KosmoKrator

healthcare

Weave MCP Integration for LangChain

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

7 functions 7 read 0 write Bearer token auth
Submit Weave feedback View package source

Connect Weave 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.

Weave MCP Config for LangChain

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

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

Run the Gateway Manually

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

Why Use KosmoKrator Here

Scoped tools

Expose only Weave 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.

Weave Tools Visible to LangChain

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

MCP toolSource functionTypeDescription
integration__weave__weave_list_patients weave.weave_list_patients Read Search and list patients from Weave. Returns patient records with names, contact info, and metadata. Use the query parameter to search by name, phone, or email.
integration__weave__weave_get_patient weave.weave_get_patient Read Retrieve a single patient by ID. Returns full patient details including demographics and contact information.
integration__weave__weave_list_appointments weave.weave_list_appointments Read List appointments from Weave with optional date range filtering. Returns appointment records with patient info, scheduled times, and status.
integration__weave__weave_get_appointment weave.weave_get_appointment Read Retrieve a single appointment by ID. Returns full details including patient info, scheduled time, duration, and status.
integration__weave__weave_list_messages weave.weave_list_messages Read List patient messages from Weave with optional type filtering. Returns message records with sender, recipient, content previews, and status.
integration__weave__weave_get_message weave.weave_get_message Read Retrieve a single message by ID. Returns full message content, sender, recipient, timestamps, and delivery status.
integration__weave__weave_get_current_user weave.weave_get_current_user Read Get the currently authenticated Weave user profile. Returns user details including name, email, role, and organization info.

Related Weave Pages

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