# preview_memory_supersession

Preview guarded Memory v3 supersession without mutating data.

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

## Facts

- Tool: `preview_memory_supersession`
- 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_supersession",
    "arguments": {}
  }
}
```

## Why preview_memory_supersession is rated Low

This tool performs a read-only preview operation. The key phrase 'without mutating data' confirms there are no side effects—it retrieves or displays information about a potential memory supersession scenario without actually applying changes. This falls squarely into the Read category with low severity since it poses minimal risk even if invoked by an AI agent.

From the tool's own definition: "The description explicitly states 'Preview...without mutating data,' indicating this tool queries or displays information about memory supersession without creating, modifying, or deleting any data."

## Use case

AI agents call preview_memory_supersession 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_supersession": {}
  }
}
```

## 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