How do I install Langchain?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Langchain need an API key?

No required environment variable is listed on this record.

What transport does Langchain use?

Langchain is reached over HTTP.

When was Langchain last checked?

Last checked 2026-11-09. MCP server for langchain documentation, generated by doc2mcp.

Langchain MCP server

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Add to Cursor Add in Claude Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Server URL

https://doc2mcp.site/api/mcp/0cd2635e-0cd5-4712-b33c-13b10c547e42/mcp

The Claude button above opens Claude with the name and URL filled in. You still confirm it there.

shClaude Code

1claude mcp add --transport http io.github.doc2mcp-langchain https://doc2mcp.site/api/mcp/0cd2635e-0cd5-4712-b33c-13b10c547e42/mcp

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "io.github.doc2mcp-langchain": {4      "command": "npx",5      "args": [6        "-y",7        "mcp-remote",8        "https://doc2mcp.site/api/mcp/0cd2635e-0cd5-4712-b33c-13b10c547e42/mcp"9      ]10    }11  }12}

claude_desktop_config.json

Remote · HTTPPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Remote

Transport: http
Version: 1.0.1781396655
Last checked

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

doc2mcp

Documentation infrastructure for AI agents

Paste any docs URL → get a hosted, Cursor-ready MCP server in under 60 seconds.

Live · Docs · SDK · Marketplace · Open Source

⭐ Star this repo — it helps developers discover doc2mcp on GitHub and the MCP Registry.

Three ways to use doc2mcp

Web · CLI · SDK

Surface	Best for	Start here
Web	Instant convert in the browser	doc2mcp.site
CLI	Terminal + one-shot install into Cursor	`npm i -g doc2mcp`
SDK	Code, CI, LangChain / LangGraph / agents	`doc2mcp-sdk`

API keys always come from doc2mcp.site (User PAT + project token). The SDK has no separate login.

The pipeline

The doc2mcp pipeline

Docs URL → crawl → analyze → MCP tools → hosted endpoint → Cursor / Claude / LangChain / LangGraph.

1) Web (normal)

Sign in at doc2mcp.site/login
Paste a docs URL (Stripe, LangChain, Mintlify, GitHub…)
Copy the hosted MCP URL + Bearer token into Cursor / Claude / VS Code

{
  "mcpServers": {
    "my-docs": {
      "url": "https://doc2mcp.site/api/mcp/{project_id}/mcp",
      "headers": { "Authorization": "Bearer <project-token>" }
    }
  }
}

2) CLI

npm install -g doc2mcp
doc2mcp login                 # creates User PAT (d2mcp_pat_…)
doc2mcp https://docs.example.com

Lists the same projects as the dashboard. Install helpers for Cursor / VS Code / Claude / Windsurf.

3) SDK (`doc2mcp-sdk`)

SDK architecture

npm i doc2mcp-sdk

import { Doc2MCP } from "doc2mcp-sdk";

// User PAT from doc2mcp.site / `npx doc2mcp login` — SDK has no auth of its own
const client = new Doc2MCP({ token: process.env.DOC2MCP_API_TOKEN! }); // Settings → d2mcp_usr_…

const ready = await client.convertAndWait({
  sourceUrl: "https://js.langchain.com/docs",
});

const answer = await client.callToolText({
  mcpUrl: ready.mcp.url,
  mcpToken: ready.mcp.token, // project token d2mcp_…
  name: "search_documentation",
  arguments: { query: "how do runnables work?" },
});

Full handbook (API keys, Cursor, Claude, LangChain, LangGraph, LangSmith, OpenAI, Vercel AI SDK, CrewAI, AutoGen, Mastra):

doc2mcp/doc2mcp-sdk → docs/

Product docs page: doc2mcp.site/docs/sdk

MCP tools generated per project

Tool	What it does
`list_documentation_pages`	Every crawled page
`get_documentation_page`	Full markdown of one page
`search_documentation`	Heading-aware search
`get_documentation_overview`	Summary + index
`read_full_documentation`	All pages combined
`ask_documentation`	Q&A with citations

Repos

Repo	Purpose
doc2mcp/doc2mcp (this)	Next.js app, CLI, pipeline, MCP runtime
doc2mcp/doc2mcp-sdk	Programmatic JS/TS SDK + framework examples
doc2mcp/doc2mcp-registry	MCP Registry gateway manifest

Contribute

Read CONTRIBUTING.md and CODE_OF_CONDUCT.md
Branch from staging → open PR → staging
AI review (Gemini PR review) fails the check on must-fix — fix blockers before merge
Coupon opensourcedoc2mcp → Starter free for 12 months on Pricing

More: doc2mcp.site/open-source

Local development

pnpm install
cp .env.example .env.local
pnpm dev

pnpm check
pnpm exec tsc --noEmit --skipLibCheck

CI / CD

Feature → staging (preview) → main → v* tag deploys production on Vercel.

PR checks: Biome/Ultracite, TypeScript, Next build, CLI build, Gemini AI review (must-fix → failed check).

License

MIT — see LICENSE.

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install Langchain?

Does Langchain need an API key?

What transport does Langchain use?

When was Langchain last checked?

Documentation

doc2mcp

Documentation infrastructure for AI agents

Three ways to use doc2mcp

The pipeline

1) Web (normal)

2) CLI

3) SDK (doc2mcp-sdk)

MCP tools generated per project

Repos

Contribute

Local development

CI / CD

License

3) SDK (`doc2mcp-sdk`)