Slack Block Kit Validator

Paste Block Kit JSON, see the errors Slack silently swallows.

GitHub npm Slack docs

Validates as a bare blocks array with surface: "message".

Examples

Input

JSON ok

Result

Runs validateBlockKit on every keystroke.

—

Edit the JSON to see validation output.

Runs entirely in your browser — no payload leaves this page. Why you probably want this in tests, not production →

Maintained by Tightknit.