---
title: "Get assay annotations by AEID"
method: GET
path: "/bioactivity/assay/search/by-aeid/{aeid}"
tags: ["Bioactivity Assay Resource"]
---

# Get assay annotations by AEID

`GET /bioactivity/assay/search/by-aeid/{aeid}`

return assay annotations by ToxCast assay component endpoint ID (AEID) based on the specified projection. Available projections: ccd-assay-annotation, ccd-assay-gene, ccd-assay-citations, ccd-assay-tcpl, ccd-assay-reagents, assay-all. If no projection is specified, the full view of assay annotations will be returned by default.

## Path parameters

- `aeid` integer, required

## Query parameters

- `projection` string

---

[API](https://skmtc.net/usepa/apis/computational-toxicology-and-exposure-ctx-apis-ctx-bioactivi.md) · [All operations](https://skmtc.net/usepa/apis/computational-toxicology-and-exposure-ctx-apis-ctx-bioactivi/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/usepa/computational-toxicology-and-exposure-ctx-apis-ctx-bioactivi/revisions/a5153acdeecb/schema)