Start
Docs
How to use Context Atlas from a coding agent or a browser, through the MCP server, the agent prompt, the llms.txt files and the JSON API.
Context Atlas is a catalog of the sources that vendors publish for coding agents: llms.txt indexes, docs, MCP servers, agent skills, rule files and CLIs. It exists so that a project can be built and run entirely from inside an agent harness such as Claude Code, Codex or Cursor, without a person opening dashboards or vendor consoles.
The catalog itself is small. Its value is that your agent finds the right, current, vendor-maintained sources for a stack instead of relying on what it remembers from training.
Three ways in
| You want to… | Use | Start here |
|---|---|---|
| Let an agent search the catalog with tools | The MCP server at https://contextatlas.dev/mcp | MCP server |
| Point an agent at the catalog with one sentence | The prompt on /agent | Give it to your agent |
| Read the catalog yourself or from a script | The home page, /llms.txt and the JSON API | Site map |
Nothing needs an account, a key or a login.
New here?
Follow the Quickstart. It connects the MCP server to your agent and runs a first query in about two minutes.
For agents
Every page of these docs is also available as Markdown: add .md to the URL, for example /docs/mcp.md. /llms.txt links all of them, and /llms-full.txt contains the catalog and every docs page in one file.