angle_convert

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

The description does disclose the cost ($0.001 USDC via x402), which is a behavioral trait, but with no annotations provided, the description must bear the full burden of transparency. It fails to disclose supported units, conversion behavior, expected input structure, or output format, making it insufficient for a tool with zero annotation coverage.

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 short, but this is under-specification rather than efficient conciseness. It contains only a restatement of the name and a cost note; no functional information is included, making the brevity detrimental.

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 has no annotations, no output schema, and a generic input schema. The description fails to explain even the most basic aspects of the tool—what it converts, what parameters to pass, or what the result looks like. This is completely inadequate for 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?

The input schema only contains a generic 'params' object described as 'Tool parameters as JSON object', with no tool-specific properties. The description adds no parameter meaning, so the agent has no idea what fields to provide (e.g., value, from unit, to unit). The schema's 100% coverage is meaningless because it is just a generic placeholder.

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 'angle convert — Converters tool' is essentially tautological, restating the tool name and providing only a generic category. It does not specify what the tool converts (angle units) or distinguish it from the many sibling converter tools like convert_units or temperature_all.

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?

No guidance is given on when to use this tool versus alternatives. The only additional information is the cost, which does not help an agent decide between angle_convert and other converter tools. With over a hundred sibling converter tools, this is a critical omission.

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