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

Annotations already establish read-only, idempotent, and non-destructive behavior. The description adds valuable context beyond annotations by disclosing pricing ('$1.495 USDC via x402 on Base/Solana') and the output format ('unified git diffs'). No rate limits or failure modes are mentioned, but this is a minor gap given the annotation coverage.

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 two sentences and front-loads the core function before adding the payment note. Every sentence provides unique information with no filler or repetition of the tool name.

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 small parameter set, full schema coverage, and presence of an output schema, the description covers the essential invocation context: inputs, output form, and cost. The only mild gap is not naming a similar sibling, but this is more a differentiation issue than a completeness one.

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 both 'issue' and 'source' adequately described in the input schema. The description reinforces which issue types are relevant, but it adds little new detail about the 'source' parameter or input formatting. With full schema coverage, a baseline score of 3 is appropriate.

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 names a specific action ('Generates'), a concrete deliverable ('ready-to-merge unified git diffs'), and the classes of problems it addresses (security flaws, missing Schema.org tags, performance bottlenecks). This makes the tool's purpose immediately clear and differentiates it from generic audit or analysis siblings.

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 clearly implies when to use it by listing concrete issue categories that trigger use, such as 'security flaws' and 'performance bottlenecks'. It does not explicitly state when not to use it or mention a sibling alternative such as order.ast_remediation, so it stops short of full exclusion guidance.

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