# memory

A read tool on the Claude Engram MCP server.

Agent View of the PolicyLayer registry record for `memory`. HTML page: https://policylayer.com/tools/20alexl-claude-engram/memory

## Facts

- Tool: `memory`
- Server: Claude Engram (`20alexl/claude-engram`) — https://policylayer.com/tools/20alexl-claude-engram.md
- Homepage: https://github.com/20alexl/claude-engram
- Risk category: Read (Low risk)
- Registry record: grade D, 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": "memory",
    "arguments": {}
  }
}
```

## Why memory is rated Low

Although the description is empty, the naming and server context strongly indicate this tool retrieves memory data from the session history. The server explicitly describes mining, tracking, and searching—all read operations. No evidence suggests data modification, deletion, or execution of external operations. However, lowered confidence (0.6 rather than 0.8+) due to the lack of an explicit tool description.

From the tool's own definition: "Tool named 'memory' on a server described as providing 'persistent memory and session intelligence' that 'auto-tracks mistakes, decisions, and context' and 'mines your full session history for patterns, predictions, and cross-session search.' The empty…"

## Use case

AI agents call memory to retrieve information from Claude Engram 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 Claude Engram:

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

## Other tools on Claude Engram (15)

- `audit_batch` — Read — https://policylayer.com/tools/20alexl-claude-engram/audit-batch.md
- `claude_engram_status` — Read — https://policylayer.com/tools/20alexl-claude-engram/claude-engram-status.md
- `context` — Read — https://policylayer.com/tools/20alexl-claude-engram/context.md
- `convention` — Read — https://policylayer.com/tools/20alexl-claude-engram/convention.md
- `deps_map` — Read — https://policylayer.com/tools/20alexl-claude-engram/deps-map.md
- `file_summarize` — Read — https://policylayer.com/tools/20alexl-claude-engram/file-summarize.md
- `find_similar_issues` — Read — https://policylayer.com/tools/20alexl-claude-engram/find-similar-issues.md
- `impact_analyze` — Read — https://policylayer.com/tools/20alexl-claude-engram/impact-analyze.md
- `pre_edit_check` — Read — https://policylayer.com/tools/20alexl-claude-engram/pre-edit-check.md
- `scope` — Read — https://policylayer.com/tools/20alexl-claude-engram/scope.md
- `scout_search` — Read — https://policylayer.com/tools/20alexl-claude-engram/scout-search.md
- `session_end` — Read — https://policylayer.com/tools/20alexl-claude-engram/session-end.md
- `session_mine` — Read — https://policylayer.com/tools/20alexl-claude-engram/session-mine.md
- `session_start` — Read — https://policylayer.com/tools/20alexl-claude-engram/session-start.md
- `work` — Read — https://policylayer.com/tools/20alexl-claude-engram/work.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=20alexl-claude-engram · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/20alexl-claude-engram