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$1.00 / 1,000 normalized doi metadata

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Crossref DOI Metadata – Clean JSON and CSV

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Paste up to 500 DOIs and get one clean row per unique DOI from the official Crossref API: title, journal, publisher, type, precise date and source link. Duplicates and invalid or unknown DOIs are reported. CSV and JSON output, also callable by AI agents via Apify MCP. No LLM calls.

Pricing

$1.00 / 1,000 normalized doi metadata

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Developer

kalle walle

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5 hours ago

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Education

You can access the Crossref DOI Metadata – Clean JSON and CSV programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

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          "dois": {
            "title": "DOIs",
            "minItems": 1,
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            "description": "One to 500 DOI strings or doi.org resolver URLs. Duplicate DOIs are fetched once.",
            "items": {
              "type": "string",
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          },
          "maxItems": {
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          "includeAuthors": {
            "title": "Include author names",
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            "description": "Explicitly request public author names from Crossref (up to 100 per record). Default output omits personal names.",
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          "requestTimeoutSeconds": {
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            "minimum": 1,
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          },
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            "minimum": 30,
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DOI to Metadata Lookup – Crossref CSV & JSON API OpenAPI definition

OpenAPI is a standard for designing and describing RESTful APIs, allowing developers to define API structure, endpoints, and data formats in a machine-readable way. It simplifies API development, integration, and documentation.

OpenAPI is effective when used with AI agents and GPTs by standardizing how these systems interact with various APIs, for reliable integrations and efficient communication.

By defining machine-readable API specifications, OpenAPI allows AI models like GPTs to understand and use varied data sources, improving accuracy. This accelerates development, reduces errors, and provides context-aware responses, making OpenAPI a core component for AI applications.

You can download the OpenAPI definitions for Crossref DOI Metadata – Clean JSON and CSV from the options below:

OpenAPI.json

If you’d like to learn more about how OpenAPI powers GPTs, read our blog post.

You can also check out our other API clients:

Crossref DOI Metadata – Clean JSON and CSV API in Python

Crossref DOI Metadata – Clean JSON and CSV API in JavaScript

Crossref DOI Metadata – Clean JSON and CSV API through CLI

Crossref DOI Metadata – Clean JSON and CSV API

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