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

The description adds substantial behavioral context beyond annotations: it is a beta edge router, currently has no active candidate so it matches ask_pipeworx exactly, falls back to nothing, and is a full working router. This is unusually transparent about experimental state and expected behavior.

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 beta purpose and contains no wasted sentences. Some redundancy exists between 'identical universal router' and 'currently matches ask_pipeworx exactly,' but the detail about candidate state earns its place.

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 routing tool with no output schema, the description explains current behavior, experimental status, no fallback, and how to use it. It is complete enough for safe invocation, though it could mention the grounded sibling for fuller decision-making context.

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%, and the input schema already documents the question parameter and its aliases. The description adds only that this tool takes the same arguments as ask_pipeworx, which does not meaningfully extend parameter understanding.

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 this as a beta universal router identical to ask_pipeworx, with routing improvements under test. It distinguishes itself from the stable ask_pipeworx router, but does not explicitly differentiate from ask_pipeworx_grounded, so sibling differentiation is incomplete.

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 to use it exactly like ask_pipeworx when the agent wants the newest routing, and explains that results are compared against the stable router. It does not state exclusions or when to choose ask_pipeworx_grounded, so it lacks full when-not guidance.

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