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

The description adds meaningful behavioral context beyond the annotations: it explains that live candidate routing improvements may be enabled, that none are currently active after the last retirement on 2026-07-26, and that it is a full working router with no fallback. This temporal and experimental behavior is important for an agent to interpret results correctly.

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 well-structured and front-loads the key identity of the tool, then explains current state, usage, and caveat. It is somewhat repetitive in emphasizing identicalness, but every section contributes necessary context.

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 tool with no output schema, the description clarifies that the response shape matches ask_pipeworx, which compensates partially. It covers the experimental nature, routing comparison, and exact current behavior. It relies somewhat on the agent already understanding ask_pipeworx, but given the sibling context this is acceptable.

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 schema already documents the parameters. The description reiterates that arguments are identical to ask_pipeworx but does not add new semantic meaning beyond what the schema provides.

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 defines the tool as the beta version of ask_pipeworx, explicitly stating it is an identical universal router with the same 5,908 tools, arguments, and response shape. It clearly distinguishes itself from ask_pipeworx by being the experimental edge used for testing routing improvements.

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 explicit usage guidance: use it like ask_pipeworx when you want the newest routing, and understand that results are compared against the stable router to decide on merges. It notes that currently no candidate is active, making behavior identical to ask_pipeworx, but it does not explicitly state when not to use it versus the stable version beyond the implied experimental nature.

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