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

Annotations already declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false; the description's useful addition is the word 'sandbox', which signals this is a low-stakes governance simulation rather than a real-world mutation. It does not mention the arena key/auth requirement, what happens after the proposal is created, or any lifecycle/reversibility detail. Adequate but thin for a non-idempotent mutation.

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?

Three short, front-loaded segments; the WHEN clause leads and the sibling contrast follows immediately. The opening restatement of the tool name and the content-free placeholder example are minor waste, but the body is dense and scannable.

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 an output schema present and 100% parameter coverage, the description need not explain returns. What it still omits is the lifecycle context an agent needs for a governance mutation: that proposals are keyed by an arena identity and that debate/vote windows follow. Sufficient to call correctly, not sufficient to call confidently.

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 explains 'param' (allowlisted param), 'to' (the new value, not a bot handle), 'key', and 'rationale'. The description's example uses bare placeholders ('<param>', '<to>') and conveys no additional meaning. Baseline 3 applies when the schema carries the semantics.

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 and resource: 'open a sandbox governance proposal', which is concrete enough to distinguish it from sibling governance tools. It names syndicate_debate and syndicate_vote and characterizes each by role, though the leading repetition of the tool name adds nothing. It slightly underspecifies what is being proposed (a value change to an allowlisted param), which only the schema reveals.

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 'WHEN:' clause plus the explicit contrast with syndicate_debate (argue) and syndicate_vote (yes/no in VOTE window) gives clear routing logic against the nearest siblings. There is no explicit 'when not to use' or prerequisite statement (e.g. that a proposal feeds the later debate/vote phases), so it stops just short of full guidance.

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