Documentation · CertKit

Resolving an API error?

Every shipped REST API code is documented in the error reference.

Create a workspace, publish a template, and issue your first verifiable certificate.

Validate, map, and issue up to 1,000 certificate rows safely.

Authenticate and issue a certificate with the public REST API.

Scope API keys, retry writes safely, and paginate without leaking credentials.

Design immutable certificate templates with safe placeholders and real previews.

Connect, verify, and monitor certificate email through your own provider.

Map signed course-completion events into durable certificate issuance.

Understand permanent verification pages, expiry, revocation, and reinstatement.

Understand monthly limits, feature gates, resets, and safe quota failures.

Choose currency, understand activation, and manage subscription changes safely.

Resolve every currently shipped public REST API error code.

Diagnose rendering, delivery, API, and verification problems without exposing secrets.