check_urls_batch

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

The description states the tool returns per-URL decisions and a summary, implying a read-only operation. But without annotations, it does not explicitly confirm idempotency, error handling, or if any state changes occur.

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?

Two concise sentences that front-load the purpose and output, then provide a use case. No wasted words.

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 no output schema, the description adequately describes the return value. It covers the tool's purpose, usage context, and basics of output, but lacks detail on nested policy structure and potential errors.

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?

With 100% schema coverage, the description adds value by explaining batch behavior ('same policy') and output structure ('allowed/denied summary'), going beyond the schema.

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 verb and resource: 'Batch-check multiple URLs against the same policy.' It also distinguishes from siblings (check_url, validate_policy) by specifying batch operation and policy application.

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?

It provides a concrete use case: 'Useful for vetting a list of pending tool fetches.' However, it does not explicitly mention when to use alternatives like check_url for single URL checks.

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