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

With no annotations, the description carries the full behavioral burden, and it does almost nothing. It does not state that deletion is permanent, whether confirmation is required, what permissions are needed, or how recurring events are handled. The word 'delete' only weakly implies destruction.

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?

A single short sentence with no wasted clauses, and the operant verb+resource is front-loaded after a brief boilerplate prefix. It is efficient, though the low information density reflects under-specification rather than good editing.

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 destructive mutation with no annotations and no output schema, the definition is incomplete: it never explains permanence, target identification, or side effects. The parameter set is also odd for a delete operation, and nothing in the description compensates for that ambiguity.

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% and there is only one parameter, so the schema itself already documents 'detail'. The description adds no meaning about how 'detail' should be formatted or what it must contain to identify the target event, so baseline 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 names a specific verb ('delete') and resource ('event' in Google Calendar), which distinguishes it from siblings like add_event, update_event, and check_events_*. However, the prefatory boilerplate 'Run Google calendar action:' adds no discriminating information, and no scope details (single event vs. recurring series) are given.

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?

There is no guidance on when to use this versus update_event or add_event, no prerequisites, and critically no warning that this is a destructive, likely irreversible operation. The agent must infer all usage context from the name alone.

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