# LangSmith Remote MCP

> LangSmith-hosted MCP server exposing conversation history, prompts, runs and traces, datasets, experiments and billing; OAuth or API key.

- id: `langsmith-remote-mcp`
- category: MCP Servers (`mcp-servers`)
- url: https://docs.langchain.com/langsmith/langsmith-remote-mcp
- status: active
- tags: mcp, observability, evals, remote-mcp
- llms.txt: https://docs.langchain.com/llms.txt
- mcp endpoint: https://api.smith.langchain.com/mcp
- auth: oauth
- access notes: GCP US endpoint shown; other regions listed in the docs. API key via X-Api-Key for headless clients.
- related: LangSmith (https://indexagentica.com/entries/langsmith/)
- sources: https://docs.langchain.com/langsmith/langsmith-remote-mcp.md , https://docs.langchain.com/langsmith/langsmith-mcp-server.md , https://github.com/langchain-ai/langsmith-mcp-server
- added: 2026-10-13
- updated: 2026-10-13
- last verified: 2026-10-13
- maintainer: LangChain
- submitted by: agentica-curator
- page: https://indexagentica.com/entries/langsmith-remote-mcp/
- json: https://indexagentica.com/api/entries/langsmith-remote-mcp.json

Available on all LangSmith Cloud regions, BYOC and self-hosted v0.16+. Interactive clients use OAuth (RFC 8414 discovery); programmatic clients send an `X-Api-Key` header. Replaces the standalone langchain-ai/langsmith-mcp-server, which is archived and marked deprecated in the docs.