KosmoKrator

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Notion MCP Integration for LangGraph

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

7 functions 6 read 1 write Bearer token auth
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Connect Notion 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.

Notion MCP Config for LangGraph

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

{
  "mcpServers": {
    "kosmokrator-notion2": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=notion2",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=notion2 --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only Notion 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.

Notion Tools Visible to LangGraph

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

MCP toolSource functionTypeDescription
integration__notion2__notion2_list_pages notion2.notion2_list_pages Read Search and list pages in your Notion workspace.
integration__notion2__notion2_get_page notion2.notion2_get_page Read Get detailed information about a Notion page.
integration__notion2__notion2_create_page notion2.notion2_create_page Write Create a new page in Notion.
integration__notion2__notion2_list_databases notion2.notion2_list_databases Read List databases in your Notion workspace.
integration__notion2__notion2_query_database notion2.notion2_query_database Read Query a Notion database with optional filters.
integration__notion2__notion2_list_users notion2.notion2_list_users Read List all users in your Notion workspace.
integration__notion2__notion2_get_current_user notion2.notion2_get_current_user Read Get the currently authenticated Notion user/bot.

Related Notion Pages

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