extract_json_schema

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

The description discloses a concrete behavioral requirement—'Requires 0.03 USDC on Polygon'—which is useful and not present in annotations. However, it doesn't disclose how the payment is processed, whether mutation or side effects occur, failure modes, or whether the payment_tx_hash is mandatory, making it partially unclear.

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 just two sentences and front-loads the core purpose. The payment requirement is a necessary detail and is stated separately at the end, making it easy for an agent to quickly scan and absorb the critical information.

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 three parameters, two required, and no annotation support. The description fails to explain what schema_description should look like, the relationship between the payment requirement and payment_tx_hash, and what constitutes a successful response beyond the existence of an output schema. This is not enough for an agent to select and invoke the tool confidently.

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 0%, so the description is responsible for explaining the parameters. The description never defines 'url', 'schema_description', or 'payment_tx_hash'. While the tool name suggests what a schema extraction does, the agent gets no concrete guidance on how to supply the required schema_description parameter.

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 states a specific action ('Extracts structured JSON schema data from any webpage') and gives the intended use ('for tool calling and databases'), which clearly identifies what the tool does. It doesn't explicitly name sibling tools, so it loses some points on differentiation, but the verb and resource are clear enough.

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 versus fetch_clean_web_content, fetch_youtube_transcript, or other siblings. The description implies a niche use case (JSON schema extraction) but does not mention when not to use it, what prerequisites or constraints apply, or how to pick alternatives.

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