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nolanbaxter

Local Browser MCP

by nolanbaxter

network

Inspect recent network activity from browser sessions. Get method, URL, status, and resource type for each request to debug issues.

Instructions

Return recent network requests (method, url, status, resourceType).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Addedv0.4.0

TDQS

A3.6/5.0
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only says it returns requests, but does not clarify whether the list is cleared on retrieval, whether it includes pending requests, or whether it has side effects. For a read-like tool this is a notable gap.

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?

A single sentence that is fully front-loaded with the action and the returned fields. There is no filler or redundant phrasing; every word contributes to understanding the tool.

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?

For a zero-parameter, simple getter, the description is largely complete: it names the resource and the fields returned. However, there is no output schema and the description does not explain the meaning of 'recent' (e.g., count limits, persistence), but these are minor for the simplicity of the tool.

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

Parameters4/5

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

The input schema is empty (0 parameters), so the baseline is 4 and no parameter documentation is needed. The description adds no parameter-related meaning, but none is required; there is nothing to compensate for.

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 states a specific verb ('Return') and resource ('recent network requests'), and enumerates the exact fields (method, url, status, resourceType) that make the purpose concrete. This clearly differentiates it from sibling tools like 'console' or 'downloads', which cover other event types.

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

Usage Guidelines2/5

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

There is no guidance on when to use this tool versus alternatives, no mention of prerequisites, and no indication of whether it should be called before or after navigation. The description simply states what it returns, leaving the agent to infer usage context.

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