feat: implement webhook notifications for certificate lifecycle events (#353)#440
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AnnabelJoe merged 2 commits intoJun 3, 2026
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AnnabelJoe#353) - POST /api/webhooks: supports certificate.minted, certificate.transferred, certificate.retired events (plus legacy anchor/mint/retire) - GET /api/webhooks: list registered endpoints for a cooperative - GET /api/webhooks/logs: delivery log accessible to users - lib/webhooks.ts: exponential backoff (1s/2s/4s/8s/16s) up to 5 attempts, HMAC-SHA256 signature on X-SolarProof-Signature header - queue.ts: fires certificate.minted webhook after successful mint - retire route: fires certificate.retired webhook alongside legacy retire event - v1 re-exports for all new routes Closes AnnabelJoe#353
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Summary
Implements full webhook notification support for certificate lifecycle events, including registration API, HMAC-SHA256 signing, exponential backoff retry, and a delivery log endpoint.
Changes
apps/web/src/app/api/webhooks/route.ts—POSTregisters webhooks with new events;GETlists endpoints for a cooperativeapps/web/src/app/api/webhooks/logs/route.ts—GET /api/webhooks/logs?endpoint_id=returns delivery logapps/web/src/app/api/v1/webhooks/route.ts— v1 re-exportapps/web/src/app/api/v1/webhooks/logs/route.ts— v1 re-exportapps/web/src/lib/webhooks.ts— addscertificate.minted,certificate.transferred,certificate.retiredevents; exponential backoff (1s→2s→4s→8s→16s, 5 max attempts)apps/web/src/lib/queue.ts— firescertificate.mintedafter successful mintapps/web/src/app/api/certificates/[id]/retire/route.ts— firescertificate.retiredalongside legacyretireeventAcceptance Criteria
POST /api/webhooks)certificate.minted,certificate.transferred,certificate.retiredX-SolarProof-Signatureheader)GET /api/webhooks/logs)Type of change
Related issue
Closes #353
Checklist
develop