Marketplace · API · x402

agentsvc.io/api/v1/proxy/paper-search

Search scientific papers across OpenAlex (250M works, all fields), arXiv (preprints) and PubMed (biomedicine) in one call. Returns title, up to 5 authors, year, venue, DOI, landing URL, open-access PDF URL, citation count and abstract (up to 600 chars), merged and deduplicated by DOI. Params: query (required), source ('all' default, 'openalex', 'arxiv', 'pubmed'), limit (1 to 25, default 10), year_from, open_access_only (default false).

Endpoint	`https://agentsvc.io/api/v1/proxy/paper-search`
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	0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27
method	POST
last updated	2026-10-27T10:05:40.243Z

Use it

Call it (an x402 client pays automatically)

curl -i https://agentsvc.io/api/v1/proxy/paper-search
# 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/x402-2706d1d0be5404f0

Search the whole marketplace from your agent (MCP)

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