Marketplace · API · x402

citepulse.theaslangroupllc.com/api/ref-check

Bibliography verification for AI research agents — POST up to 20 citations (DOIs or free-text references) and get a per-reference verdict: exists/not-found, retracted/withdrawn (Crossref + Retraction Watch + OpenAlex), and title/author/year mismatches against a real record. Built for agents auditing LLM-generated bibliographies before a citation ships.

Endpoint	`https://citepulse.theaslangroupllc.com/api/ref-check`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~276 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc
method	GET
last updated	2026-10-16T09:18:17.597Z

Use it

Call it (an x402 client pays automatically)

curl -i https://citepulse.theaslangroupllc.com/api/ref-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-a6cd25acee62a127

Search the whole marketplace from your agent (MCP)

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