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

With no annotations provided, the description carries the full behavioral burden. It explicitly discloses that the tool is free, takes no turn, reads data live from endpoints, and returns current terms. This goes well beyond the basic schema and gives the agent meaningful expectations about side effects and data freshness.

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 three sentences long, front-loaded with the core purpose and key benefit ('[FREE] Get the live x402 payment terms'). Every sentence earns its place: the first defines scope, the second explains data freshness, and the third clarifies side effects and intended usage.

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?

Given zero parameters, no annotations, and the presence of an output schema, the description is complete. It tells the agent exactly what terms are returned, that they are current, and that the tool is a safe zero-cost read with no turn consumption. Nothing necessary for correct invocation is missing.

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 the input schema is empty, so the description adds no parameter-level semantics because none are needed. The baseline for 0-parameter tools is 4, and the description fully explains what the tool returns without requiring parameter explanations.

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 ('Get'), the resource ('live x402 payment terms for playing Venture'), and lists the exact contents (price, payee, network, asset, facilitator, pay-within window, request body). This makes it distinct from sibling tools like venture_market or check_payment_readiness by focusing specifically on payment terms for playing Venture.

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 when to use the tool: before making an x402 payment for Venture, when current terms are needed. It also notes the tool spends nothing and takes no turn, which helps the agent decide to call it freely. However, it does not explicitly mention alternatives or state when not to use it, so usage guidance is more implied than explicit.

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