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

Annotations already mark this as a safe read-only operation. The description adds value by disclosing the return content, the 'FREE' nature, and the fact that no parameters are needed, which together give the agent a realistic expectation of the tool's behavior.

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 compact and front-loaded, immediately stating the tool's purpose. The list of deliverables is concise and free of redundancy, with every sentence contributing meaningful information.

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 parameterless read-only info tool, the description fully specifies what the agent will receive: match schedule, venue details, demand surge, transportation, and compliance. Since there is no output schema, this enumeration covers the expected return, making the description complete for its 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?

There are zero parameters, and the schema coverage is 100% (empty). The description explicitly states 'No parameters required' and enriches understanding by listing the types of information returned, which helps the agent know what to expect despite the lack of inputs.

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's function: getting World Cup 2026 information for Philadelphia. It enumerates specific content areas (match schedule, venue, demand surge, transportation, STR compliance), which distinguishes it from sibling tools like check_world_cup_2026_str_compliance and search_world_cup_rentals.

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 communicates a clear use case: general info retrieval about World Cup 2026 in Philadelphia. The 'FREE TOOL' and 'No parameters required' signals it is a low-friction lookup, but it does not explicitly name alternatives or exclusions, leaving some ambiguity against more specialized siblings.

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