Verify an AI agent's authority and integrity before a transaction; returns a fou
Verify an AI agent's authority and integrity before a transaction; returns a four-state verdict, a signed verification record, and after payment a linked signed settlement receipt
Answeringour last check, 2026-09-24
1 of 1checks answered this week
571 msmedian answer time
$0.01listed price per call
$0.01price 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://staging.flint.network/api/x402/verify
| Category | Everything else |
|---|---|
| Provider host | staging.flint.network |
| Networks | eip155:84532 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.01 | 571 ms |
Example input (from the provider)
{
"body": {
"agent_claim": {
"agent_id": "invoice-bot",
"agent_runtime_hint": "api_meter",
"principal_hint": "coinbase",
"wallet_type": "eoa"
},
"declared_scope": {
"allowed_counterparties": [
"acme_checkout"
],
"max_amount_per_tx_display": "50.00"
},
"merchant_reference": "acme_checkout",
"nonce": "x402-demo-01J7QJ3VQV4X30B6XEXBHHDM",
"partner_id": "bazaar_demo",
"timestamp": "2026-06-13T12:00:00.000Z",
"transaction": {
"amount_display": "24.50",
"chain": "eip155:84532",
"counterparty_address": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
"token": {
"issuer": "circle",
"symbol": "USDC"
}
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"agent_claim": {
"properties": {
"agent_id": {
"type": "string"
},
"agent_runtime_hint": {
"type": "string"
},
"fp_request_id": {
"type": "string"
},
"principal_hint": {
"type": "string"
},
"spiffe_svid": {
"type": "string"
},
"wallet_type": {
"type": "string"
}
},
"type": "object"
},
"declared_scope": {
"properties": {
"allowed_counterparties": {
"items": {
"type": "string"
},
"type": "array"
},
"max_amount_per_tx_display": {
"type": "string"
},
"time_window_end": {
"format": "date-time",
"type": "string"
}
},
"type": "object"
},
"merchant_reference": {
"type": "string"
},
"nonce": {
"minLength": 8,
"type": "string"
},
"partner_id": {
"type": "string"
},
"passport_id": {
"type": "string"
},
"timestamp": {
"format": "date-time",
"type": "string"
},
"transaction": {
"properties": {
"amount_display": {
"type": "string"
},
"chain": {
"type": "string"
},
"counterparty_address": {
"type": "string"
},
"token": {
"properties": {
"issuer": {
"type": "string"
},
"symbol": {
"type": "string"
}
},
"type": "object"
}
},
"required": [
"amount_display"
],
"type": "object"
}
},
"required": [
"nonce",
"timestamp",
"transaction",
"agent_claim"
],
"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": {
"compliance": {
"type": "object"
},
"ok": {
"type": "boolean"
},
"receipt_status": {
"enum": [
"issued",
"unavailable",
"disabled"
],
"type": "string"
},
"settlement_receipt": {
"anyOf": [
{
"properties": {
"idempotent": {
"type": "boolean"
},
"receipt_id": {
"pattern": "^fsr_",
"type": "string"
},
"record": {
"type": "object"
}
},
"required": [
"receipt_id",
"record",
"idempotent"
],
"type": "object"
},
{
"type": "null"
}
]
},
"signed_record": {
"type": "string"
},
"verdict": {
"enum": [
"allow",
"step_up",
"review",
"block"
],
"type": "string"
}
},
"required": [
"ok",
"verdict",
"signed_record",
"receipt_status",
"settlement_receipt"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}