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Vivado MCP

Vivado MCP

by binghin2
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

add_breakpoint

Set a simulation breakpoint on a signal to pause execution when it changes, rises, or falls, enabling targeted debugging of FPGA designs.

Instructions

Add a simulation breakpoint on a signal condition

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "signal": "<signal>"
    },
    "name": "add_breakpoint"
  }
}

Input Schema

NameRequiredDescriptionDefault
signalYesSignal to monitor
conditionNoTrigger condition (default: change)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

B3.4/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description must disclose behavioral traits. It only states the basic action and does not mention effects like whether breakpoints are persistent, if simulation must be running, or any side effects.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Description is a single sentence, concise and to the point. However, it could include more context without being verbose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple tool with 2 parameters and no output schema, the description is minimally adequate. It lacks context about simulation state requirements or interaction with other breakpoints.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so baseline is 3. The description adds no extra meaning beyond the schema's parameter descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states verb 'Add' and resource 'simulation breakpoint' with specific condition 'signal condition'. It distinguishes from sibling tools like 'remove_breakpoints' and other simulation actions.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use or alternatives, but the name and description make the tool's purpose clear. Implied usage for setting breakpoints during simulation debugging.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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