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xlisp
by xlisp

list_sms

Retrieve SMS messages from your Android device. Filter by type such as inbox, sent, or draft, and limit the number of results.

Instructions

List SMS messages.

Args: limit: Number of messages to retrieve (default: 10) type: Message type - 'inbox', 'sent', 'draft', 'all' (default: inbox)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNo
typeNoinbox

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations are provided. The description does not disclose behavioral traits such as whether the tool is read-only, sorts messages, or has any side effects. It simply describes the output.

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 very concise with two clear sentences about purpose and parameters. No wasted words.

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

Completeness3/5

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

With an output schema present, return values are covered. However, the description could be more complete by mentioning ordering or pagination behavior.

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?

Schema description coverage is 0%, so the description compensates by explaining each parameter with defaults and type descriptions (e.g., limit as number of messages, type as message type with inbox default). This adds meaning beyond the schema.

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?

The description states 'List SMS messages' which clearly identifies the action and resource. It implicitly distinguishes from sibling tool 'send_sms' which is for sending. However, it lacks explicit differentiation from other list tools.

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 context is implied as a read operation to retrieve messages. No explicit guidance on when to use vs when not to use, or 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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