KosmoKrator

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Facebook MCP Integration for LangChain

Connect Facebook to LangChain 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 Facebook 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.

Facebook MCP Config for LangChain

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

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

Run the Gateway Manually

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

Why Use KosmoKrator Here

Scoped tools

Expose only Facebook 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.

Facebook Tools Visible to LangChain

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

MCP toolSource functionTypeDescription
integration__facebook__facebook_list_pages facebook.facebook_list_pages Read List all Facebook Pages the authenticated user manages. Returns page IDs, names, and access tokens for further operations.
integration__facebook__facebook_get_page facebook.facebook_get_page Read Get details for a specific Facebook Page by its ID. Returns page name, category, follower count, and other metadata.
integration__facebook__facebook_list_posts facebook.facebook_list_posts Read List posts published by a Facebook Page. Returns post IDs, messages, creation times, and engagement metrics.
integration__facebook__facebook_create_post facebook.facebook_create_post Write Publish a new post on a Facebook Page. The post will appear on the Page's timeline immediately unless scheduled.
integration__facebook__facebook_get_post facebook.facebook_get_post Read Get details for a specific Facebook post by its ID. Returns the post content, creation time, and engagement metrics.
integration__facebook__facebook_list_insights facebook.facebook_list_insights Read Get engagement and performance metrics (insights) for a Facebook Page. Supports metrics like page_impressions, page_engaged_users, page_post_engagements, and more.
integration__facebook__facebook_get_current_user facebook.facebook_get_current_user Read Get the authenticated user's Facebook profile information, including name and user ID.

Related Facebook Pages

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