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

Annotations already declare readOnly, openWorld, and idempotent hints; the description adds meaningful behavior beyond those: it is a live experimental router, candidate improvements activate automatically, no candidate is currently active, and it is a fully working router rather than a fallback. This gives the agent essential calibration about reliability and current state without contradicting the annotations.

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 and front-loads the critical beta/identical-to-stable information before explaining route selection and fallback behavior. Minor redundancy exists between 'identical universal router' and 'Use it exactly like ask_pipeworx', but the extra sentences each contribute useful operational context.

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 no output schema, the description sufficiently covers current status, relationship to the stable sibling, and routing intent. It omits a self-contained explanation of the response shape, but explicitly points to ask_pipeworx as the reference, which is reasonable for an agent operating alongside that sibling.

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 description coverage is 100%, so all six parameters and the alias relationship are already documented. The description only says 'same arguments' without adding new parameter-level meaning, so the schema carries the load and the description adds minimal value here.

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 identifies the tool as a beta universal router with the same 5,724 tools, arguments, and response shape as ask_pipeworx, so an agent can reliably infer its intended use. It clearly distinguishes the beta variant from the stable ask_pipeworx, though it leans on the sibling's identity rather than stating the core action in fully self-contained terms.

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 explicitly instructs the agent to use it exactly like ask_pipeworx when wanting the newest routing and explains that results are compared against the stable router. It communicates the primary selection criterion, though it does not discuss exclusions or when the stable/grounded siblings would be preferred.

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