KosmoKrator

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OpenRouter MCP Integration for LangGraph

Connect OpenRouter to LangGraph 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 OpenRouter to LangGraph

Run KosmoKrator integration calls from LangGraph nodes while preserving local credentials and permissions.

Use a graph node that calls the KosmoKrator CLI for deterministic steps or an MCP client for dynamic tool selection. The gateway is local, scoped to this integration, and starts with --write=deny so LangGraph can inspect read-capable tools without receiving write access by default.

OpenRouter MCP Config for LangGraph

Headless CLI calls fit repeatable graph edges; MCP fits exploratory agent nodes.

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

Run the Gateway Manually

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

Why Use KosmoKrator Here

Scoped tools

Expose only OpenRouter 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.

OpenRouter Tools Visible to LangGraph

LangGraph sees stable MCP tool names generated from the OpenRouter integration catalog.

MCP toolSource functionTypeDescription
integration__openrouter__openrouter_list_models openrouter.openrouter_list_models Read List available AI models on OpenRouter. Returns model identifiers, names, pricing, context lengths, and capabilities.
integration__openrouter__openrouter_create_completion openrouter.openrouter_create_completion Write Create a chat completion using any model available on OpenRouter. Supports multi-turn conversations, system prompts, temperature control, and configurable output length.
integration__openrouter__openrouter_list_generations openrouter.openrouter_list_generations Read List generation records from OpenRouter. Returns generation IDs, models used, token counts, and costs.
integration__openrouter__openrouter_get_generation openrouter.openrouter_get_generation Read Get details for a specific OpenRouter generation, including token usage, costs, and latency.
integration__openrouter__openrouter_list_api_keys openrouter.openrouter_list_api_keys Read List API keys for the OpenRouter account. Returns key names, creation dates, and usage limits.
integration__openrouter__openrouter_get_usage openrouter.openrouter_get_usage Read Get usage statistics for the OpenRouter account, including token counts and costs.
integration__openrouter__openrouter_get_current_user openrouter.openrouter_get_current_user Read Get the authenticated user's profile and account information.

Related OpenRouter Pages

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