# preview_memory_hygiene

A read tool on the Mapi Agent Memory MCP server.

Agent View of the PolicyLayer registry record for `preview_memory_hygiene`. HTML page: https://policylayer.com/tools/mapi-agent-memory/preview-memory-hygiene

## Facts

- Tool: `preview_memory_hygiene`
- Server: Mapi Agent Memory (`cabo0m/mapi-agent-memory`) — https://policylayer.com/tools/mapi-agent-memory.md
- Homepage: https://github.com/cabo0m/mapi-agent-memory
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "preview_memory_hygiene",
    "arguments": {}
  }
}
```

## Why preview_memory_hygiene is rated Low

The 'preview' prefix typically indicates inspection or querying without side effects. Given the governance/auditable context of the server and the existence of an 'apply' variant, this tool likely retrieves or displays memory hygiene analysis without modifying data. Confidence is moderate (0.7) due to empty description, but the naming pattern strongly suggests a Read operation.

From the tool's own definition: "Tool name 'preview_memory_hygiene' suggests a read-only inspection operation, consistent with 'preview' prefix. Sibling tools include 'apply_memory_hygiene' (which modifies state), distinguishing this as the non-destructive preview variant."

## Use case

AI agents call preview_memory_hygiene to retrieve information from Mapi Agent Memory without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mapi Agent Memory:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "preview_memory_hygiene": {}
  }
}
```

## Other tools on Mapi Agent Memory (251)

- `delete_path` — Destructive — https://policylayer.com/tools/mapi-agent-memory/delete-path.md
- `expire_memory_capture_item` — Destructive — https://policylayer.com/tools/mapi-agent-memory/expire-memory-capture-item.md
- `gemma_worker_cancel_job` — Destructive — https://policylayer.com/tools/mapi-agent-memory/gemma-worker-cancel-job.md
- `rollback_memory_pointer_lifecycle_remediation_execution` — Destructive — https://policylayer.com/tools/mapi-agent-memory/rollback-memory-pointer-lifecycle-remediation-execution.md
- `apply_escalation_reactions` — Execute — https://policylayer.com/tools/mapi-agent-memory/apply-escalation-reactions.md
- `apply_memory_lifecycle_remediation` — Execute — https://policylayer.com/tools/mapi-agent-memory/apply-memory-lifecycle-remediation.md
- `apply_memory_pointer_lifecycle_remediation_execution` — Execute — https://policylayer.com/tools/mapi-agent-memory/apply-memory-pointer-lifecycle-remediation-execution.md
- `backfill_semantic_embeddings` — Execute — https://policylayer.com/tools/mapi-agent-memory/backfill-semantic-embeddings.md
- `gemma_lms_load` — Execute — https://policylayer.com/tools/mapi-agent-memory/gemma-lms-load.md
- `gemma_lms_unload` — Execute — https://policylayer.com/tools/mapi-agent-memory/gemma-lms-unload.md
- `gemma_worker_run_job` — Execute — https://policylayer.com/tools/mapi-agent-memory/gemma-worker-run-job.md
- `gemma_worker_run_task` — Execute — https://policylayer.com/tools/mapi-agent-memory/gemma-worker-run-task.md
- `git_push` — Execute — https://policylayer.com/tools/mapi-agent-memory/git-push.md
- `git_status` — Execute — https://policylayer.com/tools/mapi-agent-memory/git-status.md
- `preview_memory_pointer_lifecycle_remediation_execution_rollback` — Execute — https://policylayer.com/tools/mapi-agent-memory/preview-memory-pointer-lifecycle-remediation-execution-rollback.md
- `preview_undo_run` — Execute — https://policylayer.com/tools/mapi-agent-memory/preview-undo-run.md
- `query_sql` — Execute — https://policylayer.com/tools/mapi-agent-memory/query-sql.md
- `rollback_memory_hygiene_run` — Execute — https://policylayer.com/tools/mapi-agent-memory/rollback-memory-hygiene-run.md
- `rollback_memory_lifecycle_remediation` — Execute — https://policylayer.com/tools/mapi-agent-memory/rollback-memory-lifecycle-remediation.md
- `rollback_memory_supersession_run` — Execute — https://policylayer.com/tools/mapi-agent-memory/rollback-memory-supersession-run.md
- `run_conflicts_v1` — Execute — https://policylayer.com/tools/mapi-agent-memory/run-conflicts-v1.md
- `run_consolidation_v1` — Execute — https://policylayer.com/tools/mapi-agent-memory/run-consolidation-v1.md
- `run_escalation_check` — Execute — https://policylayer.com/tools/mapi-agent-memory/run-escalation-check.md
- `run_powershell` — Execute — https://policylayer.com/tools/mapi-agent-memory/run-powershell.md
- `run_pytest` — Execute — https://policylayer.com/tools/mapi-agent-memory/run-pytest.md
- `run_sandman_ai` — Execute — https://policylayer.com/tools/mapi-agent-memory/run-sandman-ai.md
- `run_sandman_gemma_hygiene` — Execute — https://policylayer.com/tools/mapi-agent-memory/run-sandman-gemma-hygiene.md
- `run_sandman_quality_hygiene` — Execute — https://policylayer.com/tools/mapi-agent-memory/run-sandman-quality-hygiene.md
- `run_sandman_v1` — Execute — https://policylayer.com/tools/mapi-agent-memory/run-sandman-v1.md
- `run_workshop_action` — Execute — https://policylayer.com/tools/mapi-agent-memory/run-workshop-action.md
- …and 221 more: https://policylayer.com/tools/mapi-agent-memory.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=mapi-agent-memory · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/mapi-agent-memory