Implement Granola webhook signature verification and payload parsing - #2
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TheGreatAxios merged 1 commit intoAug 2, 2026
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Replaces the skeleton placeholder with real Standard-Webhooks HMAC-SHA256 verification (multi-signature rotation support, timestamp tolerance, constant-time compare) and payload parsing/validation. Pure functions, no network or side effects. Adds arktype as a real dependency. Dispatch (the GranolaIngressOptions/GranolaWebhookHandler skeleton) is dropped for now — it belongs to the ingest-router slice, which needs its own lifecycle-hooks design and isn't part of this move.
TheGreatAxios
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cl-5089-move-granola-webhook-signature-verification-payload-parsing
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August 2, 2026 20:52
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Summary
verifyGranolaSignatureplaceholder with the real Standard-Webhooks HMAC-SHA256 implementation moved fromcorbitsdev/scout(hub/src/granola/webhook.ts) — signature verification, secret decoding, timestamp-freshness check, multi-signature rotation support, constant-time compareparseGranolaPayload,GranolaWebhookPayload) and the test-signing helper (signGranolaPayload)arktypeas a real dependency (the skeleton had none)GranolaIngressOptions/GranolaWebhookHandlerdispatch placeholder — dispatch belongs to the ingest-router slice, which needs its own lifecycle-hooks design (deferred, tracked separately) and isn't a lift-and-shift like this oneTest plan
bun run check-deps— cleanbun run typecheck— cleanbun run test:ingress— 20 passbun run test:tools— 2 pass (unaffected)bun run build— cleanCL-5089