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htshongany

Baseline Checker

by htshongany

check_baseline

Analyzes HTML, CSS, and JavaScript for Baseline compatibility. Pass complete code to get a percentage and specific issues.

Instructions

Analyzes web code for Baseline compatibility. Pass the complete code to get compatibility percentage and specific issues.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
codeYesComplete HTML/CSS/JavaScript code to analyze

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A3.6/5.0
Behavior3/5

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

No annotations are provided, so the description must carry the full behavioral burden. It discloses the return content (compatibility percentage and specific issues), which helps, but says nothing about permissions, rate limits, safety, or error behavior.

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?

Two sentences with zero waste, and the core action and input constraint are front-loaded.

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?

Complete enough for a simple single-parameter analyzer: it states the purpose, input constraint, and return values. It is missing explicit routing to the sibling tool and any behavioral caveats.

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 coverage is 100%, so the single parameter is fully documented in the schema. The description repeats that the complete code must be passed, adding emphasis but no syntax or format detail beyond the schema, so baseline 3 applies.

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

Purpose4/5

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

States a specific verb 'Analyzes' and resource 'web code' with the target 'Baseline compatibility.' The phrase 'Pass the complete code' implicitly distinguishes it from the selection-based sibling, but the sibling is not named explicitly.

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?

Usage is implied: pass the complete code for a full analysis, as opposed to using the selection variant. However, there is no explicit when/when-not guidance or named alternative.

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

Deploy Server

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