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Two developer & design tools, side-by-side. See which fits your task.
Developer & Design
Square — webhook tester for developers and ops.
Open square webhook testerDeveloper & Design
Reference for Server-Sent Events API, event streams, and reconnection.
Open SSE EventsYour specific task is square — webhook tester for developers and ops. Open the page, drop your input, get the result — typically under a second.
Your goal is reference for server-sent events api, event streams, and reconnection. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. square webhook tester focuses on square — webhook tester for developers and ops; SSE Events focuses on reference for server-sent events api, event streams, and reconnection. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both square webhook tester and SSE Events work without signup. We only ask for an email if you decide to subscribe to a paid plan.