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

Annotations already declare readOnly=false, idempotent=true, destructive=false, and openWorld=false, so the safety profile is covered structurally. The description adds nothing on top: it doesn't say what happens if the bot was not blocked, whether an error or a no-op results, or what state changes occur.

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?

Three words with zero waste and fully front-loaded, but this is terseness rather than conciseness — the brevity comes at the cost of any 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?

For a simple one-parameter mutation with no output schema, the annotations carry the safety story, but the description still omits error/no-op behavior and parameter meaning. It is not complete enough for an agent to call this confidently without inspecting the schema.

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 required parameter, and the description does not compensate at all — bot_id is never explained, nor is its relationship to the 'agent' terminology in the tool name. The only meaning comes from the bare parameter name.

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?

"Undo a block" gives a verb and a resource, and implicitly reads as the inverse of the sibling block_agent. However, it never says what is being blocked/unblocked (the parameter is bot_id while the tool name says agent), leaving the object of the action slightly ambiguous.

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?

No when-to-use guidance, no prerequisites, and no mention of the obvious alternative (block_agent) or of list_blocks for inspecting current blocks. The agent must infer that this is the reversal path from the sibling name alone.

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