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

The description adds substantial context beyond the readOnlyHint/idempotentHint annotations: it discloses the experimental beta status, the invariant of identical tools/arguments/response shape, the current no-candidate-active state with a retirement date, and that it is a full working router with no fallback. This goes well beyond what annotations alone convey, though it stops short of describing what a future candidate would actually change.

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 six dense sentences, each earning its place: beta identity, invariants, active-candidate status with date, usage direction, comparison role, and no-fallback clarification. It is front-loaded with the most important fact (beta version of ask_pipeworx). Only the 'Falls back to nothing' phrasing is momentarily ambiguous before its immediate clarification.

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 beta variant tool, the description covers identity, invariants, current status, selection criteria, and its experimental role in routing comparisons. The absence of an output schema is mitigated by the explicit 'same response shape' statement. A minor gap is the lack of any description of what behavior would differ when a candidate is actively under test.

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%, so the baseline is 3 even with no parameter detail in the description. The description only cross-references 'same arguments' as ask_pipeworx and does not add meaning beyond the schema's own documentation of question and its aliases q/text/input.

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 the tool as the beta version of ask_pipeworx — an identical universal router over 5,908 tools — and distinguishes it from the sibling tools ask_pipeworx and ask_pipeworx_grounded via the experimental-edge framing. However, the core function (routing a question to the best underlying tool) is only implied through the 'universal router' phrase and the sibling name, not stated plainly.

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?

'Use it exactly like ask_pipeworx when you want the newest routing' provides an explicit selection condition, and the stable-vs-experimental comparison framing implicitly names ask_pipeworx as the alternative. It lacks an explicit when-not-to-use statement (e.g., when deterministic stable behavior matters), but the beta/stable contrast makes the tradeoff clear.

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