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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds that the data is 'stable' metadata scraped from a public team page, which is useful source context, but it stops short of richer behavioral detail or rate/permission notes.

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?

Four short, front-loaded sentences: purpose first, then parameter sourcing, allowed values, and sibling routing. Efficient, with only the duplicated sport-value list being mildly redundant with the schema.

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?

An output schema exists, so return values need no explanation, and annotations carry the safety profile. All three required params are documented with provenance and the sibling relationship is clear; little is missing for an agent to call this correctly.

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 baseline is 3. The description adds meaning beyond the schema by specifying the provenance of all three parameters (they come from an item returned by /draftkings/sportsbook/teams), even though the allowed sport values it lists are already enumerated in 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?

States a specific verb and resource ('Returns stable team metadata embedded in a public DraftKings Sportsbook team page') and distinguishes itself from the sibling draftkings_teams, which it names explicitly as the tool for retrieving league teams.

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?

Tells the agent exactly where to source the three parameters ('from an item returned by /draftkings/sportsbook/teams') and names draftkings_teams as the upstream tool for getting teams. It gives clear prerequisite context but does not spell out explicit when-not-to-use cases beyond the sibling routing.

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