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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint, and the description adds meaningful live behavioral context: candidate routing improvements are enabled only while under test, none are active right now, and this is a full working router rather than a fallback or no-op. It also discloses that results are compared against the stable router for merge decisions.

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 dense but well-structured, front-loading the beta/identical-router identity before covering current candidate state and usage guidance. Every sentence earns its place, including the 'Falls back to nothing' clarification, which prevents a common false assumption about beta tools.

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 router with one primary question parameter and no output schema, the description sufficiently covers current behavior, active-candidate status, scope of routable tools, response-shape compatibility, and non-fallback nature. The 'same response shape' reference compensates for the missing output schema by directing the agent to the stable ask_pipeworx behavior.

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 covers all six parameters at 100% detail, including the five aliases and the primary 'question' parameter, so no description-level parameter explanation is necessary. The description only mentions 'same arguments' as ask_pipeworx, which adds no new semantic layer beyond the schema baseline.

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 identifies this as the experimental beta counterpart to ask_pipeworx, a universal router handling natural-language questions and routing to 5,724 tools. It precisely states 'identical universal router' with the same arguments and response shape, which distinguishes it from stable and grounded siblings without ambiguity.

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 explicitly instructs the agent to 'Use it exactly like ask_pipeworx when you want the newest routing' and notes that with no active candidate it currently matches ask_pipeworx exactly. It does not explicitly contrast with ask_pipeworx_grounded or state a hard preference for the stable tool, but the experimental edge use case is clear.

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