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.
npx agentmods add mcp/langchain-ai/deepagents/reference-langchaingit clone --depth 1 https://github.com/langchain-ai/deepagentsGrade 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.
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.
What it actually says
{
"reference-langchain": {
"type": "http",
"url": "https://reference.langchain.com/mcp"
}
}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
reference-langchain is an MCP server published in the GitHub repository langchain-ai/deepagents (28,721 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.
Other mcp servers, from other repositories
senscoder-fastapi
MCP server "senscoder-fastapi" as configured in OMCHOKSI108/MCP-SERVER. Launched with uvicorn app.main:app --host 127.0.0.1 --port 5050. Needs 4 environment variables to run.
playwright
Lets the agent drive a real browser: open pages, click, type, take screenshots and read the accessibility tree, using Playwright. Runs locally from the @playwright/mcp npm package.
svelte
MCP server "svelte", hosted remotely at mcp.svelte.dev, as configured in windmill-labs/windmill.
nx-plugin-for-aws
MCP server "nx-plugin-for-aws" as configured in awslabs/nx-plugin-for-aws. Runs locally from the @aws/nx-plugin-mcp npm package.
debugmcp
MCP server "debugmcp", hosted remotely at localhost, as configured in mifunedev/openharness.
langchain-reference
MCP server "langchain-reference", hosted remotely at reference.langchain.com, as configured in langchain-ai/langchain-plugins.