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

With no annotations, the description must carry the full behavioral burden. It says 'Prompt discarded,' which implies the input is ignored and the call returns a fixed template, but it does not disclose whether any side effects, network access, or failures occur. The discarding trait is also partially present in the schema descriptions, so the added value is limited.

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 consists of two short sentences with no filler, and the main verb is front-loaded. However, the second sentence is cryptic and could be clearer, slightly reducing structure quality from excellent to good.

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?

A tool with 9 optional parameters, no output schema, and no annotations needs far more context than this. The description leaves the agent unable to determine why this tool exists, what output to expect beyond a vague template, and which of the many siblings it should be used with.

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 100%, so the baseline is 3. The description adds a general 'Prompt discarded' hint, but many individual parameter descriptions already state 'discarded after...' for specific cases. The description does not strongly clarify whether all 9 parameters are ignored or just some.

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 states 'Return a three-step thinking template,' which is a specific verb and resource, but the purpose of a 'thinking template' is unclear and it does not distinguish the tool from siblings like fetch-status or timezone. The ambiguous phrase 'Prompt discarded' further obscures intent.

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?

There is no guidance on when to use this tool versus any of the 28 siblings, no exclusions, and no alternatives mentioned. An an agent cannot know in what scenario this tool should be selected.

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