Action Gateway Referencepublic

Last verified 28 Sep 2026

Action Gateway gives applications and AI agents governed access to tens of thousands of tools through a managed MCP endpoint or SDK. See What You Can Build for example use cases of Action Gateway with Harness Runtime.

Additional Tools for Action Gateway

Action Gateway Tool Providers

Action Gateway providers connect agents to external services. Browse public providers and their authentication options.

The DigitalOcean API

The DigitalOcean API lets you manage resources programmatically with standard HTTP requests. All actions available in the control panel are also available through the API.

See the Action Gateway API reference for how to discover tools and providers, manage versioned toolbelts and OAuth connections, and create policy-bound sessions for end users. Action Gateway session creation returns an mcpUrl. Use that URL verbatim when connecting an MCP client; it identifies the session and its environment. See Sessions.

SDKs and Coding Agents

Use the Python or TypeScript SDK to create an Action Gateway session, or configure an MCP client directly. See Connect Action Gateway Tools.

For a guided setup that connects an MCP client and runs a read-only tool, use the Action Gateway Quickstart.

The DigitalOcean Command Line Client, doctl

doctl is the command-line interface for the DigitalOcean API. It supports most of the same actions available in the API and DigitalOcean Control Panel.

You can declare Action Gateway tools in a Harness Runtime environment spec and start the session with doctl harness-runtime. Use the doctl harness-runtime command or run doctl harness-runtime --help to view available options.

For connecting Action Gateway tools from Harness Runtime, see Connect Action Gateway to Harness Runtime.

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