vivado_generate_tcl · Vivado Mcp Agent MCP: Risk & Policy

WHAT IT DOES

What vivado_generate_tcl does on Vivado Mcp Agent

AI agents invoke vivado_generate_tcl 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_generate_tcl needs a policy

This tool generates and presumably executes Tcl scripts that drive Vivado FPGA operations including synthesis, implementation, bitstream generation, and hardware programming. Tcl script execution triggers real hardware operations and can program physical FPGA devices. The 'program' capability in particular means it can push firmware to hardware.

From the tool's definition Generate whitelisted Vivado Tcl for create_project/sim/synth/impl/drc/cdc/bitstream/hardware/program

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vivado_generate_tcl Rate-limited

vivado_generate_tcl 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_generate_tcl": {
      "limits": [
        {
          "counter": "vivado_generate_tcl_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_generate_tcl

What does the vivado_generate_tcl tool do? +

Generate whitelisted Vivado Tcl for create_project/sim/synth/impl/drc/cdc/bitstream/hardware/program. 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_generate_tcl? +

Register the Vivado Mcp Agent MCP server in PolicyLayer and add a rule for vivado_generate_tcl: 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_generate_tcl? +

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

Can I rate-limit vivado_generate_tcl? +

Yes. Add a rate_limit block to the vivado_generate_tcl 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_generate_tcl completely? +

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

vivado_generate_tcl 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.