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

With no annotations, the description carries the burden and does disclose meaningful behavior: amounts are in US cents, exceeding the credit limit blocks further filings until the balance drops, and the credential/cost profile. It stops short of stating this is a pure read with no side effects and does not describe return formatting.

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?

Four short sentences that lead with the purpose and then layer on units and the credit-limit consequence. The trailing 'Credential/Cost/Source' tokens are useful but slightly meta-clutter against an otherwise tight description.

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?

There is no output schema and no annotations, so the description must stand alone — and it names the returned information (fees, credit limit, payment instructions) plus units and the limit-breach consequence. It is adequate for a zero-parameter read tool, with only return shape left unstated.

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 no parameters, so there is nothing to document and the baseline of 4 applies. The unit statement ('amounts are in US cents') is relevant downstream context even though it is not a parameter.

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 states concretely what the tool surfaces — legal-assistance and court fees owed, your credit limit, and payment instructions — so an agent can tell it is a financial-status read rather than a payment action. The first-person framing ('I want to know what my agent owes the Court') is indirect instead of a clean verb+resource, and it never explicitly contrasts itself with sibling financial tools like payment_status or operator_receivables.

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?

Usage is only implied by the content (checking what you owe and your credit limit); there is no explicit when-to-use statement and no guidance on when to prefer this over payment_status, pay_ledger, or fee_quote. The 'Credential: key. Cost: Free.' footer is metadata rather than routing advice.

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