Paid webhook/API execution for autonomous agents
Paid webhook/API execution for autonomous agents. Executes one public HTTPS action after x402 payment, applies retries and idempotency, then returns a signed receipt with request hash, response hash, target, status, and attempt count.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
294 msmedian answer time
$0.003listed price per call
$0.003price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://action402.vercel.app/api/execute/webhook
| Category | Code and developer |
|---|---|
| Provider host | action402.vercel.app |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 44 from 17 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.003 | 294 ms |
Example input (from the provider)
{
"body": {
"body": {
"event": "agent.test",
"message": "hello from an x402 buyer"
},
"headers": {
"content-type": "application/json"
},
"idempotencyKey": "agent-test-001",
"method": "POST",
"retry": {
"attempts": 2,
"backoffMs": 300
},
"timeoutMs": 10000,
"url": "https://httpbin.org/anything"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"body": {
"description": "JSON body forwarded to the target endpoint."
},
"headers": {
"additionalProperties": {
"type": [
"string",
"number",
"boolean"
]
},
"type": "object"
},
"idempotencyKey": {
"maxLength": 160,
"minLength": 1,
"type": "string"
},
"method": {
"default": "POST",
"enum": [
"POST",
"PUT",
"PATCH",
"DELETE"
],
"type": "string"
},
"retry": {
"additionalProperties": false,
"properties": {
"attempts": {
"default": 1,
"maximum": 3,
"minimum": 1,
"type": "integer"
},
"backoffMs": {
"default": 250,
"maximum": 5000,
"minimum": 0,
"type": "integer"
}
},
"type": "object"
},
"timeoutMs": {
"default": 12000,
"maximum": 12000,
"minimum": 1000,
"type": "integer"
},
"url": {
"description": "Absolute public HTTPS URL to call.",
"type": "string"
}
},
"required": [
"url"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"idempotentReplay": {
"type": "boolean"
},
"job": {
"properties": {
"attempts": {
"type": "integer"
},
"id": {
"type": "string"
},
"status": {
"enum": [
"succeeded",
"failed"
],
"type": "string"
}
},
"required": [
"id",
"status",
"attempts"
],
"type": "object"
},
"links": {
"properties": {
"job": {
"type": "string"
},
"receipt": {
"type": "string"
}
},
"required": [
"job",
"receipt"
],
"type": "object"
},
"mode": {
"enum": [
"demo",
"x402"
],
"type": "string"
},
"receipt": {
"properties": {
"id": {
"type": "string"
},
"replay": {
"type": "boolean"
},
"signature": {
"type": "string"
}
},
"type": "object"
}
},
"required": [
"mode",
"idempotentReplay",
"job",
"receipt",
"links"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}