Summary
Gives your coding agent read, grep, and glob access to the actual source code of every package on PyPI and npm. Instead of guessing what's inside a dependency or hunting through docs, you can search across 800,000+ Python packages and 3 million+ npm packages directly from your editor. New releases get indexed within 5 minutes. Useful when you need to understand how a library actually implements something, trace through unfamiliar code paths, or verify behavior before adding a dependency. Works with Claude Desktop, Cursor, VS Code, Windsurf, and others through the Model Context Protocol.
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Source code search for every package on PyPI and npm.
Sourced.dev provides coding agents with direct access to dependency source code through the Model Context Protocol (MCP). Instead of relying on training data or web searches, agents can read, search, and navigate the actual source of any package — as if it were on your local machine.
Currently tracking all 800,000+ Python packages and all 3,000,000+ npm packages. New releases are indexed within 5 minutes of publication.
Quick Start
Install the MCP server in one command. It authenticates via GitHub and configures your coding agents automatically:
curl -sL sourced.dev/install | sh
The installer will:
- Authorize with GitHub.
- Create an API key.
- Configure the MCP server for your selected agents.
Restart your coding agents after installation to start using Sourced.
Supported Agents
The following coding agents are supported out of the box:
- Claude Code
- Claude Desktop (macOS)
- Cursor
- VS Code
- Windsurf
- Codex
- Gemini CLI
- Kiro
- Zed
- OpenCode
- Copilot CLI
- Antigravity
Capabilities
Sourced.dev exposes the following tools to your coding agent via MCP:
| Tool | Description |
|---|---|
read | Read a file from a package's source code with line numbers. |
grep | Search for a regex pattern across a package's source tree. |
glob | Find files matching a glob pattern within a package. |
All tools accept an ecosystem (e.g. pypi, npm), a package_name, and an optional version (defaults to latest).
Ecosystem Support
- PyPI — 800,000+ packages
- npm — 3,000,000+ packages
- Maven/Gradle — planned
- RubyGems — planned
- Crates.io (Rust) — planned
Next Steps
- Visit sourced.dev to learn more.
- View the Issues page to see open tasks or report a bug.
- Open a Pull Request to contribute.
License
MIT License — see LICENSE for details.
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
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