---
title: "Per-memory version history."
method: GET
path: "/v1/memories/{id}/audit"
tags: ["Audit"]
---

# Per-memory version history.

`GET /v1/memories/{id}/audit`

## Path parameters

- `id` string, uuid, required

## Query parameters

- `user_id` string, required

## Response `200`

Audit trail.

- object — Full version trail for a single memory.
  - `memory_id` string, required
  - `trail` object[], required
    - `actor_model` string, nullable, required
    - `claim_id` string, required
    - `content` string, required
    - `content_hash` string, required — Stable, content-addressable SHA-256 (hex) of this version's content computed as sha256("radar-claim-version-content:v1\n" + content). Deterministic — identical content yields the same hash — so a downstream caller audit chain can anchor to a specific claim version. Not a chain hash.
    - `contradiction_confidence` number, nullable, required
    - `memory_id` string, nullable, required
    - `mutation_reason` string, nullable, required
    - `mutation_type` 'add' | 'update' | 'supersede' | 'delete' | 'clarify' | 'null', nullable, required
    - `previous_version_id` string, nullable, required
    - `superseded_by_version_id` string, nullable, required
    - `valid_from` string, required
    - `valid_to` string, nullable, required
    - `version_id` string, required
  - `version_count` 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`.

## Changes

- **2026-07-17** `d501daa39bb2` — 1 info
  - added the required property `trail/items/content_hash` to the response with the `200` status
- **2026-05-18** `457c8928e1ab` — 1 breaking
  - removed the required property `trail/items/content_hash` from the response with the `200` status

[Change history](https://skmtc.dev/atomicstrata/apis/atomicmemory-http-api/changes/v1/memories/:id/audit/get.md)

---

[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)