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YouTube MCP Integration for LangChain

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

7 functions 7 read 0 write API key auth
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Connect YouTube 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.

YouTube MCP Config for LangChain

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

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

Run the Gateway Manually

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

Why Use KosmoKrator Here

Scoped tools

Expose only YouTube 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.

YouTube Tools Visible to LangChain

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

MCP toolSource functionTypeDescription
integration__youtube__youtube_search_videos youtube.youtube_search_videos Read Search for videos, channels, or playlists on YouTube using keywords, filters, and sorting options. Returns matching results with snippet metadata.
integration__youtube__youtube_get_video_details youtube.youtube_get_video_details Read Get detailed information about one or more YouTube videos by ID, including title, description, thumbnails, duration, view count, likes, and channel info.
integration__youtube__youtube_list_channels youtube.youtube_list_channels Read List YouTube channels by username, channel ID, or category. Returns channel snippets, statistics, and content details.
integration__youtube__youtube_get_channel youtube.youtube_get_channel Read Get detailed information about a specific YouTube channel by ID, including snippet, statistics (subscribers, views, videos), content details, and branding settings.
integration__youtube__youtube_list_playlists youtube.youtube_list_playlists Read List playlists for a YouTube channel or by playlist IDs. Returns playlist snippets and content details.
integration__youtube__youtube_get_playlist youtube.youtube_get_playlist Read Get details about a specific YouTube playlist by ID, including its metadata and up to 50 playlist items (videos).
integration__youtube__youtube_get_current_user youtube.youtube_get_current_user Read Get the authenticated user's YouTube channel information, including channel title, description, subscriber count, total views, and video count.

Related YouTube Pages

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