Action Gateway Featurespublic

Last verified 23 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.

Action Gateway connects applications and agents to catalog tools, with session-scoped access and provider credentials resolved at execution time.

  • Managed MCP endpoint: Connect a coding agent or application to a session-specific MCP URL, or use the Python or TypeScript SDK.

  • Tool catalog: Discover tools for external services and DigitalOcean resources with action_search, or register your own MCP server.

  • Tool and code execution: Invoke tools individually or in parallel with action_invoke. Use action_code for Python computation and workflows combining tools.

  • Credential isolation: Credentials for tools accessed through Action Gateway never enter the model context. Secrets and tokens are stored in DigitalOcean Secrets Manager and resolved when the tool executes.

  • Toolbelts: Group tools into a versioned Toolbelt for session selection, group permissions, and preloading. Pin the Toolbelt version to keep its member selection stable.

  • Session controls: Set tool policies, actor identity, instructions, preloaded tools, and optional VPC access for code execution. Use output views to trim tool results.

  • Reliable execution: Apply bounded retries and provider idempotency according to each tool’s supported execution policy.

  • Insights: Every tool call is traced. View request volume, success rate, tool usage, and provider latency on the Insights tab under Action Gateway in the Control Panel.

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