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

No annotations are present, so the description must carry the behavioral load. It does so strongly by warning that existing ciphertexts will become permanently unreadable, disclosing the destructive consequences, and clear access requirements.

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: first the purpose, then the warning, then access instructions. No sentence is wasted, though the authentication workflow could be slightly tightened without losing 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?

For a one-parameter destructive tool with no output schema, the description covers the essential information: what is deleted, the permanent consequence, and the authentication prerequisite. The agent has enough to decide whether to call it and what to expect.

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?

The input schema covers hitl_id fully with 100% schema description coverage, so the description does not need to add parameter detail. It adds no extra meaning beyond the schema, which is acceptable for this simple one-parameter tool.

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 states a specific action and resource: deleting the encryption keypair from a HITL config. It is distinct from the sibling delete_hitl, which likely deletes the whole config, and from upload_hitl_keys / get_hitl_keys, which manage keys for reading or writing.

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 gives clear context for use: requires a Proof account, requires authenticating the client, and explicitly warns that start_login does NOT open this tool. It does not name alternative key-management tools, but the access instructions and exclusion of start_login provide solid usage guidance.

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