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Modal MCP Integration for Codex

Connect Modal to Codex 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 Modal to Codex

Use KosmoKrator as a local MCP proxy for Codex so coding sessions can reach selected integrations with explicit write policy.

Register kosmo mcp:serve as a local stdio server and choose the integration allowlist. The gateway is local, scoped to this integration, and starts with --write=deny so Codex can inspect read-capable tools without receiving write access by default.

Modal MCP Config for Codex

Keep write access denied or ask-based unless the workspace is trusted.

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

Run the Gateway Manually

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

Why Use KosmoKrator Here

Scoped tools

Expose only Modal 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.

Modal Tools Visible to Codex

Codex sees stable MCP tool names generated from the Modal integration catalog.

MCP toolSource functionTypeDescription
integration__modal__modal_list_apps modal.modal_list_apps Read List all Modal apps. Returns app IDs, names, and status details.
integration__modal__modal_get_app modal.modal_get_app Read Get details for a specific Modal app by ID, including status and metadata.
integration__modal__modal_list_functions modal.modal_list_functions Read List all functions for a Modal app. Returns function IDs, names, and runtime details.
integration__modal__modal_list_schedules modal.modal_list_schedules Read List all scheduled functions for a Modal app. Returns schedule IDs, cron expressions, and function details.
integration__modal__modal_list_volumes modal.modal_list_volumes Read List all Modal volumes. Returns volume IDs, names, and size details.
integration__modal__modal_list_secrets modal.modal_list_secrets Read List all Modal secrets. Returns secret names and creation dates (values are not exposed).
integration__modal__modal_get_current_user modal.modal_get_current_user Read Get the current authenticated Modal user information, including name, email, and account details.

Related Modal Pages

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