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

Goes well beyond the annotations by disclosing the ten-minute expiry, the person-scoped constraint ('for the signed-in person only'), and an explicit non-capability note ('this tool holds no Google access itself'). It also clarifies the downstream consequence of the connection (read for free times, written with bookings), which is exactly the behavioral context annotations cannot convey.

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?

Front-loaded with what the tool returns, then layered with the essential constraints in a single tight sentence. It is dense with semicolons but every clause earns its place; a small loss for one long compound sentence rather than clearly separated points.

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 zero-parameter, read-only tool with no output schema, the description supplies everything needed: what it returns, how long the link lasts, who it is valid for, and that the tool itself has no Google access. Nothing required to call and correctly interpret it is missing.

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?

The tool takes zero parameters, so the baseline is 4 and there is nothing in the schema for the description to expand on. Mentioning that the link is scoped to the signed-in person usefully explains the implicit subject of the call.

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?

States a specific verb and resource: it returns the link a person opens to connect their Google calendar to this workspace. The scope ('their Google calendar to this workspace') distinguishes it from the mailbox and Tommo Google-account siblings, though it never names those alternatives explicitly so the agent must infer the routing from names.

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 link a person opens in their browser to connect their Google calendar', giving clear context for when this applies. But it never states when NOT to use it or names the near-identical siblings (link_to_connect_a_tommos_google_account, link_to_connect_your_mailbox), leaving the agent to infer the choice.

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