decibel-shield

About the Decibel Shield iOS app

get_decibel_shield_app

Read-onlyIdempotent

Answers "is there a decibel meter app", "best decibel meter app for iPhone", "how do I measure sound with my iPhone", "what is Decibel Shield". Facts and the App Store link for Decibel Shield - dB Meter, the iOS sound level meter app behind this data: features, pricing, requirements. Use only when someone wants to measure sound with a phone or asks about the app itself — for noise data, use the other tools.

Input Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Output Schema

TableJSON Schema

Name	Required	Description	Default
`name`	Yes
`price`	No
`rating`	No
`min_ios`	No
`attribution`	No
`app_store_url`	Yes
`web_meter_url`	No

TDQS

A4.7/5.0

Behavior4/5

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

Annotations already declare readOnlyHint and idempotentHint, so the description's role is lighter. It adds value by detailing the type of information returned (e.g., App Store link, features, pricing). No contradictions.

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?

Three tight sentences, front-loaded with example queries. Every sentence serves a purpose with no wasted words.

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

Completeness5/5

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

The description fully characterizes the tool's purpose and output for its low complexity (no params, output schema exists). Nothing is missing.

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?

There are no parameters (100% schema coverage by default). The description correctly adds no param info, as none are needed. Baseline 4 for zero parameters.

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 answers specific questions about the Decibel Shield iOS app, providing facts, App Store link, features, pricing, and requirements. It distinguishes from sibling noise-data tools by explicitly stating its scope.

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

Usage Guidelines5/5

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

The description explicitly states when to use (when someone wants to measure sound with a phone or asks about the app itself) and when not to use (for noise data, use other tools), providing clear guidance.

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

All decibel-shield tools Inspect

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TDQS

A4.4/5.0

Disambiguation5/5

Each tool has a clearly distinct purpose: address-level noise, city-level estimated (world), city-level measured (Europe), US city exposure, neighborhood ranking, ordinance info, sound level lookup, safe exposure time, and app information. Overlaps are minimal and well-documented in descriptions.

Naming Consistency5/5

All tool names follow a consistent verb_noun pattern (get_, list_, lookup_, safe_). Naming conventions are uniform, using lowercase with underscores, making it easy to predict tool names from the domain.

Tool Count5/5

With 10 tools, the server is well-scoped for its purpose of providing noise information. Each tool covers a specific aspect of the domain without redundancy, and the number is within the ideal 3-15 range.

Completeness4/5

The tool set covers address, neighborhood, US city, European city, and world city noise, plus sound levels, safe exposure, and some ordinances. Minor gaps include limited ordinance coverage (only 8 US cities) and lack of noise data for non-European/non-US regions, but core queries are addressed.

Resources

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