---
title: "Lesson statistics for a user."
method: GET
path: "/v1/memories/lessons/stats"
tags: ["Lessons"]
---

# Lesson statistics for a user.

`GET /v1/memories/lessons/stats`

## Query parameters

- `user_id` string, required

## Response `200`

Stats.

- object — Aggregate lesson counts by type.
  - `by_type` object, required
  - `total_active` number, required

## Other responses

- `400` — Input validation error
- `500` — Internal server error
- `502` — Upstream AI provider returned an unrecoverable failure (auth, non-retryable 4xx).
- `503` — Upstream AI provider is rate-limited, quota-exhausted, or returned 5xx; consult `retryable`.

---

[API](https://skmtc.dev/atomicstrata/apis/atomicmemory-http-api.md) · [All operations](https://skmtc.dev/atomicstrata/apis/atomicmemory-http-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/atomicstrata/atomicmemory-http-api/revisions/d501daa39bb2/schema)