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Compare/research.doi

Research: DOI lookup

Resolve a DOI to bibliographic metadata. 1 provider, 1 working now.

At a glance

1 of 1 provider for Research DOI lookup on Superpowers can serve a call right now: Crossref. Crossref is free with any Superpowers account. Call it with one API key: POST /v1/run with "tool": "crossref.lookup-doi", or through the MCP server. Every provider takes the same input and returns the same output, and failed calls are not charged.

ProviderPriceSuccessSpeedStatus
DOI metadata lookup (Crossref)CrossrefFree100%1.2sLive

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Shared format

Input
{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "doi"
  ],
  "properties": {
    "doi": {
      "type": "string",
      "pattern": "^10\\.[0-9]{4,9}/[^\\s]+$",
      "maxLength": 200
    }
  }
}
Normalized output
{
  "doi": "",
  "title": "",
  "authors": [],
  "year": 0,
  "url": ""
}

Questions

Which Research DOI lookup API is cheapest?

Crossref is free with any Superpowers account.

Is there a free Research DOI lookup API?

Yes. Crossref is free with any Superpowers account; you only need a key.

How do I call a Research DOI lookup API from an AI agent?

Call it with one API key: POST /v1/run with "tool": "crossref.lookup-doi", or through the MCP server. Every provider takes the same input and returns the same output, and failed calls are not charged. New accounts get $5 free; see /docs for the MCP setup.