webdev_regex_tester

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

No annotations are provided, so the description must disclose behavior. It hints at 'real-time pattern matching' and 'detailed explanations,' suggesting interactive and safe behavior, but does not fully explain side effects or return structure. The description is adequate but not comprehensive.

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 concise, with 3 sentences that front-load the purpose. It avoids redundancy but is slightly brief; however, it earns its place without waste.

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?

Given the tool has 4 parameters, nested flags, no output schema, and no annotations, the description is incomplete. It lacks details on replacement behavior, flag usage, and return format, relying on describe_tool for full guidance.

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 coverage is 0%, meaning the description should compensate by explaining parameters. However, it only mentions concepts like pattern and match groups without detailing specific parameters (pattern, text, flags, replacement). The description adds minimal meaning beyond the schema names.

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 the tool's purpose: 'Test regular expressions online with our interactive regex tester. Real-time pattern matching, capture groups, and detailed explanations with examples.' It is specific about the action and resource, and there are no sibling regex tools to distinguish from.

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 indicates the tool's use case (testing regex) but provides no explicit guidance on when to use it vs alternatives or prerequisites. It mentions using describe_tool for full guidance, implying more detail elsewhere, but lacks direct usage context.

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