regex_validate

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

No annotations provided; the description states core behavior (syntax check + flag description) but lacks details like return format, potential destructive effects (none expected), or behavior on invalid input. Adequate but minimal.

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?

Single sentence, no extraneous information. Front-loaded with action and resource.

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?

No output schema; description fails to specify return type or structure. For a validation tool, what is returned (boolean, string with errors, etc.) is critical and missing.

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 100% with basic descriptions. The description adds that validation is for 'syntactic validity' and mentions 'describe the flags used', which is slightly beyond schema but not significantly enhancing parameter understanding.

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 checks syntactic validity of a regex pattern and describes flags. It distinguishes from siblings like regex_test (tests against a string) and regex_explain (explains pattern), so purpose is specific.

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?

No guidance on when to use this tool vs. alternatives (e.g., regex_test for matching, regex_explain for explanation). The description only states what it does, without context for selection.

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