What is reference-langchain?

A remote MCP server that provides reference information for LangChain. LangChain is a software framework for building applications that use language models, and MCP is a standard way for tools to provide information to an agent.

Use it to connect an agent to the configured LangChain reference service; the available reference topics are not specified here.

The supplied information only identifies the server and its address, so its specific reference content is not described.

reference-langchain — MCP server by sunglasses-dev

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add mcp/sunglasses-dev/sunglasses/langchain-ai__langchain-reference-langchain

Clone the repo

git clone --depth 1 https://github.com/sunglasses-dev/sunglasses

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin 100% copy Near-identical to another mod in the catalogue.

Security

Grade A, and why

reference-langchain scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to reference-langchain — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

tests/repo_ladder_corpus/langchain-ai__langchain/.mcp.json · 6 lines

What it actually says

{
  "reference-langchain": {
    "type": "http",
    "url": "https://reference.langchain.com/mcp"
  }
}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday First seen · 6 lines scan A 3a51be9cb2f4

Subscribe to this mod's changes

reference-langchain is an MCP server published in the GitHub repository sunglasses-dev/sunglasses (4 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. It is 100% identical to reference-langchain, differing in 0 lines, and is treated as a copy.

Data and AI Security Testing agent-security ai-agents ai-security cybersecurity llm-security open-source-ai

reference-langchain

Getting it into your agent

Grade A, and why

Nothing flagged

This is a copy

What it actually says

What this file has done since we first saw it

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