Exchange Google Health OAuth Code

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

The description adds behavioral details beyond annotations: tokens are stored locally with 0600 permissions and never returned. It also mandates user intent, which is valuable context. No contradiction with annotations.

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, each adding essential information: purpose and then storage/guard details. No redundant content.

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 covers the core behavior and storage outcome. With an output schema present, return values are covered. Missing handling of invalid codes or token usage context, but overall adequate.

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 high (both parameters have descriptions), so the description adds little beyond the schema. It does not enrich semantics for the parameters.

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 clearly states the verb 'Exchange' and the resource 'Google OAuth authorization code' for the purpose of obtaining local tokens. It distinguishes itself from siblings like google_health_get_auth_url by specifying the exchange step.

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?

Explicitly states that the tool is gated and requires explicit user intent, providing a critical usage constraint. However, it does not explicitly mention that it should be used after obtaining an auth code from a sibling tool.

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