Using doc0 with an AI agent

Wire doc0 into Claude Desktop, Cursor, or any MCP client in under a minute.

doc0 speaks Model Context Protocol over stdio. Four tools, all the agent needs.

Tools

Tool	What it does
`list_docs()`	Enumerate every registered source (installed bundles + user-added + community + seed).
`find_docs({ query })`	Registry search. Returns matches; for the top match, inlines the root tree and notes whether `llms-full.txt` is available and how many chunks it has.
`read_docs({ id, path?, full? })`	Read by id. No path → root tree. Directory path → subtree. Page URL/slug → Markdown. `full: true` → the full `llms-full.txt` dump. `full: "heading substring"` → a single matching chunk.
`grep_docs({ id, query })`	Full-text search within a source. Prefers the local `~/.d0/docs-store` cache; falls back to the bundle index, or a bounded live fetch when a URL source has no cache yet.

Most agent flows are one find_docs call followed by one read_docs call. That's the whole point.

Wire it up

Interactive picker

Run doc0 mcp install with no flag for a prompt that lists every supported client. Cursor is available today; Claude Code and Windsurf are on the roadmap and show up marked (coming soon).

doc0 mcp install
# Pick an MCP client to install doc0 into:
#   1) Cursor
#   2) Claude Code  (coming soon)
#   3) Windsurf  (coming soon)
#
# Select 1-3 (default: 1):

The picker only shows when stdin + stdout are a TTY. In scripts or CI, pass the client flag explicitly instead (see below).

Non-interactive (Cursor)

doc0 mcp install --cursor                  # merges into ~/.cursor/mcp.json
doc0 mcp install --cursor --project        # writes ./.cursor/mcp.json instead
doc0 mcp install --cursor --dry-run        # print the merged JSON; write nothing
doc0 mcp install --cursor --yes            # replace an existing mcpServers.d0
doc0 mcp install --list                    # print supported + planned clients, then exit

--claude-code and --windsurf are reserved for future releases and currently error out with coming — not installable yet. They're in the help output so you can see what's coming.

Manual (Claude Desktop)

// ~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "d0": {
      "command": "doc0",
      "args": ["mcp"]
    }
  }
}

Manual (Cursor)

// ~/.cursor/mcp.json
{
  "mcpServers": {
    "d0": { "command": "doc0", "args": ["mcp"] }
  }
}

The mcpServers.d0 key is kept stable for backward compatibility — the command is doc0, the key stays d0.

Installed-only mode

For teams who only want their curated bundles (and no community URL entries) exposed to agents:

doc0 mcp --installed-only

or set D0_MCP_INSTALLED_ONLY=1. Hides every community + seed entry; installed bundles and user-added registry entries stay visible.