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

Annotations already establish readOnly=true, non-destructive, closed-world, so the safety profile is covered. The description adds real behavioral value beyond them: replies must be emitted verbatim as the entire response with no preamble or postamble, and it discloses that a turn's replies are 'collected'. It does not say what happens on a non-existent or expired turn_id.

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?

Two sentences, zero filler, with the operation stated first and the output-formatting directive immediately after. Every clause 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?

With no output schema, the description carries the return-value burden and does so by naming the collected Pally replies and prescribing exactly how to present them. Only the empty/expired-turn case is unaddressed, a minor gap for a 1-param polling tool.

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 coverage is 100% and the schema itself documents the turn_id format (64-char hex) and the omit-to-get-newest behavior, so the description adds nothing new here. Baseline 3 is appropriate when the schema carries the parameter burden.

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?

States a specific verb+resource ('Check a Pally turn') and scopes it to turns 'still working', which distinguishes it from the sibling message_pally that initiates a turn. An agent can select between the two without opening either schema.

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 phrase 'that is still working' clearly signals the polling context (use after message_pally while a turn is in flight), and the turn_id description cross-references message_pally as the source of the id. It stops short of stating what to do once the turn is finished or whether repeats are safe, so no explicit when-not guidance.

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