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

Annotations already declare destructiveHint=true and readOnlyHint=false, so the description doesn't need to disclose that this is destructive. It goes beyond the annotations by stating the practical consequence of removal (the address becomes eligible for outreach again) and by restating the confirmation requirement, which adds real context about the side effect.

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 sentences, front-loaded with the action and then the consequence and the precondition. The opening clause slightly restates the title ('Delete Blocklist Entry by ID'), which is mildly redundant, but the rest of the text is efficient.

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 destructive single-record delete with a full schema and an output schema, the description covers the side effect and the confirmation requirement. The main gap is not distinguishing this tool from the sibling remove_from_blocklist, so the agent could pick the wrong tool.

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 baseline is 3. The description mentions 'by its ID' but adds no syntax, format, or meaning beyond what the schema already documents for id, confirm, and workspace_id.

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?

Specific verb and resource: 'Delete Blocklist Entry by ID - Remove a single blocklist entry by its ID.' It's clear what it does, but the sibling remove_from_blocklist is not mentioned, so an agent must infer the difference between deleting a blocklist entry record and removing an address from the blocklist.

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 names one precondition (explicit user confirmation) and the consequence of deleting (address becomes eligible for outreach again), which implies when it's appropriate. It doesn't say when to prefer remove_from_blocklist or add_to_blocklist, so the sibling routing is left to inference.

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