vivado_run_cdc · Vivado Mcp Agent MCP: Risk & Policy

WHAT IT DOES

What vivado_run_cdc does on Vivado Mcp Agent

AI agents invoke vivado_run_cdc to trigger actions in Vivado Mcp Agent. 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 vivado_run_cdc needs a policy

This tool triggers external Vivado Tcl operations whose effects (CDC analysis results, design evaluations) depend on the arguments and current FPGA project state. While not directly destructive or modifying, it executes code in the Vivado environment. The high severity reflects that misuse could trigger unexpected analysis on sensitive designs or be chained into workflows that modify hardware configurations.

From the tool's definition Tool executes Vivado's 'report_cdc' Tcl command, which is a Vivado analysis tool that runs cross-domain clock checks on FPGA designs. The description explicitly states it 'runs' a Tcl command.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vivado_run_cdc Rate-limited

vivado_run_cdc 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": {
    "vivado_run_cdc": {
      "limits": [
        {
          "counter": "vivado_run_cdc_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 Vivado Mcp Agent, so you can run agents against it safely.

FAQ

Questions about vivado_run_cdc

What does the vivado_run_cdc tool do? +

Run report_cdc Tcl when available, returning clear warnings otherwise. It is categorised as a Execute tool in the Vivado Mcp Agent MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on vivado_run_cdc? +

Register the Vivado Mcp Agent MCP server in PolicyLayer and add a rule for vivado_run_cdc: 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 Vivado Mcp Agent. Nothing to install.

What risk level is vivado_run_cdc? +

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

Can I rate-limit vivado_run_cdc? +

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

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

vivado_run_cdc is provided by the Vivado Mcp Agent MCP server (wangyuxin0707/vivado-mcp-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.