coord_claim_paths · Session Coord MCP: Risk & Policy

WHAT IT DOES

What coord_claim_paths does on Session Coord

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

WHY IT NEEDS A POLICY

Why coord_claim_paths needs a policy

This tool writes/reserves ownership of repository paths for a session, modifying coordination state. It's a Write operation (claiming/reserving paths) rather than purely reading, but not destructive since claims can be released. Misuse could block other sessions from accessing paths, giving it medium severity.

From the tool's definition Claim one or more repository paths for editing or coordination

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

coord_claim_paths Rate-limited

coord_claim_paths 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": {
    "coord_claim_paths": {
      "limits": [
        {
          "counter": "coord_claim_paths_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 Session Coord, so you can run agents against it safely.

FAQ

Questions about coord_claim_paths

What does the coord_claim_paths tool do? +

Claim one or more repository paths for editing or coordination. It is categorised as a Write tool in the Session Coord MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on coord_claim_paths? +

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

What risk level is coord_claim_paths? +

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

Can I rate-limit coord_claim_paths? +

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

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

coord_claim_paths is provided by the Session Coord MCP server (lingfeng-vels/session-coord-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.