Heron measures how visible a website is to AI search engines (ChatGPT, Claude, Perplexity, Gemini, Google AI Overviews) and returns a structured improvement plan. The x402 endpoint quotes a per-audit price in USDC on Base; agents pay and receive a machine-readable report. Name-your-price above a transparent floor is supported at /agent/quote. Free instant score at POST /api/audit; manifest at /.well-known/agent.json.
Pay from $9.37 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
UPTIME 24H 100% │ 7D 100% │ 30D 100%
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| GET | /agent/audit?url=https://example.com | Heron AI-visibility (GEO) full report | $9.37 | Base | USDC |
1 endpoints
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /agent/audit?url=https://example.com returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
// request
curl -i 'https://heronapp.io/agent/audit?url=https://example.com'
// 402 response (captured by monitor)
[
{
"x402": {
"asset": "USDC",
"order": 37,
"retry": "/agent/audit?url=https://example.com&order=37",
"amount": 9.37,
"pay_to": "0xB62e1c338a83D3a6621f9127eEa5B000caCfCd01",
"scheme": "exact",
"network": "base",
"asset_contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bDA02913"
},
"error": "Payment required. Pay the USDC amount on Base, then retry with ?order to collect the report.",
"human": "Send 9.37 USDC on Base to 0xB62e1c338a83D3a6621f9127eEa5B000caCfCd01, then GET /agent/audit?url=...&order=37",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bDA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xB62e1c338a83D3a6621f9127eEa5B000caCfCd01",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://heronapp.io/agent/audit?url=https://example.com",
"description": "Heron AI-visibility (GEO) full report",
"maxAmountRequired": "9370000",
"maxTimeoutSeconds": 600
}
],
"x402Version": 1
}
] UPTIME
RESPONSE TIME
30d UPTIME 100%
UPTIME 30D 100%
AVG RESP 344ms
TOTAL CHECKS 12
RECENT CHECKS
TIME STATUS RESP
● OK 300ms
● OK 301ms
● OK 345ms
● OK 307ms
● OK 284ms
● OK 310ms
● OK 415ms
● OK 314ms
● OK 308ms
● OK 310ms
● OK 300ms
● SLOW 630ms
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// Markdown
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