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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint=false, so the safety profile is fully covered elsewhere. The description adds nothing behavioral on top of that – no note on the openWorld lookup behavior, no hint about failure modes or the meaning of combining position/form/fixtures in one call.

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?

Three short sentences, front-loaded with the resource and outputs, then user-phrasing examples. Nothing redundant, though the leading 'Form Guide.' fragment duplicates the title.

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?

For a read-only lookup with no output schema, the description does convey what comes back (position, form, next games), which is adequate. It falls short on sibling routing, which is significant given three overlapping formguide tools, and offers no detail on the response shape.

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 schema already explains every parameter including the q/team aliasing, allowed leagues, and country-coded shirt links. The description's example queries loosely map to the team parameter but add no syntax or constraint detail beyond the schema, so the baseline 3 applies.

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 a specific resource and enumerates the three outputs returned: league position, recent form, and next games. It is clear what the tool produces, but it never distinguishes itself from the sibling tools formguide_get_table, formguide_get_results, and formguide_get_fixtures, which appear to cover the same three sub-topics individually.

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 example queries ('how are Arsenal doing?', 'what's Spurs' form?') imply when to reach for this tool, which is useful trigger guidance. However, it gives no explicit alternative or exclusion, and given four sibling formguide tools that overlap heavily on table/results/fixtures, an agent gets no help deciding between them.

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