MCP server for Langsmith SDK integration
Listed on its own since 2026-09-25. Until then it was part of iflow-mcp-langchain-ai-langsmith-mcp-server, where its earlier checks remain.
Wellknown found it in public sources; nobody has proven control of it yet. Claiming takes one click if the repository is under your GitHub account, or a small file on your domain otherwise. Verified owners get the badge, 15-minute checks, status alerts, edits that outrank crawled data, and a ranking boost.
Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"langsmith-mcp-server","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
Everything here was measured by our prober or read from a registry. Nothing is self-reported.
Attributed to the source that supplied each field. Treated as claims, not facts.
# 🦜🛠️ LangSmith MCP Server  [](https://opensource.org/licenses/MIT) [](https://www.python.org/downloads/release/python-3100/) A production-ready [Model Context Protocol](https://modelcontextprotocol.io/introduction) (MCP) server that provides seamless integration with the [LangSmith](https://smith.langchain.com) observability platform. This server enables language models to fetch conversation history, prompts, runs and traces, datasets, experiments, and billing usage from LangSmith. ## 📋 Example Use Cases The server enables powerful capabilities including: - 💬 **Conversation History**: "Fetch the history of my conversation from thread 'thread-123' in project 'my-chatbot'" (paginated by character budget) - 📚 **Prompt Management**: "Get all public prompts in my workspace" / "Pull the template for the 'legal-case-summarizer' prompt" - 🔍 **Traces & Runs**: "Fetch the latest 10 root runs from project 'alpha'" / "Get all runs for trace <uuid> (page 2 of 5)" - 📊 **Datasets**: "List datasets of type chat" / "Read examples from dataset 'customer-support-qa'" - 🧪 **Experiments**: "List experiments for dataset 'my-eval-set' with latency and cost metrics" - 📈 **Billing**: "Get billing usage for September 2025" ## 🚀 Quickstart A **hosted version** of the LangSmith MCP Server is available over HTTP-streamable transport, so you can connect without running the server yourself: - **URL:** `https://langsmith-mcp-server.onrender.com/mcp` - **Hosting:** [Render](https://render.com), built from this public repo using the project's Dockerfile. Use it like any HTTP-streamable MCP server: point your client at the URL and send your LangSmith API key in the `LANGSMITH-API-KEY` header. No local in…
Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.
Every source is kept verbatim. Field changes are logged as events.