GET /api/hierarchy_entries/1.0/{id}.json

eol.org:encyclopedia-of-life-api

Summary: Get hierarchy entry
Operation ID: getHierarchyEntry
Auth: none

Retrieve detailed taxonomic hierarchy information for a specific hierarchy entry. This endpoint returns the full taxonomic classification including ancestors (higher ranks), parent-child relationships, scientific name, rank information, and data source. Use this when you need to understand where a species sits in the taxonomic tree or to traverse up/down the classification hierarchy from a specific entry point.

Original spec description

Retrieve taxonomic hierarchy information for a specific hierarchy entry ID, including ancestors, parent-child relationships, and classification data.

Usage Tips

- The `id` parameter is the hierarchy entry ID (different from the EOL page ID) - Response includes `ancestors` array showing the full taxonomic path (kingdom to species) - The `children` array shows subordinate taxa if any exist - `taxonRank` field indicates the taxonomic level (species, genus, family, etc.) - `source` provides a direct link to the EOL page for this taxon - `nameAccordingTo` shows which data provider contributed this classification

Parameters (1)

id (integer, path, required)

Hierarchy entry ID

Examples (1)

TitleTypeURLAction
Get hierarchy entry openapi-spec https://api.eol.org/api/hierarchy_entries/1.0/13332535.json

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-03-23 09:11:55.818400 200 566ms