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Test Webhooks Locally: Tunnels, Replay and Signature Checks

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Self-Hosting & Infra beginner 5 min read $0.01 Updated 2026-10-19

Local webhook development: tunnels (Cloudflare Tunnel, ngrok, localtunnel), provider CLIs and replay, request inspection, raw-body signature verification, idempotent handlers, retry behavior, security of public dev URLs and moving to staging.

Webhook providers cannot reach localhost. Expose a dev server with a tunnel, capture and replay real payloads, verify signatures with the raw body and keep test and live secrets separate.

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#webhooks#testing#ngrok#localhost#development

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