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extract_data

Extract structured data from web pages by providing a URL, instructions, and a JSON template. Use AI to convert unstructured web content into organized JSON output.

Instructions

Extract structured data (JSON) from a web page URL using AI via ReviewWeb.site API.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlYesThe URL to extract data from
instructionsYesInstructions for the AI on what data to extract
jsonTemplateYesJSON template for structuring the extracted data
systemPromptNoOptional system prompt to guide the AI
modelNoAI model to use for extraction
delayAfterLoadNoOptional delay after page load in milliseconds
recursiveNoIf true, recursively scrape all internal URLs and extract data from each
debugNoEnable debug mode for detailed logging
api_keyNoYour ReviewWebsite API key
Behavior2/5

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

No annotations provided, and the description fails to disclose important behavioral traits such as API key requirements, rate limits, error handling, or the implications of the 'recursive' flag. The tool's reliance on an external API is mentioned, but without details.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, concise sentence with no unnecessary words. However, it could be slightly expanded to include key details without becoming verbose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (9 parameters, no output schema, no annotations), the description is insufficient. It does not explain return format details, required authentication, or the behavior of optional features like 'recursive' or 'debug'.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema already provides 100% coverage with clear descriptions for all 9 parameters. The description adds no additional meaning beyond what the schema offers, so a baseline score of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action (extract), output format (structured JSON), source (web page URL), method (using AI), and service (ReviewWeb.site API). It effectively distinguishes from siblings like 'scrape_url' and 'extract_links'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool vs alternatives. With many sibling tools (scrape_url, convert_to_markdown, etc.), the description lacks context for when extraction is preferred over raw scraping or summarization.

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

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