KosmoKrator

no-code

Bubble MCP Integration for LangChain

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

5 functions 2 read 3 write API key auth
Submit Bubble feedback View package source

Connect Bubble 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.

Bubble MCP Config for LangChain

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

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

Run the Gateway Manually

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

Why Use KosmoKrator Here

Scoped tools

Expose only Bubble 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.

Bubble Tools Visible to LangChain

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

MCP toolSource functionTypeDescription
integration__bubble__bubble_list_records bubble.bubble_list_records Read List records from a Bubble data type. Supports filtering with constraints, pagination with limit and cursor. Returns matching records and a remaining count for further pagination.
integration__bubble__bubble_get_record bubble.bubble_get_record Read Get a single record from Bubble by its data type and unique ID. Returns all fields of the record.
integration__bubble__bubble_create_record bubble.bubble_create_record Write Create a new record in a Bubble data type. Provide field names and values as a JSON object. Returns the created record including its generated ID.
integration__bubble__bubble_update_record bubble.bubble_update_record Write Update an existing record in Bubble by its data type and unique ID. Only the fields provided will be changed; other fields remain unchanged. Returns the updated record.
integration__bubble__bubble_delete_record bubble.bubble_delete_record Write Delete a record from Bubble by its data type and unique ID. This action is permanent and cannot be undone.

Related Bubble Pages

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