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

No annotations are provided, so the description carries the full burden. It explicitly states 'Read-only' and describes the safety mechanism of refusing deposits that would push liabilities above a safe share. It also notes that solvency is checkable, adding behavioral insight beyond the bare function.

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 three sentences, each with a distinct value: what it publishes, the solvency guarantee, and the read-only usage scenario. Every sentence earns its place with no wasted words.

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 zero-parameter tool, it covers the key aspects: purpose, scope, read-only safety, and a concrete user scenario. It does not detail the exact return format, but the description gives enough context for expected data (liabilities vs float per chain), making it reasonably 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?

With zero parameters, schema coverage is trivially 100%. The description adds scope context ('all netting accounts', 'per chain') that enriches the empty schema. The baseline of 4 for no parameters is appropriate and the added context justifies it.

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 uses the specific verb 'publishes' and clearly identifies the resource: what Robyn owes against the real relayer float per chain. It distinguishes itself from sibling netting tools by focusing on solvency/proof rather than account info or transfers.

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 provides a clear usage context: 'a user considering a custodial balance should be shown this.' It also emphasizes read-only nature, implying it's for verification rather than action. No explicit alternatives are named, but the context gives sufficient guidance.

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