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bluebubbles-mcp

by metaember

get_recent_messages

Read-onlyIdempotent

Retrieve recent messages from all iMessage chats within a specified time window. Parameters: minutes (lookback), limit (max messages).

Instructions

Get recent messages across all chats within a time window.

Args: minutes: How far back to look (default 60 minutes). limit: Max messages to return (default 50).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
minutesNo
limitNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

Annotations already indicate readOnlyHint=true and idempotentHint=true. The description adds no additional behavioral traits beyond the time window scope. It does not contradict annotations.

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 extremely concise: a single line for purpose then two lines for parameters. No fluff, front-loaded with the key action.

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 output schema existence and low parameter count (2), the description covers the purpose and parameters adequately. It could mention ordering or pagination, but the output schema likely covers return structure.

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 coverage is 0%, but the description adds clear semantics: 'minutes: How far back to look' and 'limit: Max messages to return' with defaults. This compensates well for the lack of schema documentation.

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 'Get recent messages across all chats within a time window,' specifying a specific verb and resource, and distinguishes from siblings like get_chat_messages (specific chat) or get_message (single message).

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?

The description explains the parameters and defaults but does not explicitly guide when to use this tool over alternatives like get_chat_messages or search_messages. Usage is implied but not directly stated.

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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