---
title: "Turn-depth summary (avg / single-turn rate / quantiles)"
method: GET
path: "/v1/analytics/sessions/turn-depth"
tags: ["analytics"]
---

# Turn-depth summary (avg / single-turn rate / quantiles)

`GET /v1/analytics/sessions/turn-depth`

## Query parameters

- `start_date` string, date, required
- `end_date` string, date, required

## Response `200`

Successful Response

- TurnDepthRow[]
  - `total_sessions` integer, required
  - `avg_turns_per_session` number, required
  - `single_turn_rate_pct` number, required
  - `p50_turns` number, required
  - `p90_turns` number, required
  - `p95_turns` number, required

## Other responses

- `400` — Bad request
- `401` — Authentication required
- `422` — Validation Error

## Changes

- **2026-08-12** `5a5597ebb2d6` — 4 info
  - added the optional property `retry_after` to the response with the `400` status
  - added the optional property `retry_after` to the response with the `401` status
  - added the optional property `retryable` to the response with the `400` status
  - added the optional property `retryable` to the response with the `401` status

[Change history](https://skmtc.dev/oneloop-hq/apis/feather-api/changes/v1/analytics/sessions/turn-depth/get.md)

---

[API](https://skmtc.dev/oneloop-hq/apis/feather-api.md) · [All operations](https://skmtc.dev/oneloop-hq/apis/feather-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/oneloop-hq/feather-api/revisions/9cd7291d4228/schema)