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

No annotations are provided, so the description carries the full behavioral burden, and it discloses nothing: not whether the computation is pure/read-only, not what the inputs must look like, and not what the response contains. This is a complete absence of behavioral context.

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 text is short, but its brevity is under-specification rather than efficiency: it repeats the same two words and contributes no front-loaded information. Every character is redundant with the tool name.

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 three-parameter financial-indicator tool with no annotations and no output schema, the description supplies nothing an agent needs — no input format, no output shape, no indication of what period/multiplier conventions apply. It is wholly inadequate for the tool's complexity.

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 nominally 100%, which sets the baseline at 3 per the rubric. However, the schema's own descriptions are placeholders ('Period to process', 'Values to process', 'Multiplier to process'), and the tool description adds no clarification of units, expected formats, or whether values is a comma-separated series — so the high coverage is more formal than substantive.

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 'Bollinger Bands: Bollinger Bands' merely restates the tool name twice, providing no verb, scope, or distinguishing detail. An agent learns nothing beyond the identifier itself, and the sibling list contains many adjacent indicator tools (x402-sma, x402-ema, x402-atr, x402-macd) that this description does nothing to separate itself from.

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?

There is no when-to-use guidance, no mention of when to prefer a different indicator tool, and no prerequisites. The text is purely a name echo, so an agent has nothing to route on.

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