---
title: "Post Annotate"
method: POST
path: "/v3/api/annotate"
tags: ["text_annotation"]
---

# Post Annotate

`POST /v3/api/annotate`

## Request body

- TextAnnotationRequest
  - `content` string, required
  - `prefix` string[], nullable
  - `category` EntityCategory[], nullable

## Response `200`

Successful Response

- string

## Other responses

- `404` — Not Found
- `422` — Validation Error

## Changes

> 3 revisions in range; 1 could not be searched.

- **2026-07-26** `1dd6862950fc` — 2 info
  - added the new optional request property `category`
  - added the new optional request property `prefix`

[Change history](https://skmtc.dev/monarchinitiative/apis/fastapi/changes/v3/api/annotate/post.md)

---

[API](https://skmtc.dev/monarchinitiative/apis/fastapi.md) · [All operations](https://skmtc.dev/monarchinitiative/apis/fastapi/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/monarchinitiative/fastapi/revisions/2ceb106a8c03/schema)