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

Annotations already mark the tool as read-only, idempotent, open-world, and non-destructive. Beyond those, the description discloses that candidate routing improvements may be live during tests, that no candidate is active as of 2026-07-26, and that there is no fallback—this is a fully working router, not a stub. These facts materially affect whether and how an agent should invoke it. No contradiction with annotations.

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 four dense sentences and front-loads the identity/relationship and current state before usage guidance. Each sentence adds a piece of information; the only minor inefficiency is some repetition of 'identical/same' and the emphatic no-fallback sentence, but the material is relevant and the structure is clear.

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 complex experimental router with no output schema, the description covers what it is, what differs, whether a candidate is active, how to use it, and that it is fully functional. It relies on ask_pipeworx for the actual response-shape details and does not give examples, which is a reasonable but non-complete handoff.

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 all parameters, setting the baseline at 3. The description adds only that the arguments and response shape are identical to ask_pipeworx, which is useful cross-reference but does not add meaning about question semantics or the alias parameters. No compensation is required.

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 opens by identifying this as a beta version of ask_pipeworx and an identical universal router with the same 5,798 tools, arguments, and response shape, which names a specific resource and behavior. It then distinguishes the beta from the stable sibling by the candidate routing improvements, so an agent can tell it apart from ask_pipeworx from prose alone.

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 exactly like ask_pipeworx when the newest routing is desired, and it notes that results are compared against the stable router. It also communicates the current state (no active candidate, so it currently matches ask_pipeworx). It does not state when not to use it or mention the ask_pipeworx_grounded alternative, leaving a small gap.

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