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Encyclopedia of Life

Science Data No key

AuthenticationNo key
Rate limitNo published numeric quota; keep requests modest per their usage guidance.

Documentation: eol.org ยท Checked Sep 13, 2026

About

The Encyclopedia of Life (EOL) aggregates species information from hundreds of partners into pages for nearly every known organism. Its classic APIs are free with no key and return taxonomy, images, articles, and conservation data. A newer structured-data API for ecological traits requires a free key, which you can request through their data-services page.

Details

No key needed. You can call it right away.

Auth: No key

Rate limit: No published numeric quota; keep requests modest per their usage guidance.

Verified: 2026-09-13

Best for: personal developer fun

Read the docs Back to catalog

Setup

  1. Paste the example URL into your browser to search species instantly, no signup needed.
  2. Use the returned taxon ID with the pages endpoint to get full species details.
  3. Read the data-services page for media, text, and trait endpoints.
  4. If you need the structured trait API, request a free key via the instructions on that page.
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