Verify the fetchproxy bridge end-to-end

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

Beyond the readOnlyHint, openWorldHint, and idempotentHint annotations, the description discloses behaviors: the specific URL used, the diagnostics returned (role, port, version, elapsed time), and the failure-mode hints. It also explicitly states 'Read-only, no auth required,' reinforcing safety.

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 two sentences: the first states the action and outputs, the second gives usage guidance. No wasted words; every sentence adds value.

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 has no parameters and no output schema, but the description fully covers what it does, what diagnostics it returns, and when to use it. Annotations cover safety, making the description complete for an AI agent.

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 is empty (0 parameters), so the baseline is 4. The description doesn't introduce parameter semantics, but none are needed. It adds context about the hardcoded URL, which is not a parameter.

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 function: 'Round-trips a small public www.eventbrite.com URL (/api/v3/categories/) through the fetchproxy bridge and returns diagnostics.' It uses a specific verb (round-trips) and resource (fetchproxy bridge), and the list of diagnostics distinguishes it from sibling data-retrieval tools.

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?

Explicit guidance is provided: 'Call this when a real tool fails and you want to know which hop broke.' This gives a clear condition for use and implicitly distinguishes it from alternatives (the other eb_* tools).

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