app_attach

Connect to a running Altium Designer instance.

SERVERAltium-MCP-Suite SOURCEM-R-Abedini/Altium-MCP-Suite

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/altium-mcp-suite/app-attach.md

WHAT IT DOES

What app_attach does on Altium-MCP-Suite

AI agents invoke app_attach to trigger actions in Altium-MCP-Suite. 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.

RISK

Why app_attach is rated High

This tool initiates a connection to an external application (Altium Designer), which is an external operation that establishes a persistent bridge. It doesn't merely read data or write data reversibly — it triggers an external system interaction (attaching to a running process). Misuse could enable subsequent unauthorized operations on design files.

From the tool's definition Connect to a running Altium Designer instance

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs app_attach safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Altium-MCP-Suite, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For app_attach, this is the rule to start with:

app_attach Rate-limited

app_attach 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": {
    "app_attach": {
      "limits": [
        {
          "counter": "app_attach_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Altium-MCP-Suite, apply this rule, and every app_attach call is checked against it from then on.

FAQ

Questions about app_attach

What does the app_attach tool do? +

Connect to a running Altium Designer instance. It is categorised as a Execute tool in the Altium-MCP-Suite MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on app_attach? +

Register the Altium-MCP-Suite MCP server in PolicyLayer and add a rule for app_attach: 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 Altium-MCP-Suite. Nothing to install.

What risk level is app_attach? +

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

Can I rate-limit app_attach? +

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

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

app_attach is provided by the Altium-MCP-Suite MCP server (M-R-Abedini/Altium-MCP-Suite). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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