A **hosted version** of the LangSmith MCP Server is available over HTTP-streamable transport, so you can connect without running the server yourself:
A hosted version of the LangSmith MCP Server is available over HTTP-streamable transport, so you can connect without running the server yourself:
curl -LsSf https://astral.sh/uv/install.sh | sh - LangSmith API key – from smith.langchain.com - Node.js (optional) – only if you want to use MCP Inspector to test the server (stdio or streamable-http)Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.
Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| get_billing_usage | Fetch organization billing usage (e.g. trace counts) for a date range. Optional workspace filter; returns metrics with workspace names inline. |
{
"mcpServers": {
"LangSmith MCP (Hosted)": {
"url": "https://langsmith-mcp-server.onrender.com/mcp",
"headers": {
"LANGSMITH-API-KEY": "lsv2_pt_your_api_key_here"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
curl -LsSf https://astral.sh/uv/install.sh | sh - LangSmith API key – from smith.langchain.com - Node.js (optional) – only if you want to use MCP Inspector to test the server (stdio or streamable-http)| Variable | Description | Required |
|---|---|---|
| LANGSMITH_API_KEY | Credential the server authenticates with. | Yes |
| LANGSMITH_WORKSPACE_ID | Configuration value read at startup. | Optional |
| LANGSMITH_ENDPOINT | Configuration value read at startup. | Optional |
| LANGSMITH_MONITORING_API_KEY | Credential the server authenticates with. | Yes |
| LANGSMITH_MONITORING_WORKSPACE_ID | Configuration value read at startup. | Optional |
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