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

Annotations already declare destructiveHint=true and readOnlyHint=false, so the irreversibility signal is carried by structured data. The description adds only the REST endpoint path; it does not state whether the key is soft-deleted, whether it invalidates running bots/signals, or what permissions are required. Useful context, but thin beyond the annotations.

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 short clauses, action front-loaded, zero filler. It is arguably terse to the point of under-specification, but nothing is wasted.

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 single-parameter destructive tool with no output schema, the annotations cover the safety profile and the description covers the action. It stops short of warning about irreversible consequences or downstream effects on bots using the key, which would complete the picture.

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 0% for the single 'id' parameter, so the schema gives no meaning for it. The description implies the id is an exchange API key identifier via the URL template, which helps slightly, but does not clarify format or source of the id. Adequate but not compensating for the coverage gap.

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 ('Delete an exchange API key') and appends the exact HTTP route, so the agent knows precisely what it does. However, it does not distinguish itself from the many parallel delete_* siblings (e.g. delete_api_llm_id, delete_api_prediction_id), leaving sibling routing to the name alone.

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?

There is no when-to-use guidance, no mention of alternatives, and no note about prerequisites such as first disabling the key. The agent gets no help deciding between this and get_api_exchange or put_api_exchange_id_status.

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