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AgentDiet Paywall Scanner
x402
AgentDiet Paywall Scanner is a paid API for AI agents from mcp-gateway.agentdiet.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).
Scans a given HTTP URL to detect and analyze x402/L402 paywall configurations and payment requirements
Price / call$0.01
Success—
StatusUnknown
How this service works
Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.
Output
Returns a JSON object with a status field ('ok'), a data object containing paywall detection details, and a roi_proof object showing a compression ratio (e.g. 91.4%), indicating how much metadata was distilled from the scanned URL's payment configuration.
Example use cases
Detecting paywall before agent invocation
“Before my agent tries to call https://api.someservice.com/v1/results, can you check whether it's behind an x402 paywall and what it would cost to access?”
Auditing x402 API catalog
“I'm building a catalog of x402-enabled APIs — can you scan https://mcp-gateway.agentdiet.dev/v1/search with a GET request and tell me if it requires payment and what the paywall config looks like?”
Verifying payment gate on new endpoint
“I just deployed a new API endpoint at https://myapp.io/api/premium-data and want to confirm the x402 paywall is correctly set up — can you run a paywall scan on it using GET?”
Technical details
Endpoint
GEThttps://mcp-gateway.agentdiet.dev/v1/paywall-scanner?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically detect whether a specific URL is protected by an x402, L402, or similar micropayment paywall before attempting to call it. Prefer this over manual inspection when building agent workflows that must dynamically discover payment requirements at runtime, or when auditing a set of API endpoints for payment-gate compliance.
Side effects
- URL is unreachable or times out — may return error status
- URL does not implement x402/L402 — returns empty or null paywall data
- Invalid or missing URL parameter — schema validation error
- Target URL returns non-standard 402 response that cannot be parsed
- Rate limiting or network errors from the target endpoint
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {},
"status": "ok",
"roi_proof": {
"compression_ratio_pct": 91.4
}
}
}Tags
x402
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