IUCN

API

API for IUCN Red List of Threatened Species Data

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Overview

The IUCN API provides access to the Red List of Threatened Species, offering endpoints for species threat status (e.g., Critically Endangered, Vulnerable), habitat details, distribution ranges, and population trends. Responses are in JSON format. Use cases include conservation research, building educational apps about endangered species, integrating wildlife data into environmental monitoring tools, and supporting biodiversity impact assessments for projects. It enables developers to retrieve up-to-date information on over 150,000 species to drive conservation-focused applications.

Example Integration (JavaScript)

script.js JS

fetch('http://apiv3.iucnredlist.org/api/v3/docs')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

  • RESTful Architecture
  • JSON Response Format
  • Species Threat Status Lookup
  • Habitat & Distribution Data
  • Population Trend Information
  • Requires API Key

Frequently Asked Questions

? Is the IUCN API free to use?

Yes, the API is free for non-commercial purposes such as conservation research, education, and non-profit projects. Commercial use requires contacting IUCN for licensing.

? Does the IUCN API require an API key?

Yes, you need to register for an API key via the IUCN Red List website to authenticate requests and access the API endpoints.

? What is the response format of the IUCN API?

All responses from the IUCN API are in JSON format, which is widely supported and easy to integrate into applications, tools, or research workflows.

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Tool Info

Pricing Free
Category Animals
Platform Public API

Pros

  • Trusted Global Conservation Data Source
  • Covers 150k+ Species
  • Well-Documented Endpoints
  • Supports Non-Commercial Conservation Projects

Cons

  • Rate Limits Apply
  • Commercial Use Requires Licensing
  • Some Species Data May Be Incomplete
  • API Key Registration Mandatory

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