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kloakt_scrape

Scrape multiple URLs in parallel with full JavaScript rendering. Returns each page as a result object for efficient batch extraction.

Instructions

Scrape many URLs in parallel with one call. Each URL is rendered with full JS, then returned as a result object. Far faster than calling kloakt_extract in a loop. Use when you already have a known list of pages to pull.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlsYesList of URLs to scrape in parallel
eval_jsNoOptional JS expression evaluated on each page
concurrencyNoMax concurrent fetches (default: 10)
Behavior3/5

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

No annotations are provided, so the description must cover behavioral traits. It mentions parallel rendering, JS execution, and concurrency default, but does not disclose whether the operation is read-only, idempotent, or any potential side effects. Adequate but lacks some depth.

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?

Three sentences, front-loaded with the main action, no unnecessary words. Efficient and to the point.

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

Completeness4/5

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

For a tool with no output schema, the description explains what the tool does, how it works (parallel, JS rendering), and when to use it. Could mention the return format more explicitly, but overall sufficient for the complexity.

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 coverage is 100% with clear descriptions for all three parameters. The description does not add additional semantics beyond what the schema provides, so 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 'Scrape many URLs in parallel with one call' and mentions full JS rendering. It distinguishes itself from kloakt_extract by highlighting parallelism and speed.

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

Usage Guidelines4/5

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

Explicitly says 'Use when you already have a known list of pages to pull' and compares to kloakt_extract, providing clear context for usage. Does not explicitly state when not to use, but the guidance is clear.

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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