ghl_calendar_service_update

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

Annotations already indicate readOnlyHint=false, destructiveHint=false, idempotentHint=true. The description adds OAuth scopes (calendars.write), which is useful auth context. However, it does not disclose update semantics (partial vs full replacement), rate limits, or side effects.

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?

The description is concise (3 lines) and front-loads the purpose. It includes endpoint and OAuth scopes. While very short, it avoids unnecessary verbosity. Could add more context without being wordy, but overall 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?

The description lacks crucial details for a complex update operation: no mention of what the response contains (no output schema), no explanation of whether it's a full replacement or partial update (PUT), and no notes on validation or required fields beyond the required parameters. This incompleteness hinders effective use.

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 coverage is 100%, and the description adds no parameter-level information. The body parameter is complex, but the schema documents each field with examples. The description does not provide additional meaning, so baseline 3 is appropriate.

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 states 'Update service by ID,' clearly indicating the verb and resource. It distinguishes from sibling tools like create, delete, get, list. However, it is very terse and does not elaborate on what properties can be updated, though the schema covers that.

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 provides no guidance on when to use this tool versus alternatives, no prerequisites, nor any when-not-to-use advice. Given the many sibling tools, this omission makes it harder for an agent to decide.

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