Dev Reference – HTTP Status Codes by Class

Choose this endpoint when you need a comprehensive enumeration of all HTTP status codes within a specific class (1xx–5xx), rather than looking up a single known status code. Prefer it over a single-code lookup endpoint when you want to build reference tables, populate dropdowns, validate ranges, or present a complete class overview to a user or documentation system.

• Missing or invalid `class` query parameter (not 1–5) — likely returns an error or empty result
• Non-integer value passed as class digit — schema validation failure
• Network or upstream registry unavailability — degraded flag may be set in response
• Class digit outside valid range (e.g. 6 or 0) — no matching codes returned