get_pathway_reactions

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, fully covering the safety profile. The description adds no behavioral traits (e.g., pagination, rate limits, return format). It is acceptable but fails to add context beyond what annotations provide.

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 two sentences long, front-loaded with the verb and resource, and contains no fluff. Every part earns its place, including the example parameter value.

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 tool's simplicity (single parameter), rich annotations, and presence of an output schema, the description is minimally adequate. It states what the tool does but omits details about the output format or the structure of returned reactions.

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 schema has 0% description coverage for the single parameter pathway_id, leaving its meaning entirely to the description. The description provides an example value ('hsa00010') which adds some meaning, but does not fully specify the expected format or allowed values. This partially compensates for the missing schema documentation.

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 'Get all reactions in a KEGG pathway', using a specific verb and resource. It effectively distinguishes this tool from sibling tools like get_pathway_genes or get_pathway_compounds by explicitly focusing on reactions.

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 provides no guidance on when to use this tool versus alternatives such as get_pathway_genes or get_pathway_compounds. It only gives an example pathway_id, which loosely hints at usage but does not specify contexts or exclusions.

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