reading_time

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

The description discloses a cost ('Costs $0.001 USDC via x402'), which is a useful behavioral trait, but it does not describe the tool's operation, return value, or any side effects. With no annotations, the description fails to provide a clear picture of what happens when invoked.

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 very short, but much of its content is redundant ('reading time' restating the name) or categorical. The cost note is the only original piece, but the overall structure is an under-specified snippet rather than a well-organized tool description.

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?

Given the minimal schema, no annotations, and no output schema, the description should compensate by explaining the tool's purpose, inputs, and outputs. It does none of that, making the tool essentially unusable for an autonomous agent without more information.

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 includes a generic 'params' object with no specific sub-parameters, and the description adds no information about what parameters are expected (e.g., text input, reading speed). This leaves the agent completely in the dark about how to construct a valid invocation.

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 'reading time' is a direct restatement of the tool name and provides no verb or explicit resource. It includes a category label 'Other Utilities tool' but does not explain what the tool does, such as estimating how long it takes to read a given text.

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 guidance on when to use this tool or what it should be used for. It does not mention any alternative tools or conditions for use, leaving the agent without context to decide between this and sibling tools like 'speaking_time' or text analysis utilities.

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