PayPls MCP Server

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It clearly indicates this is a read operation ('List') and specifies the scope of data returned. However, it doesn't mention potential limitations like pagination, rate limits, authentication requirements, or error conditions. The description adds basic context but lacks richer behavioral details.

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, well-structured sentence that efficiently conveys the tool's purpose, scope, and output details. Every word earns its place with no redundancy or unnecessary elaboration. It's front-loaded with the core action and progressively adds specific details.

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 read operation with no annotations and no output schema, the description provides adequate basic information about what the tool does and what data it returns. However, it lacks details about the return format structure, potential limitations, or error handling. Given the simplicity of the tool (no parameters), this is minimally complete but could be more comprehensive.

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 has 0 parameters with 100% schema description coverage (empty schema). The description appropriately doesn't discuss parameters since none exist. It focuses instead on what the tool returns, which is valuable context. A baseline of 4 is appropriate for zero-parameter tools where the description explains the operation's purpose and output.

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 verb ('List') and resource ('all wallet buckets you have access to'), with specific details about what information is included ('balances and auto-approve limits for both BTC and USDC'). It distinguishes itself from siblings like wallet_balance (which likely shows a single balance) and wallet_send_btc/wallet_send_usdc (which are transactional tools).

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 implies usage context by specifying 'you have access to' and listing what information is returned, but doesn't explicitly state when to use this tool versus alternatives like wallet_balance or wallet_tx_status. No explicit exclusions or prerequisites are mentioned, leaving usage guidance at an implied level.

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