LangSmith MCP Server
Rank #780glama/langchain-ai/langsmith-mcp-server
Enables language models to access LangSmith observability platform features including fetching conversation history, managing prompts, retrieving traces and runs, working with datasets and examples, and analyzing experiments.
What you can do with LangSmith MCP Server
LangSmith MCP Server is a Model Context Protocol (MCP) server published by langchain-ai. It ranks #780 of 144,396 active servers on MCP Toplist, and its repository has 131 GitHub stars. LangSmith MCP Server is listed across 2 registries — Glama and PulseMCP, with 5 release tags tracked from its GitHub repository. It was first listed on Sep 22, 2025 and most recently updated on Feb 25, 2026.
Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.
What LangSmith MCP Server can and cannot do
Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.
What you need before using LangSmith MCP Server
The registry listing declares required configuration before first use — typically an API key, token or connection string set via environment variables.
Declared by Glama, last synced Oct 16, 2026. Not independently verified by MCP Toplist.
Hosted endpoint declared as requiring authentication.
Connect LangSmith MCP Server and confirm it works
claude mcp add --transport http langsmith-mcp-server https://langsmith-mcp-server.onrender.com/mcpThis endpoint requires authentication — see the server’s docs for credentials.
[mcp_servers.langsmith-mcp-server]
url = "https://langsmith-mcp-server.onrender.com/mcp"Add to ~/.codex/config.toml. This endpoint requires authentication — see the server’s docs for credentials.
https://langsmith-mcp-server.onrender.com/mcpSettings → Connectors → “Add custom connector”, then paste this URL. This endpoint requires authentication — see the server’s docs for credentials.
{
"mcpServers": {
"langsmith-mcp-server": {
"url": "https://langsmith-mcp-server.onrender.com/mcp"
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). This endpoint requires authentication — see the server’s docs for credentials.
{
"servers": {
"langsmith-mcp-server": {
"type": "http",
"url": "https://langsmith-mcp-server.onrender.com/mcp"
}
}
}Save as .vscode/mcp.json in your workspace. This endpoint requires authentication — see the server’s docs for credentials.
{
"mcpServers": {
"langsmith-mcp-server": {
"serverUrl": "https://langsmith-mcp-server.onrender.com/mcp"
}
}
}Add to ~/.codeium/windsurf/mcp_config.json. This endpoint requires authentication — see the server’s docs for credentials.
{
"mcpServers": {
"langsmith-mcp-server": {
"url": "https://langsmith-mcp-server.onrender.com/mcp"
}
}
}This endpoint requires authentication — see the server’s docs for credentials.
After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.
When to choose another server
No task-specific alternatives are catalogued for LangSmith MCP Serveryet; the list above is its publisher's other servers.
What changed, and when this was checked
- First listed
- Sep 22, 2025
- Latest release tag
- Feb 25, 2026
- Version history
- 5 release tags tracked (below)
- Requirements evidence
- Declared by Glama, last synced Oct 16, 2026. Not independently verified by MCP Toplist.
- Profile checked
- Not yet — purpose, capabilities and requirements above come from registry data only
- Ranking data as of
- Oct 16, 2026
- Glama ↗listed since Apr 26, 2026 · still listed
- PulseMCP ↗listed since Jun 4, 2026 · still listed
Do you maintain LangSmith MCP Server? to correct or enrich this profile.
GitHub releases (5)
No registry surfaces explicit version metadata for this server. The list below shows release tags from the linked GitHub repository.
| Version | Published |
|---|---|
| langsmith-mcp-server==0.1.1 | Feb 25, 2026 |
| langsmith-mcp-server==0.1.0 | Feb 11, 2026 |
| langsmith-mcp-server==0.0.9 | Nov 12, 2025 |
| langsmith-mcp-server==0.0.8 | Nov 12, 2025 |
| langsmith-mcp-server==0.0.7 | Sep 22, 2025 |
Ranks ahead of 143,616 of 144,396 servers on MCP Toplist.
Show your rank
Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.
[](https://mcptoplist.com/server/glama%2Flangchain-ai%2Flangsmith-mcp-server)<a href="https://mcptoplist.com/server/glama%2Flangchain-ai%2Flangsmith-mcp-server"><img src="https://mcptoplist.com/badge/glama%2Flangchain-ai%2Flangsmith-mcp-server.svg" alt="MCP Toplist: Top 1% of 144,396" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
Frequently asked questions
- Who maintains LangSmith MCP Server?
- LangSmith MCP Server is maintained by langchain-ai, which publishes 2 MCP servers (10 total versions) tracked on MCP Toplist.
- Is LangSmith MCP Server listed on the Official MCP Registry?
- LangSmith MCP Server is not on the Official MCP Registry. It is listed on Glama and PulseMCP.
- How many versions does LangSmith MCP Server have?
- No registry surfaces explicit version metadata for LangSmith MCP Server; MCP Toplist tracks 5 release tags from its GitHub repository, most recently published on Feb 25, 2026.
- Where can I find the source code for LangSmith MCP Server?
- The source code for LangSmith MCP Server is hosted at github.com/langchain-ai/langsmith-mcp-server.
Do you run this server?
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