How do I install the langmcp mcp server?

This profile does not contain a verified copy-paste launch configuration. Follow the current project documentation to confirm the runtime, entry point, transport and authentication before registering it in your client.

What credentials does it need?

It reads `LANGMCP_READ_ONLY`, `POSTGRES_URI`, `THREAD_ID`, `USER_ID` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

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Langmcp MCP Server

Development MCP server for LangGraph checkpoint and store inspection

Local serverstdioPython

What is the Langmcp MCP Server?

Development MCP server for LangGraph checkpoint and store inspection

What the server does

LangMCP helps you answer the debugging question that traces do not always answer:

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

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
health_check	Connectivity, backend types, redacted URIs
list_profiles	Profile names and backend types
list_threads	Discover thread IDs
get_thread_state	Latest or specific checkpoint state
list_checkpoint_history	Paginated checkpoint list
get_checkpoint	Full snapshot for one checkpoint
compare_checkpoints	Diff values and message count delta
summarize_thread	Transcript-style summary
analyze_context_window	Token estimate and size warnings
analyze_memory_gaps	Store versus thread user ID hints
list_namespaces	Store namespace tuples
search_store	Search under namespace prefix
get_store_item	Full store value by key
summarize_user_memory	Grouped keys under a configured or explicit user namespace template

How to install the Langmcp MCP Server

{
  "mcpServers": {
    "langmcp": {
      "command": "uvx",
      "args": [
        "langmcp[all]",
        "serve",
        "--config",
        "ABSOLUTE_PATH_TO_LANGMCP_TOML"
      ],
      "env": {
        "LANGMCP_READ_ONLY": "true",
        "POSTGRES_URI": "postgresql://READONLY_USER:READONLY_PASSWORD@HOST:5432/DB_NAME"
      }
    }
  }
}

From the project documentation. Replace placeholders and example paths before connecting.

Configuration

Variable	Description	Required
LANGMCP_READ_ONLY	Declared in the maintainer’s client configuration.	Check documentation
POSTGRES_URI	Declared in the maintainer’s client configuration.	Check documentation

Example prompts to try

“Use Langmcp to health check.”
“Use Langmcp to list profiles.”
“Use Langmcp to list threads.”

Frequently asked questions

Development MCP server for LangGraph checkpoint and store inspection Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.