KosmoKrator

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Anthropic MCP Integration for LangChain

Connect Anthropic to LangChain through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

7 functions 6 read 1 write API key auth
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Connect Anthropic to LangChain

Bridge LangChain agents to local KosmoKrator integration tools through MCP or headless CLI calls.

Use the MCP gateway when the agent should discover tools, or wrap kosmo integrations:call for fixed chains. The gateway is local, scoped to this integration, and starts with --write=deny so LangChain can inspect read-capable tools without receiving write access by default.

Anthropic MCP Config for LangChain

Keep the gateway scoped to the integration and operation class needed by the chain.

{
  "mcpServers": {
    "kosmokrator-anthropic": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=anthropic",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=anthropic --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only Anthropic instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

Anthropic Tools Visible to LangChain

LangChain sees stable MCP tool names generated from the Anthropic integration catalog.

MCP toolSource functionTypeDescription
integration__anthropic__anthropic_list_messages anthropic.anthropic_list_messages Read List messages in the Anthropic conversation history. Returns paginated message resources with optional filtering by model, date, and ID.
integration__anthropic__anthropic_create_message anthropic.anthropic_create_message Write Send a prompt to Claude and receive an AI-generated response. Supports multi-turn conversations, system prompts, temperature control, and configurable output length.
integration__anthropic__anthropic_list_models anthropic.anthropic_list_models Read List available Anthropic AI models. Returns model identifiers, creation dates, and display names.
integration__anthropic__anthropic_get_model anthropic.anthropic_get_model Read Get detailed information about a specific Anthropic model, including its display name, creation date, and capabilities.
integration__anthropic__anthropic_list_workspaces anthropic.anthropic_list_workspaces Read List Anthropic workspaces. Returns workspace identifiers, names, and configuration details.
integration__anthropic__anthropic_get_workspace anthropic.anthropic_get_workspace Read Get detailed information about a specific Anthropic workspace, including its name, configuration, and usage settings.
integration__anthropic__anthropic_get_current_user anthropic.anthropic_get_current_user Read Get the authenticated user's profile and account information.

Related Anthropic Pages

Anthropic CLIUse direct JSON commands instead of MCP discovery. Anthropic MCPFull gateway reference and MCP tool names. KosmoKrator for LangChainClient-level gateway setup.