Login to Money Lover

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 discloses the core behavior—authenticating and returning an access token—but omits token lifetime, session effects, or error behavior. This is adequate for a simple login but not rich.

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?

One compact sentence with no filler; the authentication action and return value are front-loaded. Every word earns its place.

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 is sufficient for a simple two-parameter login call, but without annotations or an output schema it leaves the token's subsequent use unspecified and does not describe the response shape. These are meaningful gaps for an agent needing to chain this with sibling tools.

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?

Both parameters are fully described in the schema (100% coverage), so the description adds no parameter-level detail beyond what the schema already provides. The 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?

States a specific verb ('Authenticate') and resource ('Money Lover'), and clearly distinguishes itself from the sibling data-operation tools by being the only authentication tool. It also specifies the outcome: returning an access token.

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 conveys that login is for obtaining an access token, which implies it should precede authenticated calls, but it never explicitly says 'call this before other tools' or mentions alternatives/exclusions. Usage context is therefore implied rather than stated.

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