claim_credit

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

No annotations are provided, so the description carries full burden. It discloses: daily allowance cap (default 500 USDX, resets midnight UTC), optional amount vs. full claim, synthetic nature, and API credential requirement. However, it does not detail side effects like whether repeated calls within the day reduce allowance or how failures are handled.

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, no wasted words. Front-loaded with core purpose and immediate constraints. Highly efficient.

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 simple one-parameter tool with no output schema, the description covers all necessary aspects: what it does, constraints, parameter behavior, and prerequisites (API credentials). No gaps remain.

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 coverage is 100% with one parameter. Description adds semantic value: 'positive decimal string' type constraint and 'omit to claim full remaining allowance' usage rule. This fully explains the parameter's purpose and behavior.

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 clearly states the action 'claim synthetic USDX credit from the testnet faucet' and specifies the resource (USDX, testnet) and constraints (daily allowance, default 500 USDX, resets midnight UTC). It distinguishes from sibling 'claim_faucet' by specifying the synthetic USDX nature.

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 description indicates when to use (to get testnet USDX) and explains behavior with optional amount parameter. It does not explicitly state when not to use or name alternatives, but the context is straightforward for a faucet tool.

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