---
title: "Record experiment assignment"
method: POST
path: "/api/experiments/assignments"
tags: ["experiments"]
---

# Record experiment assignment

`POST /api/experiments/assignments`

## Request body

- RecordAssignmentRequest
  - `experiment_key` string, required
  - `variant` string, required
  - `source` 'posthog' | 'launchdarkly' | 'backend'

## Response `200`

Successful Response

- ExperimentAssignment
  - `experiment_key` string, required
  - `variant` string, required
  - `source` string, required
  - `assigned_at` string, date-time, required

## Other responses

- `401` — Authentication required
- `422` — Validation Error

## Changes

- **2026-09-12** `a8f415ca28ec` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/significant-gravitas/apis/autogpt-agent-server/changes/api/experiments/assignments/post.md)

---

[API](https://skmtc.dev/significant-gravitas/apis/autogpt-agent-server.md) · [All operations](https://skmtc.dev/significant-gravitas/apis/autogpt-agent-server/llms.txt) · [OpenAPI document](https://skmtc.dev/significant-gravitas/apis/autogpt-agent-server/revisions/9a062c6d49b5?raw)