create_run_easy_workout

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

No annotations are provided, so the description carries the full burden. It usefully discloses that the workout is uploaded to Garmin Connect (an external write side effect), but says nothing about authentication requirements, whether re-running creates duplicates, or how failures behave. Adequate but thin for a mutating 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?

Front-loaded with the action and the sibling comparison in the first two sentences, followed by a compact args list. No filler; every line adds information an agent needs.

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?

An output schema exists, so return values need not be explained, and parameter defaults are covered. For a write tool with no annotations, the remaining gap is operational context such as auth requirements and duplicate-handling, but the core information needed to invoke it correctly is present.

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?

Schema description coverage is 0%, so the description must compensate, and it does: all five parameters are documented with meaning, units (minutes), and defaults (Z2, 10/10), including the Z1-Z5 range for hr_zone. Only the exact duration constraints and name formatting rules are left implicit.

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?

States a specific verb and resource ('Create an easy aerobic run workout') plus the side effect ('upload it to Garmin Connect'). It explicitly positions itself against the sibling create_run_workout, so an agent can distinguish the two without opening either schema.

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?

Names the alternative (create_run_workout) and gives the selecting condition: this one defaults to Z2 with shorter warmup/cooldown, i.e. use it for simpler easy runs. It does not state exclusions or what to do if the user wants a specific zone other than Z2, so it falls short of a full 5.

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