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BillyBunn

local-apple-data

by BillyBunn

messages_search

Read-onlyIdempotent

Search local Messages chat metadata by display name with a configurable limit. Read-only access ensures data privacy.

Instructions

Search local Messages chat metadata by display name, capped and read-only.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
queryYes
limitNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior4/5

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

Annotations already provide readOnlyHint=true and destructiveHint=false. The description adds 'capped' and 'by display name', which are behavioral traits not fully captured in annotations, giving additional context about result limits and search criteria.

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 of 7 words. Every word is meaningful, no fluff, and it efficiently conveys the core purpose and constraints.

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 the presence of an output schema, the description does not need to explain return values. It covers input semantics adequately for a simple tool, though it could specify that only metadata (not content) is searched.

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?

With 0% schema description coverage, the description partially compensates by explaining that 'query' is used for display name search. However, it does not describe the 'limit' parameter beyond the vague 'capped', leaving its role and default partially inferred.

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 specifies the verb 'Search', the resource 'local Messages chat metadata', and the filter criterion 'by display name', clearly distinguishing it from sibling tools that search other resources or perform other operations.

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?

The description provides no guidance on when to use this tool versus alternatives like messages_get_chat or other search tools. It only states what it does without clarifying when not to use it or suggesting alternatives.

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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