measure_upload_speed

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

With no annotations, the description must disclose behavioral traits, but it only describes the measurement function. It does not mention whether it sends real data, requires permissions, or has any side effects like network traffic or temporary files.

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 relatively concise at 6 lines with a clear structure: purpose, Args, Returns. It front-loads the main purpose, though the Args section repeats schema information unnecessarily.

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 lack of output schema and annotations, the description covers basic purpose and parameters but lacks detail on return format specifics, usage context, and behavioral implications of a network-uploading tool.

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 description adds meaningful parameter details beyond the schema via the Args section, explaining each parameter's purpose and constraints (e.g., sustain_time range 1-8). However, the size_limit format (e.g., allowed units) is not specified.

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 'Measure upload speed using incremental file sizes,' providing a specific verb and resource. It distinguishes itself from sibling tools like measure_download_speed, but could be more explicit about what 'incremental file sizes' entails.

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?

No guidance is provided on when to use this tool versus alternatives like measure_download_speed or run_complete_test. The description lacks context for appropriate usage scenarios.

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