# read_from_memory

Reads the user

Agent View of the PolicyLayer registry record for `read_from_memory`. HTML page: https://policylayer.com/tools/3mdistal-css-mcp-server/read-from-memory

## Facts

- Tool: `read_from_memory`
- Server: Css Tutor (`3mdistal/css-mcp-server`) — https://policylayer.com/tools/3mdistal-css-mcp-server.md
- Homepage: https://github.com/3mdistal/css-mcp-server
- Risk category: Read (Low risk)
- Registry record: grade B, 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": "read_from_memory",
    "arguments": {}
  }
}
```

## Why read_from_memory is rated Low

This tool retrieves stored user data (knowledge state, preferences, history) from memory without modifying it. Reading user state is essential for providing personalized tutoring and poses no risk of data loss, financial impact, or unintended execution. The low severity reflects that misuse would only expose already-stored user information rather than cause damage.

From the tool's own definition: "Tool name is 'read_from_memory' and description indicates it 'Reads the user' - a retrieval operation with no modification or side effects."

## Use case

AI agents call read_from_memory to retrieve information from Css Tutor 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 Css Tutor:

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

## Other tools on Css Tutor (2)

- `get_latest_updates` — Read — https://policylayer.com/tools/3mdistal-css-mcp-server/get-latest-updates.md
- `write_to_memory` — Write — https://policylayer.com/tools/3mdistal-css-mcp-server/write-to-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=3mdistal-css-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/3mdistal-css-mcp-server