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

Annotations already declare this is a non-destructive mutation (readOnlyHint=false, destructiveHint=false, idempotentHint=false), so the safety profile is covered. The description adds meaningful behavior beyond that: a gated precondition and the fact that a refusal returns the awaited move inside the result, which tells the agent how to handle failure.

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, front-loaded with the action and followed by the gating/fallback rule. Dense with jargon, but every clause carries information and there is no filler.

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 mutation tool with no output schema, the description covers the failure path well, but it never explains what READ, CLARIFIED and EXPRESSIBLE are or where an agent verifies them, and it says nothing about what a successful compile yields. An agent can call it but may not know how to reach the prerequisite state.

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?

There is only one parameter and schema coverage is 100%, so the schema already carries 'the rule in the trader's words, every part included'. The description adds nothing about the intent string's expected content or granularity, so baseline 3 applies.

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 core action is recoverable — it compiles the trader's strategy — but the phrasing is wrapped in domain jargon ('the studio machine's FORGED move', 'gates the tape can measure') that an agent cannot decode from the text alone. It gives no differentiation from nearby siblings like studio_move, strategies, rehearse or grade, so an agent has to guess where this sits in the workflow.

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 states a concrete precondition for success (the strategy must have passed READ, CLARIFIED and EXPRESSIBLE) and prescribes the fallback when refused: report the move the studio is waiting for. That is real when-to-use guidance, though it never names an alternative tool to call instead and leaves the gate names undefined.

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