---
type: reference
status: active
created: {{DATE}}
updated: {{DATE}}
tags: [agent, system, marker]
agent_written: true
source_notes: []
schema_version: 4
bootstrapped: {{DATE}}
managed_by: echo-memory-plugin
---

# ECHO Vault Marker

This file marks the vault as bootstrapped by the **echo-memory plugin** and records its schema version. The plugin's loading procedure GETs this file as its "is this vault set up?" probe; a `404` triggers a fresh bootstrap.

- `schema_version` — bumped by the plugin when the vault layout changes; a mismatch is the hook for a migration pass (see `references/bootstrap.md`).
- Do not hand-edit. The plugin owns this file.
