set_skills · Claude Team MCP: Risk & Policy

WHAT IT DOES

What set_skills does on Claude Team MCP

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

WHY IT NEEDS A POLICY

Why set_skills needs a policy

The tool modifies agent attributes (skills/capabilities) in the coordination system, which is a write operation. The severity is low because misuse would only affect task assignment logic without direct impact on code, data, or external systems. This is administrative metadata management that can be corrected or undone by declaring different skills.

From the tool's definition Tool description states 'Declare what an agent is good at', indicating it creates or modifies agent skill metadata. The action is reversible and has no destructive, financial, or code execution implications.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_skills Rate-limited

set_skills 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": {
    "set_skills": {
      "limits": [
        {
          "counter": "set_skills_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 Claude Team MCP, so you can run agents against it safely.

FAQ

Questions about set_skills

What does the set_skills tool do? +

Declare what an agent is good at, so the PM can auto-assign matching tasks. It is categorised as a Write tool in the Claude Team MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_skills? +

Register the Claude Team MCP server in PolicyLayer and add a rule for set_skills: 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 Claude Team MCP. Nothing to install.

What risk level is set_skills? +

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

Can I rate-limit set_skills? +

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

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

set_skills is provided by the Claude Team MCP server (lakshan12367/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.