---
title: "POST /tracer/observation-span/add_annotations/"
method: POST
path: "/tracer/observation-span/add_annotations/"
tags: ["tracer"]
---

# POST /tracer/observation-span/add_annotations/

`POST /tracer/observation-span/add_annotations/`

## Request

- Base URL: `http://localhost:8000`
- URL: `http://localhost:8000/tracer/observation-span/add_annotations/`
- Auth: one of:
  - API key in header `X-Api-Key`
  - API key in header `X-Secret-Key`

## Request body

- AddObservationSpanAnnotations
  - `observation_span_id` string
  - `trace_id` string, uuid
  - `annotation_values` object, required
  - `notes` string

## Response `201`

Created

- AddObservationSpanAnnotations
  - `observation_span_id` string
  - `trace_id` string, uuid
  - `annotation_values` object, required
  - `notes` string

## Other responses

- `default`: Default error response

---

[API](https://skmtc.dev/futureagi/apis/future-agi-management-api.md) · [All operations](https://skmtc.dev/futureagi/apis/future-agi-management-api/llms.txt) · [OpenAPI document](https://skmtc.dev/futureagi/apis/future-agi-management-api/revisions/c8684118e142?raw)