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

Annotations already mark the tool as read-only, open-world, and idempotent; the description adds crucial experimental context: candidate routing improvements may be live, no candidate was active as of 2026-07-26, and the tool currently behaves exactly like ask_pipeworx. It also explicitly states there is no fallback, removing a common assumption about beta tools. This substantially enriches what the annotations alone convey.

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 front-loaded with the key fact that this is a beta version of ask_pipeworx, and every sentence contributes current behavior, usage timing, or fallback semantics. The specific retirement date and final reassurance are slightly verbose but materially reduce ambiguity. Overall it is dense 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 no-output-schema router over 5,724 tools, the description gives enough: same arguments and response shape as ask_pipeworx, exact current equivalence, and the live-testing caveat. It stops short of describing a sample response or the routing mechanism, but since it points to the stable sibling for shape, this is adequate for invocation. Minor gaps remain around what happens when a candidate is active and how results are returned.

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%; all six properties are documented as aliases of the required question parameter. The description only says 'same arguments' and adds no format, constraints, or usage detail beyond the schema. Baseline 3 is appropriate because the schema carries the full semantic burden.

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 ask_pipeworx_beta as a beta version of ask_pipeworx and a universal router with the same 5,724 tools, arguments, and response shape. This avoids tautology and gives enough detail to distinguish the experimental edge from the stable sibling. However, it does not explicitly contrast with ask_pipeworx_grounded, so differentiation across all siblings is incomplete.

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 says '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. This gives a clear selection condition and names the stable sibling as the alternative. It does not spell out a when-not condition or compare with ask_pipeworx_grounded, so it falls just short of fully explicit guidance.

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