Point Fullmakt at an API URL and it generates a ready-to-run collection for you — endpoints discovered, requests scaffolded, credentials wired. Or import an existing Postman collection and keep going.
The Fullmakt workbench is an API client — a Postman alternative for building, running and saving HTTP, GraphQL, WebSocket, gRPC and MCP requests. It is one half of Fullmakt, a credential broker for AI agents: the collections you test here are the same ones you hand to an agent, with scoped credentials, policy and audit attached.
Already testing by hand and wondering how an agent would call the same endpoints? That path is in the agent docs.
Get started in seconds — generate a collection from a live URL, or bring in an existing Postman collection.
Enter any API URL. Fullmakt's AI discovers the available endpoints and scaffolds a full collection — ready to run in seconds.
Already have a Postman collection? Drop the JSON file and your requests, environments, and auth are imported instantly.
HTTP, GraphQL, WebSocket, gRPC, MCP — run them all from one workspace with full governance built in.
Send HTTP/REST, GraphQL, WebSocket, gRPC, and MCP requests from a single workspace. Switch protocols without losing your context.
Record live API traffic from a proxy session, inspect every request and response, and save captures as replayable collections.
Organise requests into collections and folders. Switch between environments (dev, staging, prod) with one click — variables resolve automatically.
Store secrets in the vault. Inject them into requests without hardcoding — vault references resolve at call time, never exposed to agents or the model.
Write pre-request and post-request scripts. Assert on response status, headers, or body fields — results are displayed inline for every request.
Share collections and environments across your team. Role-based access keeps production credentials away from viewers.
Generate a collection from any URL and run your first request without setup. No card required.
Try it free