Drop a rostered player

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

Annotations already mark this as destructive, and the description adds valuable behavioral context: it posts a payload to ESPN, can be previewed via dryRun without posting, and is subject to roster-lock and league-rule enforcement. This goes beyond what the annotations alone convey and does not contradict them.

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 with the purpose, then covers constraints, parameter defaults, and authentication in five short sentences. The first sentence slightly overlaps with the title, but overall there is minimal padding and every sentence carries useful 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?

Given the output schema, full parameter documentation, and destructive annotations, the description is largely complete: it covers auth requirements, league constraints, defaults, and the dryRun escape hatch. The only notable gap is the absence of explicit guidance about when to use direct drop versus a waiver claim, which was already factored into the usage-guidelines score.

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 baseline is 3. The description mostly restates what the schema already says about player ID formats, negative D/ST IDs, teamId and week defaults, and dryRun behavior, adding no substantially new parameter-level 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?

The description uses a specific verb and object, 'Release one player from your fantasy team,' which clearly identifies the drop action and its target. It is distinguishable from siblings like add_player and submit_waiver_claim, but the description does not explicitly contrast itself with those alternatives.

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 provides useful contextual constraints: ESPN roster locks and league rules may block the drop, and ESPN_S2/ESPN_SWID authentication is required. However, it does not explain when to choose drop_player over sibling tools such as submit_waiver_claim, so usage guidance is mostly implied rather than explicit.

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