---
title: "Changes to Get child nodes, and optionally parent nodes, for a given taxon by Taxonomy ID"
method: GET
path: "/taxonomy/taxon/{tax_id}/related_ids"
---

# Changes to Get child nodes, and optionally parent nodes, for a given taxon by Taxonomy ID

`GET /taxonomy/taxon/{tax_id}/related_ids`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 3 of 13 revisions.

- **2026-08-06** `e5d4400c8e5d`: 1 warning
- **2025-04-28** `f08be9b66e16`: 4 info
- **2025-02-08** `00bdccfc6283`: 1 info

## Changes

- **2026-08-06** `e5d4400c8e5d`: 1 warning
  - deleted the `query` request parameter `include_subtree`
- **2025-04-28** `f08be9b66e16`: 4 info
  - added the enum value `ACELLULAR_ROOT` to the property `items/` of the `query` request parameter `ranks`
  - added the enum value `CELLULAR_ROOT` to the property `items/` of the `query` request parameter `ranks`
  - added the enum value `DOMAIN` to the property `items/` of the `query` request parameter `ranks`
  - added the enum value `REALM` to the property `items/` of the `query` request parameter `ranks`
- **2025-02-08** `00bdccfc6283`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/ncats/apis/ncbi-datasets-api/docs/taxonomy/taxon/:tax_id/related_ids/get.md) - [API](https://skmtc.dev/ncats/apis/ncbi-datasets-api.md) - [Page](https://skmtc.dev/ncats/apis/ncbi-datasets-api/changes/taxonomy/taxon/:tax_id/related_ids/get)