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agent402.tools Webhook Secure Intake
x402
agent402.tools Webhook Secure Intake is a paid API for AI agents from agent402.tools, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-30).
Verifies webhook signatures from GitHub, Stripe, Shopify, or Slack (constant-time, replay-window enforced), then schema-validates and normalizes the payload in a single bundled call.
Price / call$0.006
Success—
StatusUnknown
How this service works
The production ingest path for every incoming webhook: verify the provider signature (GitHub / Stripe / Shopify / Slack, constant-time, replay-window enforced), schema-validate the now-trusted body against the provider envelope, fingerprint the raw bytes for redelivery dedup, normalize the event timestamp to UTC + epoch, and redact PII before anything hits a log. Five pure-CPU tools - the accept-or-reject gate, run on every event.
Output
Returns a verified and schema-validated webhook payload, confirming the signature is authentic and the event is within the replay protection window, along with the normalized event data ready for downstream processing.
Example use cases
Example prompt
“Verify this incoming Stripe webhook for me — the raw body is the JSON string I received, the signature header is 't=1714000000,v1=abc123...', my signing secret is 'whsec_xxxx', and the timestamp is '1714000000'.”
Technical details
Endpoint
POSThttps://agent402.tools/api/skill/webhook-intake?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a single, bundled call that handles both signature verification and schema validation for webhooks from GitHub, Stripe, Shopify, or Slack — especially when you need constant-time comparison and replay-window enforcement without building that logic yourself.
Side effects
- Invalid or mismatched signature returns authentication failure
- Timestamp outside replay window returns replay attack rejection
- Unsupported provider name returns validation error
- Malformed raw body causes signature verification failure
- Missing required fields (secret, rawBody, provider, signature) returns 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| secret | string | the webhook signing secret from the provider dashboard (never echoed back) |
| rawBody | string | the raw webhook body exactly as received on the wire (signatures are over the raw bytes) |
| provider | string | which provider signed the webhook: github | stripe | shopify | slack |
| signature | string | the signature header value, with or without its scheme prefix (sha256= / v0= / t=...,v1=...) |
| timestamp | string | the provider timestamp header - required for stripe/slack replay protection (stripe's may ride in the signature's t= element) |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "full example in /openapi.json",
"truncated": true
}
}Tags
x402
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