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

Annotations already declare destructiveHint=true and idempotentHint=true, yet the description still adds substantial value: immediate monitor shutdown, a cascading soft-delete of all child resources and historical data, and a 30-day retention window before permanent removal. That is exactly the kind of 'what actually gets destroyed and when' context annotations cannot convey. It does not mention permission requirements or behavior on a nonexistent project id, so it is not a full 5.

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 short sentences, front-loaded with the action, then the immediate effect, then the retention lifecycle. Every sentence carries new information and nothing is repeated from the annotations or schema.

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 full schema coverage and no output schema, the definition covers the critical unknowns: cascade scope, timeline, and reversibility window. It could be slightly more complete by stating whether the soft-deleted project can be recovered within the 30 days or what happens when the project_id does not exist.

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% with a single required parameter whose meaning ('The numeric id of the project to delete') is fully specified in the schema. The description adds no format, sourcing, or lookup guidance for project_id, so the baseline of 3 applies.

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 opens with a specific verb and resource ('Delete a project') and immediately clarifies the cascade scope ('everything beneath it, including its historical data'). It distinguishes itself from sibling delete tools implicitly through the project resource, but it never explicitly contrasts with delete-monitor-tool or delete-organization-tool, so it stops short of a 5.

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 implied by the destructive nature of the operation and the data-retention detail, but there is no explicit when-to-use versus when-not-to-use guidance and no named alternative (e.g., update-project-tool for reversible changes, delete-monitor-tool for single monitors). The agent must infer the routing decision from the resource name.

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