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Dub.co MCP Integration for LangChain

Connect Dub.co 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 Dub.co 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.

Dub.co MCP Config for LangChain

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

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

Run the Gateway Manually

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

Why Use KosmoKrator Here

Scoped tools

Expose only Dub.co 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.

Dub.co Tools Visible to LangChain

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

MCP toolSource functionTypeDescription
integration__dub__dub_list_links dub.dub_list_links Read List short links from Dub.co. Supports pagination, searching, and filtering by domain or tag.
integration__dub__dub_get_link dub.dub_get_link Read Get details of a specific short link by its ID.
integration__dub__dub_create_link dub.dub_create_link Write Create a new short link in Dub.co. Provide a destination URL and optionally a custom domain, key (back-half), title, description, and tags.
integration__dub__dub_list_domains dub.dub_list_domains Read List all domains configured in your Dub.co workspace.
integration__dub__dub_get_domain dub.dub_get_domain Read Get details of a specific domain by its ID or slug.
integration__dub__dub_list_tags dub.dub_list_tags Read List link tags in your Dub.co workspace. Supports pagination and search.
integration__dub__dub_get_current_user dub.dub_get_current_user Read Get the profile of the currently authenticated Dub.co user. Useful for verifying the connection and checking workspace membership.

Related Dub.co Pages

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