---
id: AUDIT-WP-0002
type: workplan
title: "Pluggable audit backend contract"
domain: infotech
repo: audit-core
status: ready
owner: codex
topic_slug: custodian
created: "2026-06-22"
updated: "2026-06-22"
state_hub_workstream_id: "14725dbf-16ae-43e5-bf52-3f93238cf264"
---

# Pluggable audit backend contract

Define the replaceable audit backend interface beyond the mock JSONL writer and document retention guarantees.

## Author backend interface contract

```task
id: AUDIT-WP-0002-T01
status: todo
priority: high
state_hub_task_id: "588ac6fa-eb41-49ce-8a1c-850d5791de0b"
```

Document `AuditBackend` protocol, event schema, retention policy, and migration path from the mock file backend in `docs/` or module docstrings.