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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, destructiveHint=false, so safety is covered. The description adds meaningful behavioral context: that this is live experimental routing, that improvements are enabled only when under test, that none is active now, and that behavior currently matches ask_pipeworx exactly. It also clarifies it is a complete working router, not a fallback shim. It does not mention rate limits or response format, but the response shape is stated as identical to ask_pipeworx, which covers the key expectation. Loses one point for not detailing what happens if a candidate is under test from the caller's perspective, but the current-state disclosure is strong.

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 not bloated; several sentences earn their place by explaining the beta status, current equality with stable, usage instruction, and fallback behavior. It does repeat 'identical/universal router' and 'same tools, same arguments, same response shape,' which is slightly redundant. The first sentence is front-loaded with the key identity and the most important fact. Penalized one point for minor redundancy and for the slightly informal aside about the retired candidate, which is contextual but not essential for invocation.

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 output schema is absent, the description does state the response shape is identical to ask_pipeworx, which compensates well. An agent knows how to invoke it, what to expect relative to the sibling, and that it is safe. The main gap is that it doesn't tell the agent when NOT to use this beta (e.g., when production stability is required) or any differences in error behavior. It also relies on the agent already understanding ask_pipeworx's response shape. Still, for a router with one string parameter and strong annotations, this is nearly complete.

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 coverage is 100%, so the schema documents every parameter with aliases. However, the description does not add any parameter-level meaning beyond the schema; it only repeats that arguments are identical to ask_pipeworx. The description is about routing behavior, not about what question should contain or how it is used. Baseline for 100% coverage is 3, but the lack of any added semantic guidance and the high number of aliases (5 aliases for one question string) leaves the agent without direction on how to phrase the question or which alias is canonical. This is a small deduction from 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 states this is a beta version of ask_pipeworx: an identical universal router with the same 5,767 tools, same arguments, and same response shape. It clearly distinguishes from the stable ask_pipeworx by noting it enables candidate routing improvements and is currently identical because no candidate is active. The verb 'ask' plus resource 'pipeworx beta' is specific and unambiguous.

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 explains the purpose: results are compared against the stable router to decide what merges. It also clarifies it falls back to nothing and is a full working router, preventing agents from treating it as a non-functional experimental stub. This is clear when-to-use guidance against the sibling.

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