DOI Resolver

Resolve a DOI to its publication details: title, authors, journal, publisher, date, volume and pages, ISSN, licence and citation count. Covers datasets too.

Pay by wallet (x402) doi-resolve

Example

Input

{
  "doi": "10.1038/nature12373"
}

Answer

{
  "doi": "10.1038/nature12373",
  "url": "https://doi.org/10.1038/nature12373",
  "issn": [
    "0028-0836"
  ],
  "type": "journal-article",
  "issue": "7460",
  "pages": "54-58",
  "title": "Nanometre-scale thermometry in a living cell",
  "volume": "500",
  "authors": [
    "G. Kucsko",
    "P. C. Maurer"
  ],
  "abstract": null,
  "language": "en",
  "published": "2013-07-31",
  "publisher": "Springer Science and Business Media LLC",
  "license_url": "http://www.springer.com/tdm",
  "container_title": "Nature",
  "reference_count": 30,
  "referenced_by_count": 1815,
  "registration_agency": "Crossref"
}

Inputs

Field	Type	Required	What it is
`doi`	string	Yes	A bare DOI (10.1038/nature12373), a doi: prefixed string, or any doi.org URL

Output fields

How reliably each field appears in a successful answer.

Field	Type	Appears
`doi`	string	Always (present in every successful answer)
`url`	string	Always (present in every successful answer)
`title`	string	Usually (present for most inputs)
`authors`	array	Always (present in every successful answer)
`referenced_by_count`	number	Usually (present for most inputs)
`registration_agency`	string	Always (present in every successful answer)
`issn`	—	Always (present in every successful answer)
`type`	—	Usually (present for most inputs)
`container_title`	—	Usually (present for most inputs)
`publisher`	—	Usually (present for most inputs)
`published`	—	Usually (present for most inputs)
`reference_count`	—	Usually (present for most inputs)
`volume`	—	Sometimes (present only for some inputs)
`issue`	—	Sometimes (present only for some inputs)
`pages`	—	Sometimes (present only for some inputs)
`abstract`	—	Sometimes (present only for some inputs)
`language`	—	Sometimes (present only for some inputs)
`license_url`	—	Sometimes (present only for some inputs)

How to call it

The same tool through each route. MCP clients reach it through Strale’s server at https://api.strale.io/mcp; the call below is what the agent sends.

# Needs an API key. max_price_cents caps what this call may cost.
curl -X POST https://api.strale.io/v1/do \
  -H "Authorization: Bearer $STRALE_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
    "capability_slug": "doi-resolve",
    "inputs": {
      "doi": "10.1038/nature12373"
    },
    "max_price_cents": 2
  }'

{
  "tool": "strale_execute",
  "arguments": {
    "slug": "doi-resolve",
    "inputs": {
      "doi": "10.1038/nature12373"
    },
    "max_price_cents": 2
  }
}

import { Strale } from "straleio";

const strale = new Strale({ apiKey: process.env.STRALE_API_KEY! });
const result = await strale.do({
  capability_slug: "doi-resolve",
  inputs: {
    "doi": "10.1038/nature12373"
  },
  max_price_cents: 2,
});

import os
from straleio import Strale, DoRequest

strale = Strale(api_key=os.environ["STRALE_API_KEY"])
result = strale.do(DoRequest(
    capability_slug="doi-resolve",
    inputs={
        "doi": "10.1038/nature12373",
    },
    max_price_cents=2,
))

# No account. The first request answers 402 with the price in USDC;
# an x402 client pays it from your wallet and repeats the request.
curl -i -X POST https://api.strale.io/x402/v2/doi-resolve \
  -H 'Content-Type: application/json' \
  -d '{
    "doi": "10.1038/nature12373"
  }'

Limitations

Two registration agencies of the eleven that exist
Crossref and DataCite together register the large majority of DOIs, but mEDRA, JaLC, KISTI, Airiti and the EU Publications Office run their own. A DOI registered with one of those resolves at doi.org but returns not-registered here.
Metadata is only as complete as the publisher's deposit
Metadata reflects the publisher’s deposit. Abstracts, licences, ORCIDs and page ranges are optional and can be absent even for major journals.
DataCite records are thinner than Crossref records
The DataCite fallback path returns title, publisher, year, creators and type. Journal-specific fields (container title, volume, issue, pages, ISSN) are null because dataset DOIs do not carry them.
Citation count is Crossref's, not a consensus figure
`referenced_by_count` counts citations from works deposited at Crossref. Other citation indexes can report different totals for the same paper.
What to do instead: Call [withdrawn] for the OpenAlex figure and the citing works themselves.