color_identity_staples

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

Annotations already declare readOnlyHint, openWorldHint, and idempotentHint, covering safety and idempotency. The description adds value by revealing the data source (EDHREC aggregated data) and fallback behavior (EDHREC rank from bulk data), which informs the agent about data freshness and reliability.

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?

Two sentences, no filler, front-loaded with purpose. Every word earns its place. Highly efficient.

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?

Description explains data source and fallback, but does not clarify the return structure (e.g., what fields are returned, whether cards are formatted as names with ranks). Since no output schema exists, some guidance on expected output format would improve completeness. Minor gap given the tool's simplicity.

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 coverage is 100%, so each parameter is already documented. The description adds little beyond the schema: it mentions 'color identity' (already in schema) and implies results are sorted by popularity. This is baseline value; no significant extra semantics provided.

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?

Description clearly states the tool returns 'top cards across ALL commanders in a color identity', specifying verb (list top cards), resource (color identity), and scope (all commanders). This distinguishes it from per-commander staple tools like edhrec_commander_staples.

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 vs alternatives. The phrase 'across ALL commanders' hints at a broad use case, but does not state when one should choose this over sibling tools like edhrec_commander_staples or scryfall_search_cards. Usage is implied but not explicit.

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