Get evolution chain

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

With no annotations, the description carries the full burden of disclosing behavior. It accurately describes the read-only return of text and related entries, but does not explain how invalid/missing inputs are handled or what happens when both id and name are provided. The core behavior is disclosed, but not exhaustively.

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 sentence that front-loads the core purpose and includes necessary detail about related entries. It is concise and free of extraneous content, though the trailing clause adds slight complexity.

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's return value is described at a high level, covering the text and related entries. However, without an output schema, the structure of the returned data is vague, and there is no mention of error behavior or preferred parameter. The simplicity of the tool makes this acceptable, but not fully complete.

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 states 'for an id or name', which adds that either parameter can be used, but this is already implied by the schema having both properties. With 0% schema description coverage, this minimal clarification does not compensate for the lack of parameter-level detail. It does not explain mutual exclusivity, format of name, or precedence.

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 returns the Evolution section text for an id or name, plus related entries. This specific verb and resource distinguish it from sibling tools like get_pokemon or list_pokedex_entries.

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 implies the tool is for retrieving evolution-related text, but it does not explicitly state when to use it over alternatives. No exclusions or alternative tool references are provided, leaving usage context somewhat implied.

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