spider_ai_browser

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

No annotations are provided, so the description must carry the full burden. It discloses a critical prerequisite ('REQUIRES an active AI subscription plan') but does not discuss operational behaviors such as navigation side effects, timeouts, or failure outcomes. This is a moderate amount of transparency for a nontrivial automation tool.

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 three sentences long, with each sentence serving a distinct purpose: stating the core function, giving a usage example, and flagging the subscription requirement. It is front-loaded and contains no filler.

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 is complex (browser automation with natural language), yet the description omits details about expected output, rate limits, and how it compares to sibling tools. The subscription requirement and purpose are present, but the overall guidance is minimal for a tool with this scope.

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 provides descriptions for all five parameters, achieving 100% schema_description_coverage. The description adds little beyond an example prompt, so the schema already carries the parameter meaning. Baseline 3 is appropriate.

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 clearly states 'AI-powered browser automation using natural language' and provides concrete examples ('click login, fill email, submit form'). This specific verb+resource distinguishes it from sibling tools like spider_scrape or spider_crawl, which focus on data extraction rather than interaction.

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?

The description gives clear usage context by showing how to phrase actions ('Describe actions like...'), implying this tool is for interactive tasks rather than retrieval. However, it does not explicitly mention alternatives or when not to use it, so it falls short of a 5.

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