subscriptions-and-session-keys

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

No annotations are provided, so the description bears the full burden. It conveys that this is a lesson about scope-discipline rules, suggesting an informational, read-only behavior, but it never explicitly states the return format, side effects, or prerequisites. For a no-parameter content tool this is minimally adequate but not rich.

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 only two sentences, with the first sentence identifying the resource and the second summarizing the lesson's substance. Every clause adds value and the key phrase 'Lesson 15' is front-loaded.

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 the tool's low complexity (no parameters, no output schema), the description supplies enough topical context and boundaries to decide whether to use it. It could be slightly stronger by stating the expected outcome of invoking the lesson, but the current content is sufficient for selection.

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 input schema is empty with zero parameters, and schema description coverage is 100%. The rubric baseline for zero parameters is 4, and the description correctly avoids inventing parameter details; no additional parameter semantics are possible or necessary.

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 explicitly identifies the tool as 'Lesson 15 of the curriculum' and pinpoints the exact topic: ERC-7715 scoped autonomy, with concrete learning points ('approve once, spend within bounds', 'when to ask, when to refuse'). This clearly differentiates it from sibling tools such as 'what-is-x402' or 'how-do-i-pay' by naming a unique lesson and subject.

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 phrase 'Lesson 15 of the curriculum' implies sequential use within the curriculum, but it does not explicitly state when to choose this tool over alternatives or when not to use it. No exclusions or alternative tool references are provided, so usage is implied rather than explicit.

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