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 discloses the returned artifact (a User API Key), but says nothing about credential handling, error behavior on bad credentials, key lifetime, or the role of api_dev_key versus user credentials. For an auth tool with zero annotation coverage this is a notable gap.

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?

A single front-loaded sentence with the verb first and the payoff second; no filler or redundancy.

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 tool is simple, the schema fully documents its inputs, and an output schema exists so return values need not be explained. Still, with no annotations the description should have covered auth failure behavior or how the returned key is used, leaving it only minimally 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 100%, so all three parameters (user_name, password, api_dev_key) are already documented in the schema. The description adds no syntax, format, or precedence detail beyond that, so 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 (Login) plus the resource (Pastebin) and the concrete outcome (obtaining a User API Key). It also distinguishes itself from siblings like get_trending_pastes or create_paste by naming what the resulting key is for: private pastes and listing.

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 phrase 'for private pastes and listing' gives a clear context for when this tool is needed, implicitly positioning it as a prerequisite to authenticated operations. However, it names no alternatives and gives no when-not-to-use guidance (e.g., whether anonymous pastes skip login entirely).

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