Observed arrival · 2026-09-04
IndieOpenAPI checks whether an API description holds together
A private-by-default validator for one OpenAPI document, checking structure, references, operations, examples, and authentication.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The validator accepts a single OpenAPI document as JSON, YAML, or a public URL, then returns a document verdict with counts for paths, operations, schemas, examples, references, and authentication schemes. Its stated limits are 512 KB per document and eight external files for URL-based checks. The page distinguishes validating the description from testing a running API and says pasted or dropped documents remain in the browser, with no account or saved lookup history.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue