save_decision · Coord MCP: Risk & Policy

WHAT IT DOES

What save_decision does on CoordMCP

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

WHY IT NEEDS A POLICY

Why save_decision needs a policy

This tool creates or modifies decision records in shared memory, which is a reversible write operation. It does not delete data (Destructive), execute arbitrary code (Execute), move money (Financial), or merely read data (Read).

From the tool's definition The tool name 'save_decision' indicates it persists decision data to shared memory. In the context of a coordination server managing multi-agent collaboration, this creates or modifies decision tracking records that other agents rely on.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

save_decision Rate-limited

save_decision 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_decision": {
      "limits": [
        {
          "counter": "save_decision_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 CoordMCP, so you can run agents against it safely.

FAQ

Questions about save_decision

What does the save_decision tool do? +

save_decision. It is categorised as a Write tool in the CoordMCP 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_decision? +

Register the Coord MCP server in PolicyLayer and add a rule for save_decision: 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 CoordMCP. Nothing to install.

What risk level is save_decision? +

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

Can I rate-limit save_decision? +

Yes. Add a rate_limit block to the save_decision 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_decision completely? +

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

save_decision is provided by the Coord MCP server (siddiquesahabaj/coordmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.