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

With no annotations, the description carries the full burden of behavioral disclosure, yet it only exposes the payment aspect (0.02 USDC on Base, pay-per-use). It does not state what the tool does, what side effects (if any) occur, what auth is needed, or what the response looks like.

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 text is short, but it is a fragment rather than a well-structured tool description, and it fails to front-load any purpose. The only substantive content is pricing, which does not earn its place in a tool definition.

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?

The tool is extremely simple (one required parameter, no output schema), yet the description provides no functional context whatsoever. An agent cannot infer what 'codigo' accepts, produces, or why to call 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?

Schema description coverage is 100% (one required 'input' string, described only as 'entrada'), so the baseline is 3. The tool description adds no extra meaning to the parameter, but the high coverage keeps this at the baseline.

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 'Auto-created from real demand (75 requests) [x402: 0.02 USDC on Base, pay-per-use]' contains no verb, no resource, and no action. It only describes provenance and pricing, leaving the tool's function completely unspecified and indistinguishable from sibling code tools like code-gen and code-explain.

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 guidance is provided about when to use this tool or which alternatives might be preferable. The mention of 'real demand' hints at popularity but offers no context for selecting this tool over the many code-related siblings.

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