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

Beyond the annotations (readOnly, idempotent, non-destructive, open-world), the description adds meaningful behavioral context: candidate routing improvements are enabled live during tests, no candidate is currently active, and the tool currently matches ask_pipeworx exactly. It also explicitly says it is a full working router, not a fallback stub, which prevents a likely misunderstanding. This is genuinely transparent about what the agent should expect.

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 three sentences and front-loaded with the core identity: 'Beta version of ask_pipeworx'. It then explains current behavior, usage, and the no-fallback guarantee. The level of detail, including the retirement date, is arguably more than necessary, but each sentence contributes useful context and the structure is easy to follow.

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?

Given the annotations and the fully documented schema, the description is mostly complete for invocation. It tells the agent this is a working router, how to use it, and that the response shape matches ask_pipeworx. The main gap is that the response shape is only referenced through a sibling tool rather than described directly, which is a minor issue because ask_pipeworx appears in the sibling list.

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 schema description coverage is 100%, and all parameters are aliases for the required 'question' parameter, so the schema already documents the input semantics fully. The description only repeats that the arguments are the same as ask_pipeworx, adding no new parameter-level meaning. The baseline of 3 is appropriate.

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 beta version of ask_pipeworx, a universal router with the same 5,908 tools, arguments, and response shape. It explicitly differentiates itself from the stable ask_pipeworx by the candidate routing improvements and the experimental edge. 'Falls back to nothing — this IS a full working router' reinforces the tool's actual purpose 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?

The description gives a direct usage instruction: use it exactly like ask_pipeworx when you want the newest routing. It also warns that results are compared against the stable router to decide merges, which clarifies its role as an experimental variant. It does not explicitly state when NOT to use it or name a stable alternative beyond 'ask_pipeworx', but the beta/stable contrast makes the intended selection fairly clear.

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