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OnStartups

Agent.ai MCP Server

by OnStartups

grab_web_text

Extract text from a single web page or crawl up to 100 pages to gather comprehensive textual data from websites.

Instructions

Extract text from a specified web page or crawl multiple pages for comprehensive data gathering.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlYesURL of the web page to extract text from.
modeNoCrawler mode: 'scrape' for one page, 'crawl' for up to 100 pages.scrape
Behavior2/5

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

No annotations provided. Description only indicates read operation (text extraction) and crawl capability, but misses details like limitations, authentication needs, or behavior on dynamic content.

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

Conciseness5/5

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

Single sentence, front-loaded, no wasted words. Efficiently conveys core functionality.

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?

Lacks description of return value format (plain text? structured data?). With no output schema, missing info on what the agent receives after invocation.

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?

Schema covers 100% of parameters with clear descriptions; tool description adds no extra semantics beyond schema.

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?

Clearly states 'extract text' from web pages, with two modes (single page or crawl). Distinguishes from sibling 'grab_web_screenshot' which captures images.

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

Usage Guidelines3/5

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

Implies use cases via mode parameter but does not explicitly compare to alternative tools or provide when/when-not guidance.

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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