vercel-log-drains-webhooks

name	vercel-log-drains-webhooks
description	Receive and verify Vercel Log Drains deliveries. Use when setting up a Vercel log drain HTTP endpoint, debugging x-vercel-signature verification, handling the x-vercel-verify endpoint handshake, or processing batched log entries from sources like lambda, edge, build, static, external, firewall, and redirect.
license	MIT
metadata	{"author":"hookdeck","version":"0.1.0","repository":"https://github.com/hookdeck/webhook-skills"}

Vercel Log Drains Webhooks

Vercel Log Drains forward deployment logs to any HTTPS endpoint you configure. These are HTTP log-drain deliveries (not "Vercel webhooks" and not Standard Webhooks): Vercel POSTs batches of log entries and signs the raw body with HMAC-SHA1.

When to Use This Skill

• How do I receive Vercel Log Drains?
• How do I verify the x-vercel-signature header?
• How do I complete the x-vercel-verify endpoint handshake?
• Why is my Vercel log drain signature verification failing?
• How do I parse batched log entries (JSON array or NDJSON)?
• How do I handle logs from lambda, edge, build, or firewall sources?

Verification (core)

Vercel signs the raw request body with HMAC-SHA1 keyed on your drain's signature secret and sends the digest in the header (the raw digest — no prefix). Use the body (do not re-serialize), and compare timing-safe.