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PREWAVE-BE-059 — Sign Outbound Webhooks and Make Delivery Idempotent #655
Description
Problem context
Source audit identified this distinct API production-readiness boundary.
Technical scope
Add versioned envelopes, signature/timestamp/delivery ID, retry policy, endpoint validation, and audit history.
Required tests
Receiver timeout, 2xx/4xx/5xx, redirect, duplicate, key rotation, SSRF target, and retry tests.
Acceptance criteria
- Recipients can verify integrity/replay.
- One logical event has stable delivery identity.
- Unsafe endpoints are rejected.
- Retries are bounded.
Constraints
Canonical finalized contract events remain authoritative. Bind chain data to chain/release/artifact provenance; fail closed on stale, ambiguous, unauthorized, or incomplete state. Do not weaken CI or expose secrets/protected data.
Dependencies
- PREWAVE-BE-045 (PREWAVE-BE-045 — Enforce SSRF-Safe External Request Policies #640)
- PREWAVE-BE-037 (PREWAVE-BE-037 — Prove V2 Outbox Idempotency Under Concurrent Workers #633)
Non-goals
Unrelated work, mainnet deployment, or applying Stellar Wave before maintainer activation.
Complexity and points
- High — 200 points
Candidate only; activation remains maintainer-controlled.
Activity
Hamzasaheed commentedon Oct 15, 2026
@Hamzasaheed has applied to work on this issue as part of the Stellar Wave Program's 10th wave.
ℹ️ Repo Maintainers: To accept this application, review their application or assign @Hamzasaheed to this issue.
mubking commentedon Oct 15, 2026
Hi, I'm Mubarak — a Full-Stack & Blockchain Developer with 3+ years of experience. I've reviewed this issue and I'm confident I can handle it. I'll submit a clean PR within 2–3 days. Please assign it to me!
drips-wave commentedon Oct 16, 2026
Congratulations, @Hamzasaheed! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on October 22, 2026.
🧑💻 @Hamzasaheed: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.
Warning
When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.
🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.
🌊 Happy Wave 🌊
fix: PREWAVE-BE-059 — Sign Outbound Webhooks and Make Delivery Id (Di…
drips-wave commentedon Oct 18, 2026
This issue has been completed by @Hamzasaheed as part of the Stellar Wave Program's 10th Wave 🥳
😎 @Hamzasaheed: You earned 200 Points for completing this issue! Once the Wave's rewards are finalized, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.
🧑💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.