save_session · Adr Skills MCP: Risk & Policy

WHAT IT DOES

What save_session does on Adr Skills

AI agents use save_session to create or update resources in Adr Skills — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Adr Skills environment.

WHY IT NEEDS A POLICY

Why save_session needs a policy

The tool creates or modifies data in a database (a development session record) in a reversible manner. This is a Write operation: it persists data but does not delete, execute code, move money, or trigger external side effects beyond storage.

From the tool's definition Tool description states 'Save a Claude Code development session to the database' — this creates or stores a new record in persistent storage.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

save_session Rate-limited

save_session stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "save_session": {
      "limits": [
        {
          "counter": "save_session_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about save_session

What does the save_session tool do? +

Save a Claude Code development session to the database. It is categorised as a Write tool in the Adr Skills MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on save_session? +

Register the Adr Skills MCP server in PolicyLayer and add a rule for save_session: 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 Adr Skills. Nothing to install.

What risk level is save_session? +

save_session is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit save_session? +

Yes. Add a rate_limit block to the save_session 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 save_session completely? +

Set action: deny in the PolicyLayer policy for save_session. 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 save_session? +

save_session is provided by the Adr Skills MCP server (wooxogh/adr-mcp-setup). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.