yd_set_token

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

With no annotations, the description states that the token is validated before saving, which is a key behavior. However, it does not disclose side effects like overwriting existing tokens or failure handling.

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 two focused sentences with no extraneous information, front-loading the core action and validation.

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 simple token-setting tool with 3 parameters and no output schema, the description adequately covers purpose and key behavior (validation), though it could mention prerequisites or failure cases.

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 schema covers all parameters with descriptions. The description adds context about token source and Wordstat usage but does not add significant meaning beyond the schema, 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 clearly states the verb 'Save' and the resource 'Yandex OAuth access_token', and mentions validation against the Metrika API, distinguishing it from siblings like yd_set_client_id and yd_auth_status.

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 implies usage after obtaining an authorize link and mentions optional parameters, but it does not explicitly state when to use this tool versus alternatives or provide exclusions.

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