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

Beyond the readOnly/openWorld/idempotent annotations, the description discloses that this is an experimental edge with no fallback, that candidates are enabled live only when under test, and that no candidate is currently active (last retired 2026-07-26), so behavior currently matches ask_pipeworx exactly. This gives the agent an accurate safety and freshness picture.

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 core 'beta/identical router' statement and keeps the experimental status, current candidate state, and no-fallback caveat in tight, purposeful sentences. Minor redundancy exists between 'identical' and 'currently matches ask_pipeworx exactly', but every sentence contributes useful information.

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 single required question parameter, rich annotations, and a clear pointer that the response shape matches ask_pipeworx, the description provides enough context for invocation. The absence of an output schema is mitigated by the 'same response shape as ask_pipeworx' statement, though the actual response format is not spelled out.

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 already documents all six parameters at 100% coverage. The description adds only that the arguments are identical to ask_pipeworx, which is useful context but does not add new meaning beyond the input schema's alias definitions.

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 it is a beta version of ask_pipeworx, an identical universal router with the same 5,798 tools, arguments, and response shape, differentiated from the stable tool by candidate routing improvements. This is a specific, meaningful purpose that clearly distinguishes it from its sibling ask_pipeworx and ask_pipeworx_grounded.

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 names the alternative (ask_pipeworx) and provides the condition: use this when you want the newest routing, with results compared against the stable router. It lacks an explicit when-not-to-use statement, but the 'newest routing' condition and 'stable router' comparison make the intended use clear.

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