// MCP TOOL REFERENCE

LANGSMITH MCP SERVER TOOLS

15 tools from the LangSmith MCP Server MCP Server, categorised by risk level.

// ALL 15 LANGSMITH MCP SERVER TOOLS

READ 11 tools

Read fetch_runs fetch_runs Read get_billing_usage get_billing_usage Read get_prompt_by_name Get a specific prompt by its exact name. Args: prompt_name (str): The exact name of th... Read get_thread_history get_thread_history Read list_datasets list_datasets Read list_examples list_examples Read list_experiments list_experiments Read list_projects list_projects Read list_prompts list_prompts Read read_dataset read_dataset Read read_example read_example

WRITE 3 tools

Write create_dataset Call this tool when you need to understand how to create datasets in LangSmith. Write push_prompt Call this tool when you need to understand how to create and push prompts to LangSmith. Write update_examples Call this tool when you need to understand how to update dataset examples in LangSmith.

EXECUTE 1 tools

Execute run_experiment Call this tool when you need to understand how to run experiments and evaluations in LangSmith.

// FAQ

How many tools does the LangSmith MCP Server MCP server have? +

The LangSmith MCP Server MCP server exposes 15 tools across 3 categories: Read, Write, Execute.

How do I enforce policies on LangSmith MCP Server tools? +

Route the LangSmith MCP Server server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard; they are enforced on every call before it reaches the server.

What risk categories do LangSmith MCP Server tools fall into? +

LangSmith MCP Server tools are categorised as Read (11), Write (3), Execute (1). Each category has a recommended default policy.

Enforce policy on every LangSmith MCP Server tool call.

Start from LangSmith MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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