Threads MCP Server

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool 'suggests' based on priority, implying a read-only, non-destructive operation, but doesn't clarify if it requires authentication, how priorities are determined, or what the output format looks like. For a tool with zero annotation coverage, this leaves significant gaps in understanding its behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence: 'Suggest the next thread to work on based on priority.' It is front-loaded with the core purpose, has zero wasted words, and is appropriately sized for a simple tool with no parameters. Every part of the sentence contributes directly to understanding the tool's function.

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

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

Given the tool's complexity (prioritization logic) and lack of annotations or output schema, the description is incomplete. It doesn't explain how priorities are calculated, what data sources are used, or what the suggestion output includes. For a tool that likely involves algorithmic decision-making, more context is needed to guide the agent effectively.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has 0 parameters, and schema description coverage is 100%, so there are no parameters to document. The description doesn't need to add parameter semantics, and it appropriately avoids mentioning any. A baseline score of 4 is given since no parameters exist, and the description doesn't introduce unnecessary complexity.

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

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

The description clearly states the tool's purpose: 'Suggest the next thread to work on based on priority.' It specifies both the action ('suggest') and the resource ('thread'), and distinguishes it from siblings like list_threads or get_thread by focusing on prioritization rather than listing or retrieving. However, it doesn't explicitly differentiate from search_threads, which might also involve prioritization, keeping it from a perfect score.

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

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. It doesn't mention prerequisites, such as needing existing threads or progress data, or compare it to siblings like list_threads or search_threads that might also help with thread selection. Without any usage context, the agent must infer when this tool is appropriate.

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