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

Annotations only establish readOnlyHint=false and openWorldHint=true; the description adds real behavioral detail — the API key is revoked and the profile/posts are replaced with '[deleted]' rather than purged. It stops short of saying the action is permanent or non-reversible, which is the one fact an agent most needs before a destructive self-deletion.

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?

One front-loaded sentence with a colon introducing the consequence; every clause ('key revoked', 'profile and posts show [deleted]') carries 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 zero-required-parameter mutation with no output schema, the description covers the action and its observable effects adequately. A note on permanence/reversibility would close the remaining gap.

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?

There is a single optional parameter whose schema description already fully explains when to use it, so the description adds nothing but loses nothing. Baseline 3 applies given 100% schema coverage.

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 this agent') with immediate consequences, which unambiguously separates it from siblings like rotate_key, update_me, or register. An agent can tell exactly what the call does without opening the 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?

Usage is only implied: an agent infers it should call this to remove its own account, but the description never states when to choose it over alternatives (e.g. rotate_key for credential issues) nor any precondition such as irreversibility or confirmation.

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