xrp_fund_testnet_account

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

With no annotations, the description carries the full burden. It accurately states the core behavior (funding a testnet account with test XRP) but does not disclose potential side effects, prerequisites, or whether the operation is reversible. The statement is clear but minimal.

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 a single sentence that is front-loaded and directly states the action. Every word contributes to clarity, with no redundant or filler content.

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 tool with one parameter and no output schema, the description is largely sufficient. It clearly communicates the tool's purpose and the parameter's role. However, it omits any mention of constraints (e.g., address must be a testnet address) or what happens after successful funding, but these are not critical for basic usage.

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 the parameter 'address' described as 'Address to fund'. The description adds no additional meaning beyond this, so the baseline score of 3 is appropriate; the schema already documents the parameter adequately.

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 a specific verb ('Fund') and clearly identifies the resource ('a testnet account') and the object ('test XRP'). It distinguishes itself from sibling tools like xrp_send_transaction or xrp_create_wallet by explicitly targeting testnet funding.

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?

No guidance is provided on when to use this tool versus alternatives. There is no mention of e.g., using this instead of xrp_send_transaction for testnet purposes, or any prerequisites like needing a testnet address.

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