PromptJangWebhook Reliability, Delivered

Async delivery with automatic retries, HMAC signatures, and full observability — built on Cloudflare's edge.

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Reliable Delivery

Automatic retries with exponential backoff. Events flow through a strict state machine — Queued → Processing → Delivered or Expired with a full audit trail.

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HMAC Verification

Every inbound event is verified against an HMAC-SHA256 signature. Unsigned or tampered payloads are rejected before they reach your endpoints.

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Event Replay

Re-deliver any past event with a single API call. Recover from downstream outages without re-processing from source.

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SSRF Protection

Target URLs are validated against private IPs, localhost, link-local, and carrier-grade NAT ranges. No internal network exposure.

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Full Observability

Track every delivery attempt — HTTP status, response body, latency, error details. Know exactly what happened and when.

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Edge-Native

Built with Rust on Cloudflare Workers. D1 for relational data, R2 for payloads, Queues for delivery pipeline, KV for rate limits.