the402 endpoint detail

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api.relayshield.net payg mcp-registry-risk

https://api.relayshield.net/v1/payg/mcp-registry-risk

answers 402

Assess an MCP server URL for supply-chain and registry risk before your agent connects to it or grants it tool-calling access — flags unverified publishers, known-malicious servers, and other trust signals. Call before an autonomous agent adds a new MCP server to its toolset.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.35
Network
base
Pay to
0x002CfD89c5636F45E3C8576D6E35154748412bAc
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
205 ms
Payment options
2 usable of 2
Last checked
2026-09-06T01:18:00.465Z (2h ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.relayshield.net%2Fv1%2Fpayg%2Fmcp-registry-risk"