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visual-inspector-mcp

visual-inspector-mcp

by MatinMHF
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
Local

Console logs

console_logs
Read-only

Retrieve recent browser console messages and page errors to correlate visual issues with JavaScript errors.

Instructions

Recent browser console messages and page errors — correlate a visual issue with a JS error.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "console_logs"
  }
}

Input Schema

NameRequiredDescriptionDefault
clearNoClear the buffer after reading
levelNo'all' (default) or 'error' (errors, page errors, and warnings only)
limitNoMax entries to return, most recent first (default 30)
withTimestampsNoInclude timestamps in the output (default false)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A4/5.0
Behavior4/5

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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the agent knows it is a safe read operation. The description adds value by specifying the content (console messages and page errors) and the suggested use case (correlating with JS errors). It discloses that logs are recent but does not elaborate on buffer behavior beyond the clear parameter.

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

Conciseness5/5

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

The description is a single, front-loaded sentence that conveys the purpose and a key use case without any unnecessary words. It efficiently communicates the tool's function.

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

Completeness4/5

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

Given no output schema, the description clarifies the type of data returned (console messages and page errors). Combined with well-documented parameters, the description is largely complete for a read-only tool. A minor gap is the lack of explicit mention of the browser context, but it is implied.

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?

The input schema provides 100% coverage for all four parameters with descriptions. The tool description does not add extra meaning beyond the schema, so baseline score of 3 is appropriate.

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?

The description clearly states the tool returns 'recent browser console messages and page errors' and provides a specific use case: 'correlate a visual issue with a JS error'. It distinguishes itself from sibling tools like click, navigate, which are actions, and screenshot, which is a visual capture, by focusing on logs.

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?

The description implies usage for debugging visual issues but does not provide explicit instructions on when to use this tool versus alternatives, nor does it mention when not to use it. It lacks direct guidance for an AI agent to choose among siblings.

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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