Webhook Payload Inspector

Headers (optional)0 headers
Payload Body0 bytes
Paste webhook headers and body to analyze the payload

What This Tool Does

Webhook Payload Inspector is built for deterministic developer and agent workflows.

Analyze webhook payloads with formatted JSON view, HMAC signature verification, and cURL reconstruction.

Use How to Use for execution steps and FAQ for constraints, policies, and edge cases.

Last updated:

This tool is provided as-is for convenience. Output should be verified before use in any production or critical context.

Agent Invocation

Best Path For Builders

Browser workflow

Runs instantly in the browser with private local processing and copy/export-ready output.

Browser Workflow

This tool is optimized for instant in-browser execution with local data handling. Run it here and copy/export the output directly.

/webhook-inspector/

For automation planning, fetch the canonical contract at /api/tool/webhook-inspector.json.

How to Use Webhook Payload Inspector

  1. 1

    Paste webhook payload

    Copy the raw webhook JSON (from GitHub, Stripe, Twilio, etc.) into the input. Supports multiline and escaped JSON strings.

  2. 2

    Format and preview

    The tool auto-formats the JSON and renders a collapsible tree view for easy navigation through nested payloads.

  3. 3

    Inspect key fields

    Search for specific fields (event_type, user_id, amount) and see their values highlighted. Jump to any field instantly.

  4. 4

    Validate against event schema

    Compare the payload against known webhook schemas (GitHub push, Stripe charge.succeeded, etc.). Shows missing or unexpected fields.

  5. 5

    Generate handler code

    Export a TypeScript or Python handler stub for processing this webhook. Includes type definitions for the parsed payload.

Frequently Asked Questions

What is Webhook Payload Inspector?
Webhook Payload Inspector analyzes webhook payloads with formatted JSON viewing, HMAC signature verification, timestamp detection, and cURL command reconstruction. It helps you debug incoming webhook data.
How do I use Webhook Payload Inspector?
Paste your webhook payload (headers and body) into the tool. It auto-formats the JSON, verifies HMAC signatures if you provide a secret, detects timestamps, and generates a cURL command to replay the request.
Is Webhook Payload Inspector free?
Yes. This tool is free to use with immediate access—no account required.
Does Webhook Payload Inspector store or send my data?
No. All processing happens entirely in your browser. Your webhook payloads and secrets stay on your device — nothing is sent to any server.
Which webhook providers does Webhook Payload Inspector support?
It works with any webhook payload regardless of provider. It has built-in support for common patterns from Stripe, GitHub, Slack, Discord, and other popular services for signature verification.