etsy_login

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

No annotations are provided, so the description carries the full burden. It conveys that login is an authentication prerequisite, but does not disclose session behavior, failure modes, repeated-call effects, or related side effects. This is adequate but leaves notable behavioral gaps.

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 short sentences deliver the core purpose and the key usage precondition with no filler. Both sentences earn their place, and the most important information is front-loaded.

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 low-complexity login tool with two fully documented parameters, the description is largely complete: it states what the tool does and when it should be invoked. It could add more about login success or session state, but the lack of an output schema does not critically hinder correct invocation.

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%, with both email and password already described as 'Etsy account email' and 'Etsy account password.' The description only adds the generic term 'credentials,' so it provides no meaningful parameter meaning beyond the schema.

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 uses a specific verb and resource: 'Log in to Etsy with credentials.' It clearly identifies the tool's function and naturally distinguishes it from all sibling tools, which are post-authentication Etsy actions rather than authentication itself.

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 second sentence explicitly states when this tool is needed: 'before operations that require authentication.' It does not name alternatives or exclusions, but there is no alternative login tool among the siblings, so the guidance is sufficient.

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