session-sql · Awslabs Valkey MCP: Risk & Policy

WHAT IT DOES

What session-sql does on Awslabs Valkey

AI agents invoke session-sql to trigger actions in Awslabs Valkey. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why session-sql needs a policy

The name 'session-sql' strongly implies executing SQL or SQL-like commands against a database/cache instance. Given the server is for Valkey (a Redis-compatible in-memory data store), this tool likely runs queries or commands that could read, write, or destructively modify data depending on arguments.

From the tool's definition Tool name 'session-sql' suggests execution of SQL queries within a session context on a Valkey/ElastiCache instance. Description is empty, which reduces confidence.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

session-sql Rate-limited

session-sql stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "session-sql": {
      "limits": [
        {
          "counter": "session-sql_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Awslabs Valkey, so you can run agents against it safely.

FAQ

Questions about session-sql

What does the session-sql tool do? +

session-sql. It is categorised as a Execute tool in the Awslabs Valkey MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on session-sql? +

Register the Awslabs Valkey MCP server in PolicyLayer and add a rule for session-sql: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Awslabs Valkey. Nothing to install.

What risk level is session-sql? +

session-sql is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit session-sql? +

Yes. Add a rate_limit block to the session-sql rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block session-sql completely? +

Set action: deny in the PolicyLayer policy for session-sql. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides session-sql? +

session-sql is provided by the Awslabs Valkey MCP server (awslabs.valkey-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.