Payment and wallet setup

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

Annotations already disclose readOnlyHint=true, idempotentHint=true, and destructiveHint=false, and the description does not contradict them. It adds context about the informational content (payment method, what it unlocks, install commands), which is consistent and transparent for a read-only info tool, but it does not add operational details beyond that.

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 with no waste. The main topic is front-loaded in the first sentence, and the second sentence lists included one-liners. Every clause earns its place.

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 0-parameter read-only informational tool with an output schema, the description fully conveys what the tool covers and what content to expect. Nothing critical is missing for an agent to decide to invoke it.

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 zero parameters and schema coverage is trivially 100%. With no parameters to document, the description does not need to compensate for missing parameter information, so the baseline of 4 applies.

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 what the tool does: explain how the MCP server pays for Agent402 calls, contrasting USDC wallet vs proof-of-work, and what that unlocks. It also mentions included Claude Code / Cursor / npm install one-liners. This specific scope distinguishes it from sibling tools like server.describe and the web/market 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: agents should use this tool for payment/wallet setup questions or install one-liners. However, it does not explicitly state when to use it over alternatives or when not to use it, leaving some inference to the agent.

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