x402 List

x402 Protocol Service Directory

Heron

AI

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%
BASE URL https://heronapp.io WEBSITE https://heronapp.io ENDPOINTS 1 NETWORK Base ASSET USDC MEMBER SINCE 02 Jul 2026 MONITORED SINCE 02 Jul 2026

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
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

07-02 · uptime 100.0% · 348ms avg07-0207-02
RESPONSE TIME
07-02 · 348ms avg07-02 · 348ms avg07-0207-02
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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