the402 endpoint detail

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freshproof-api-mainnet.up.railway.app v1 agent-safe-read

https://freshproof-api-mainnet.up.railway.app/v1/agent-safe-read

payable

Retrieve a public webpage as sanitized Markdown with prompt injection detection, hidden-instruction, tool-coercion and URL-exfiltration risk assessment. Protect agent context and inspect untrusted webpage or MCP output before model memory or action planning.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0x79f29Dade1df4889357817a797516615a918Ade2
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
351 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:17:47.740Z (4d ago)
Category
web-scraping

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Ffreshproof-api-mainnet.up.railway.app%2Fv1%2Fagent-safe-read"