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Documentation Index

Fetch the complete documentation index at: https://docs.3ngram.ai/llms.txt

Use this file to discover all available pages before exploring further.

3ngram speaks the Model Context Protocol (MCP) over Streamable HTTP. Claude Code talks to it through the same MCP add command you use for any other remote server.

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Install

Run this from any terminal — the --scope user flag registers 3ngram globally, so every Claude Code project sees it without per-repo config: 
claude mcp add --transport http --scope user 3ngram https://mcp.3ngram.ai/mcp
The first time Claude Code calls 3ngram it opens a browser for OAuth. Complete the login and the CLI caches the token automatically (Dynamic Client Registration — no client id or secret needed).

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Config file form

If you manage ~/.claude.json by hand, add a 3ngram entry under mcpServers: 
{
  "mcpServers": {
    "3ngram": {
      "transport": "http",
      "url": "https://mcp.3ngram.ai/mcp"
    }
  }
}

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Verify

Run /mcp inside Claude Code and pick 3ngram. The CLI will prompt for OAuth if it has not seen a token yet. Once authorised you can drive 3ngram tools by mentioning 3ngram: in a Claude Code chat. If the connector does not show up, the client troubleshooting guide covers the usual culprits (stale token cache, mixed-scope registrations, transport mismatches).