions:

Before working in this repo:

1. Read `.capsules/index.md` if it exists.
2. Read the capsule matching the task area.
3. Run `capsule stale <name>` when the CLI is available.
4. If stale, inspect changed source files before editing.
5. Update capsules when durable project knowledge changes.

Works with any agent that can read files — Claude Code, Codex, Cursor, Windsurf, Devin, custom MCP agents.

Custom Groups

Capsule detects standard layouts out of the box. For non-standard structure, add .capsules/config.json:

config.json

{
  "groups": [
    {
      "name": "workers",
      "description": "Background jobs, queues, and scheduled tasks.",
      "sources": ["src/workers/**", "src/jobs/**"]
    }
  ],
  "ignore": ["legacy/**"]
}

A groups entry with the same name as a default group overrides it. New names are appended. ignore patterns extend the default ignore list.

See docs/capsule-format.md for the public capsule file format.

Building the Demo

The animation in this README is a generated GIF — no screen-recording tools required.

Terminal

npm run demo

Requires rsvg-convert (librsvg / librsvg2-tools) and ffmpeg. The script outputs docs/demo.gif from SVG frames rendered at 2× for retina. See scripts/build-demo.mjs.

Documentation Site

The OSS docs live in docs-site/ and are built with VitePress.

Terminal

npm run docs:dev
npm run docs:build

Status

Capsule is early but functional. Current capabilities:

Language-agnostic repo scanning with monorepo support (Turborepo, pnpm workspaces)
Static analysis: framework detection, table/model extraction, route detection, env vars
AI enrichment on init — launches your installed Claude CLI, calls Claude/OpenAI API, or generates a prompt for any browser-based AI (Claude.ai, ChatGPT, Cursor, Windsurf)
Write-safe re-generation: human edits to Conventions and Decisions are preserved on refresh
MCP server for native Claude Code / agent integration
Real token counting (cl100k_base) with savings dashboard
TypeScript API surface extraction
Binary file filtering
Stale detection and token savings estimation
Reproducible report and CI-friendly check
Custom group config via .capsules/config.json
Auto-patches CLAUDE.md, AGENTS.md, .cursorrules, .windsurfrules with capsule instructions

Roadmap:

smarter write that diffs source changes and suggests targeted updates
before/after token reports for real agent sessions
GitHub Action wrapper for capsule check

Install for Local Development

bash

git clone https://github.com/dawitlabs/capsule.git
cd capsule
npm install
npm run build
node dist/cli.js init

License

MIT

Read the full README →View source on GitHub →

Related MCP Servers

View all in Finance & Fintech View all alternatives

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars

Stargazers on the source repository.

npm downloads

119

Package downloads in the last 30 days.

Last commit

2mo ago

Most recent push to the default branch.

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about Capsule

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "capsule": { "command": "npx", "args": ["-y", "capsule"] } }

AllMCPs Directory Badge

Full Badge Customizer

Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

Live Dynamic SVG Preview

Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/capsule?style=directory)](https://allmcps.com/mcp/capsule)

HTML Embed

<a href="https://allmcps.com/mcp/capsule"><img src="https://allmcps.com/api/badge/capsule?style=directory" alt="Capsule on AllMCPs" /></a>

Technical Specs & Signals

CategoryFinance & Fintech

41Quality signal: Fair · 41/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools15/30

Adoption & activity6/15

Community engagement0/10

★ Spotlight Slot

Feature Your MCP Server

Get maximum visibility for your server across our directory, search results, and detail pages.

Spotlight Your Server

Own this project?

Free dofollow backlink: add your website and place the AllMCPs badge on it — no claim needed. We detect it automatically and keep it verified as long as the badge stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 💰 Finance & Fintech →Best MCP servers for Finance & Fintech →Alternatives to Capsule →Install in Claude Desktop Install in Cursor Install in VS Code