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

Annotations already cover read-only, idempotent, non-destructive, and closed-world behavior. The description adds meaningful data semantics beyond annotations: it returns Prorakel tendency before kickoff and final score plus whether the tendency was correct after the whistle.

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 definition is front-loaded and efficient: it states the core result first, then adds availability. The long competition list is justified as it defines scope, though it makes the sentence heavier than necessary.

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?

With one required parameter, rich annotations, and no output schema, the description gives enough context about what is returned and when final scores appear. It is nearly complete, though a brief note on how tendency fields are represented could help.

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 the enum and parameter description already define the only parameter. The description lists supported competitions by name but does not map them to the enum codes, adding only moderate context beyond the schema.

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 scope: all matches of the current matchday for a competition, including Prorakel tendency and final-score behavior. It does not explicitly differentiate itself from siblings like spiele_am_tag or bilanz, so it falls short of a 5.

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?

Usage is implied by 'aktueller Spieltag' and the supported-competition list, but there is no explicit guidance on when to use this instead of spiele_am_tag or bilanz. No exclusions or prerequisites are stated.

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