Force-refresh the player cache

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

With no annotations, the description carries the full burden. It discloses the key behavioral trait: re-downloading a ~5MB dictionary and rewriting disk cache. It does not mention potential latency or network dependency, but the core side effect is clearly stated.

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 with no wasted words. The action is stated first, followed by context and usage condition. Every word contributes.

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 zero-parameter, no-output-schema maintenance tool, the description provides complete context: what it does, data size, frequency, and when to invoke manually. Nothing essential is missing.

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?

Tool has zero parameters, so schema coverage is complete and no parameter descriptions are needed. Baseline of 4 is appropriate; description need not add parameter meaning.

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 states a specific verb ('Re-download') and resource (Sleeper's /players/nfl dictionary), with clear action (rewrite disk cache). It is clearly distinct from sibling query tools like get_available_players or get_trending_players, which all retrieve data rather than refresh a cache.

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?

Explicitly says when to use: 'use this if names look stale' and notes the normal automatic daily behavior. It doesn't mention when not to use it, but no alternative tool performs this refresh function, so the guidance is sufficient.

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