Verify a web claim and get a signed, re-checkable Outcome Receipt — machine-veri
Verify a web claim and get a signed, re-checkable Outcome Receipt — machine-verifiable proof of delivery for agent commerce. The Embassy fetches your HTTPS URL once, server-side, and checks it against your conditions: HTTP status, a body substring, or a JSON field value. The receipt records the check transcript and verdict so anyone can re-verify. $0.15 per check via x402. Fully automated, no human review.
Answers HTTP 200 without x402 payment termsour last check, 2026-09-24
0 of 1checks answered this week
n/amedian answer time
$0.15listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://agent-embassy.fly.dev/v1/check/verify
| Category | Everything else |
|---|---|
| Provider host | agent-embassy.fly.dev |
| Networks | eip155:42161, eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 5 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | no x402 terms | 200 | 390 ms |
Example input (from the provider)
{
"body": {
"expect_json_equals": true,
"expect_json_path": "ok",
"expect_status": 200,
"idempotency_key": "880e8400-e29b-41d4-a716-446655440003",
"url": "https://example.com/api/status"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"agent_wallet": {
"description": "DEV MODE ONLY: wallet to attribute. In live mode the payer wallet from the verified x402 payment is used.",
"type": "string"
},
"expect_body_contains": {
"description": "Substring that must appear in the response body",
"type": "string"
},
"expect_json_equals": {
"description": "Expected value at expect_json_path (compared as JSON)"
},
"expect_json_path": {
"description": "Dot path into a JSON body, e.g. 'data.ok'",
"type": "string"
},
"expect_status": {
"description": "Expected HTTP status of the final response (default 200)",
"type": "number"
},
"idempotency_key": {
"description": "Client-generated UUID; retries return the original receipt",
"type": "string"
},
"url": {
"description": "HTTPS URL to fetch (public hosts only; private IPs refused)",
"type": "string"
}
},
"required": [
"url",
"idempotency_key"
],
"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": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}