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

Going beyond the annotations, it discloses that name/URL resolution may query the public App Store and import shared app records (a real side effect), that write authorisation is required, and that one outcome is returned per item. These add genuine behavioral context, though reversibility of the deletion is not addressed.

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 action is front-loaded in the first sentence, followed by input forms, side effects, scope, and auth requirements in a compact five-sentence block. Every sentence carries information, though there is minor overlap between the body and 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?

For a destructive, open-world mutation with an output schema present, the description covers the key agent concerns: scope, side effects, auth, and per-item results. Return-value details are correctly left to the output schema, so the only minor gap is the lack of note on how failures per item are surfaced.

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 schema already documents both parameters thoroughly, including the id/URL/name forms and the 'up to 20' limit. The description largely repeats the accepted input forms rather than adding new meaning, so the baseline of 3 is appropriate.

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 (remove), resource (competitor tracking relationships), and scope (for an app owned by the authenticated account). An agent can immediately distinguish this from add_competitors and get_competitors without opening a schema.

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 clarifies that only the selected pairing is removed and that public apps and other apps' pairings remain, which tells the agent what this tool will and won't affect. It does not explicitly name sibling alternatives like add_competitors, but the usage context is clear enough.

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