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

Annotations already provide readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds valuable context: no candidate is active right now, so it currently matches ask_pipeworx exactly; it falls back to nothing and is a full working router, not a stub. It also hints at evaluation behavior (results compared against stable router). This adds moderate behavioral context beyond annotations without contradiction.

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 a dense paragraph but each sentence earns its place: beta status, identical interface, current no-candidate state, usage recommendation, and fallback clarification. It is slightly long-winded with some redundancy ('identical universal router (same 5,798 tools, same arguments, same response shape)'), but overall front-loaded with the key point (beta + identical behavior) and well structured.

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?

For a beta router with a simple single-required-parameter schema and no output schema, the description covers what an agent needs: what it is, current behavior matching stable, how to use it, and that it is fully functional. The only minor gap is that it doesn't explicitly describe the response shape, but it says it matches ask_pipeworx exactly, and the sibling tool would presumably carry that detail. The richness of annotations and the simple schema mean this is adequately complete.

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% and the schema documents 'question' with several aliases (q, text, input, query, prompt). The description adds little parameter-level meaning, but the schema already carries the full burden. Baseline 3 is appropriate; no compensation needed. The description's mention of 'same arguments' is redundant with the high schema coverage.

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 it is a beta version of ask_pipeworx with identical routing, tools, arguments, and response shape, and it explicitly mentions candidate routing improvements. It distinguishes itself from the stable ask_pipeworx sibling by framing itself as the experimental edge. It's clear, though not a perfect standalone definition since it leans heavily on the parent tool's identity.

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?

Explicitly says 'Use it exactly like ask_pipeworx when you want the newest routing' and compares results against the stable router to decide merges. It also implicitly provides when-not-to-use context: if you don't want the experimental edge, use the stable ask_pipeworx. This is strong usage guidance with an alternative named.

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