Marketplace · API · x402

apiacre.com/v1/research/crossref-work-search

Search open Crossref bibliographic metadata by title, author, DOI fragment, or citation and return bounded normalized publication, author, citation, license, and update metadata without abstracts or full text.

Endpoint	`https://apiacre.com/v1/research/crossref-work-search`
Trust	100% uptime over 1 checks · ~180 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	0xa0BFa4f07281c9b248DC3AED2217836BcA24869B
method	POST
last updated	2026-10-29T12:37:25.69Z

Use it

Call it (an x402 client pays automatically)

curl -i https://apiacre.com/v1/research/crossref-work-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-c5b60cf611cd71e4

Search the whole marketplace from your agent (MCP)

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