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

No annotations, so the description carries the full burden. It usefully discloses the x402 payment model (4.0 USDC on Base, pay-per-use), which is genuine behavioral context an agent needs before invoking. But it says nothing about whether code is stored, what the review produces, or any limits.

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?

Very short and front-loaded: purpose first, then input format, then cost. Every clause earns its place, though the format token is a little cryptic.

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 single-param tool with no output schema or annotations, the description covers purpose, input encoding, and cost. It stops short of describing the review output or any constraints, leaving it adequate but not fully rounded out.

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 nominally 100% but the schema description is boilerplate ('service input'). The description compensates by giving the actual encoding: input='<lenguaje>||<codigo>', which is real, actionable semantics beyond the schema.

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?

States a specific verb+resource ('Revisión de seguridad de código'), so the agent knows it audits code for security. However, it doesn't distinguish itself from the near-identical sibling 'code-review-security' (or 'code-review', 'technical-audit'), leaving a real ambiguity.

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?

No when-to-use guidance, prerequisites, or alternatives. Given multiple security/review siblings in the same list, the description should route the agent, but it offers nothing beyond the input format.

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