---
title: "A/B variant performance"
method: GET
path: "/broadcasts/{id}/variant-stats"
tags: ["Broadcasts"]
---

# A/B variant performance

`GET /broadcasts/{id}/variant-stats`

## Request

- Base URL: `https://api.poststack.dev`
- URL: `https://api.poststack.dev/broadcasts/{id}/variant-stats`
- Auth: one of:
  - HTTP bearer
  - OAuth 2
    - Authorization code: `https://poststack.dev/oauth/authorize`
    - Token URL: `https://poststack.dev/oauth/token`
- TypeScript: <https://skmtc.dev/poststack/apis/poststack-api/docs/broadcasts/:id/variant-stats/get.ts> (a function with typed inputs; its response is checked against the schema)

## Path parameters

- `id` string, required

## Response `200`

Stats.

- BroadcastVariantStats
  - `variants` object[], required
    - `id` integer
    - `name` string
    - `subject` string
    - `weight` integer
    - `recipientCount` integer
    - `deliveredCount` integer
    - `openedCount` integer
    - `clickedCount` integer
    - `bouncedCount` integer
    - `openRate` number
    - `clickRate` number
  - `winnerVariantId` integer, nullable

## Other responses

- `400`: Validation failed — `error` names each offending field (`field: message`).
- `401`: Missing, malformed or unknown credentials (`WWW-Authenticate: Bearer …` is set).
- `403`: The credential lacks the `broadcasts:read` scope (body `{ error: "insufficient_scope", required, missing }`), or the team is suspended.
- `404`: No such resource on this team.
- `422`: The broadcast has no A/B test.

## Changes

- **2026-09-30** `4dc1e20989c8`: 15 warning
  - added the new `daily_limit_exceeded` enum value to the `anyOf[#/components/schemas/Error]/code` response property for the response status `403`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `400`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `401`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `404`
  - …11 more
- **2026-09-29** `ef5b22b98333`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/poststack/apis/poststack-api/changes/broadcasts/:id/variant-stats/get.md)

---

[API](https://skmtc.dev/poststack/apis/poststack-api.md) - [All operations](https://skmtc.dev/poststack/apis/poststack-api/llms.txt) - [OpenAPI document](https://skmtc.dev/poststack/apis/poststack-api/revisions/0d3971e3a670?raw)