Marketplace · API · x402

entropia.petrasynthetic.com/v1/agent-check

Due diligence on an ERC-8004 agent before you pay it or call it: live services and their health, metadata completeness, onchain feedback count and score, wallet activity, concrete red flags, and a usable/caution/avoid verdict with a 0-100 score. Call it when you must decide whether another agent is safe to transact with. Params: chain (default 8453) and agent_id (ERC-8004 token id).

Endpoint	`https://entropia.petrasynthetic.com/v1/agent-check`
Trust	Not checked yet
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0xFc4f1119794DeAD15502AfAdb8c0069092e54e5f
method	GET
last updated	2026-11-09T23:18:41.232Z

Use it

Call it (an x402 client pays automatically)

curl -i https://entropia.petrasynthetic.com/v1/agent-check
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-89810394b1129c23

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}