save_workout_log

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

With no annotations, the description carries the full burden. It states a save operation but doesn't disclose whether it overwrites existing entries, appends, or returns a success indicator, nor any prerequisites like an existing log file. This is minimal for a mutation tool.

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?

One sentence, nine words, front-loaded verb-object structure. No fluff, and the core action is immediately clear.

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?

The tool has 5 parameters (4 required) and no output schema, yet the description is only one sentence. No mention of return values, error handling, or the expected JSON structure for the exercises parameter, leaving the agent under-informed for a write operation.

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?

All 5 parameters have schema descriptions (100% coverage), so the description adds no additional parameter meaning. The baseline of 3 applies because the schema already documents each field adequately.

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 uses a specific verb ('save') and resource ('completed workout session' to 'log file'), clearly distinguishing it from read-only siblings like get_workout_log and render_* tools. The purpose is unambiguous.

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 explicit guidance on when to use or alternatives is provided. The intent is implied by the name and description, but it doesn't mention that get_workout_log is for reading or that render_workout is for display, so the agent must infer usage context.

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