affinity_key_code · Affinity MCP Server MCP: Risk & Policy

WHAT IT DOES

What affinity_key_code does on Affinity MCP Server

AI agents invoke affinity_key_code to trigger actions in Affinity MCP Server. 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 affinity_key_code needs a policy

This tool sends keyboard input (key codes) to the Affinity application via AppleScript/System Events. It triggers external operations in the creative suite whose effects depend on the arguments — for example, sending Delete could remove elements, Return could confirm dialogs, Escape could cancel operations. The actual impact depends on the application state at time of invocation, making this an Execute-category tool.

From the tool's definition Send a key code (Escape=53, Return=36, Delete=51, Tab=48, Left=123, Right=124, Down=125, Up=126)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

affinity_key_code Rate-limited

affinity_key_code 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": {
    "affinity_key_code": {
      "limits": [
        {
          "counter": "affinity_key_code_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 Affinity MCP Server, so you can run agents against it safely.

FAQ

Questions about affinity_key_code

What does the affinity_key_code tool do? +

Send a key code (Escape=53, Return=36, Delete=51, Tab=48, Left=123, Right=124, Down=125, Up=126). It is categorised as a Execute tool in the Affinity MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on affinity_key_code? +

Register the Affinity MCP Server MCP server in PolicyLayer and add a rule for affinity_key_code: 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 Affinity MCP Server. Nothing to install.

What risk level is affinity_key_code? +

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

Can I rate-limit affinity_key_code? +

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

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

affinity_key_code is provided by the Affinity MCP Server MCP server (sekharmalla/affinity-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.