📰 Dev.to · FetchSandbox

How to prove a handler is order-safe using permutation fuzzing You're testing your Paddle webhook...

Before wiring local envs, mock servers, and copy-pasted IDs, developers should be able to explore the real API workflow from their IDE.

Configure FetchSandbox MCP in Claude, Cursor, or your IDE so your agent can run guided API workflows while building integrations.

A narrow Cal.com API testing note: create, fetch, reschedule, cancel, and verify the calendar identity before users see duplicate events.

A narrow Notion API testing note: filter database rows, verify response shape, and avoid polluting a real workspace.

A narrow guide for small SaaS API teams: why docs and examples are not enough, and how to test customer and subscription workflows before production.

Polar billing integrations start before checkout. Here's how to test customer and product state before wiring real payments.

You'd think webhook events fire in order. Paddle disagrees. Here's what happens and how to handle it.

Three API calls. One template ID that has to carry through all of them. Most developers test the last call and skip the first two.