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

The annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds the nature of the returned items and their downstream role, but says nothing about size, pagination, or filtering that the annotations and output schema don't cover.

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 short sentences, front-loaded with what the tool returns followed by the reason to call it. No filler or redundancy.

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 parameters, full annotation coverage, and an output schema handling the return shape, the description only needs to convey purpose and placement in the workflow, which it does. A brief note on how it differs from the other list_* tools would make it complete.

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?

The tool takes zero parameters, so there is no per-parameter semantics to document; baseline 4 applies. The description correctly implies a simple no-argument listing.

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 concrete verb+resource: a catalogue of backtestable strategy templates, with examples (RSI, trend, breakout) that make the content tangible. It does not explicitly distinguish itself from near-siblings such as list_native_strategies or list_arena_strategies, so it falls short of a 5.

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?

"Parfait pour démarrer une mutation avant generate_arenascript_strategy" gives a clear usage context and names the follow-up tool, which is genuinely actionable. It stops short of exclusions (e.g. when to prefer list_native_strategies instead), so no 5.

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