Hookdeck Inspect is a free, no-account webhook tester your coding agent can drive with plain HTTP

Shown on HN Nov 3, curl -X POST https://inspect.hookdeck.com/ returns an ingest_url for webhooks and a requests_url that long-polls up to 25 seconds and hands back the next request as JSON, so an agent can test an integration end to end without a browser. It also ships mock payloads from 150+ providers like Stripe and GitHub, an OpenAPI spec, and an agent skill via npx skills add hookdeck/agent-skills --skill inspect (Show HN).