KosmoKrator

communication

Knock MCP Integration for LangGraph

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

7 functions 6 read 1 write API key auth
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Connect Knock 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.

Knock MCP Config for LangGraph

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

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

Run the Gateway Manually

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

Why Use KosmoKrator Here

Scoped tools

Expose only Knock 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.

Knock Tools Visible to LangGraph

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

MCP toolSource functionTypeDescription
integration__knock__knock_list_workflows knock.knock_list_workflows Read List notification workflows from Knock. Returns workflow IDs and details you can use to trigger or inspect workflows.
integration__knock__knock_get_workflow knock.knock_get_workflow Read Get details of a specific notification workflow in Knock, including its steps and configuration.
integration__knock__knock_trigger_workflow knock.knock_trigger_workflow Write Trigger a notification workflow in Knock for one or more recipients. The workflow will execute its configured steps (email, Slack, in-app, etc.) for each recipient.
integration__knock__knock_list_messages knock.knock_list_messages Read List notification messages from Knock. Optionally filter by delivery status (e.g., sent, delivered, undelivered).
integration__knock__knock_get_message knock.knock_get_message Read Get details of a specific notification message in Knock, including its content, delivery status, and channel.
integration__knock__knock_list_recipients knock.knock_list_recipients Read List notification recipients from Knock. Returns recipient identifiers and their preferences.
integration__knock__knock_get_current_user knock.knock_get_current_user Read Get the currently authenticated Knock user. Useful for verifying API credentials and inspecting account details.

Related Knock Pages

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