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

Annotations already provide readOnly, openWorld, idempotent, and non-destructive signals; the description adds meaningful behavior beyond those: this is a live experimental edge that currently matches stable ask_pipeworx exactly, and it 'falls back to nothing' rather than degrading to a stub. It also reveals that routing improvements are tested live and retired based on outcome evidence, which is precisely the kind of behavioral nuance an agent cannot infer from 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 four sentences and every sentence contributes: identity, live-candidate status, usage instruction, and no-fallback clarification. The opening is front-loaded with the core definition, though the parenthetical enumeration and dated retirement detail are slightly dense.

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 high-complexity universal router with no output schema, it covers identity, relationship to the stable tool, current active state, usage, and the no-fallback guarantee. It assumes the agent already understands ask_pipeworx's response shape, but since ask_pipeworx is a sibling with the same shape, that external reference is reasonable. It is complete enough for correct selection and invocation.

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 fully documents question plus its five aliases, so with 100% schema coverage the baseline is 3. The description only says 'same arguments' as ask_pipeworx and does not add syntax, format, or example meaning beyond the schema. It does not need to compensate for any schema gap.

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 first sentence identifies ask_pipeworx_beta as a beta version of ask_pipeworx, a universal router with the same 5,714 tools, arguments, and response shape. This is a specific verb+resource description that also distinguishes it from sibling ask_pipeworx and ask_pipeworx_grounded by calling out the experimental routing edge. The description then clarifies current equivalence to the stable router, so an agent knows exactly what it is selecting.

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 says to use it exactly like ask_pipeworx when you want the newest routing, and notes results are compared against the stable router to decide what merges. It lacks a direct 'when not to use' statement or a comparison to ask_pipeworx_grounded, but the beta/stable distinction and current no-candidate state provide sufficient context.

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