CORS Checker & Preflight Tester

Test simple and OPTIONS preflight CORS behavior with normalized policy evidence, risky-pattern findings, and truthful per-endpoint failures.

Publisher description, verbatim

Last 7 dayson this actor

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Key figures21 readings

Price / 1k$3.00per 1,000 endpoint-audited

Users / 30d1↑ 1 over 21 readings

Users, all time2↑ 1 over 21 readings

Runs / 30d20↑ 19 over 20 readings

Runs / user / mo20.0runs per monthly user

Users / 30d21 readings

Recorded changes

showing 2 of 2 in the last 30 days · followers get the next one by email

2026-08-23changeTitle changed—on record
2026-08-19changeListed—on record

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