Criar cobrança Pix imediata sem txid

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

Annotations indicate the tool is not read-only, not idempotent, and has open world effects. The description adds that the txid is auto-assigned by Efí, which provides useful behavioral context beyond annotations. No contradictions.

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?

Two sentences, succinct and front-loaded. The first sentence states the action, the second provides usage guidance. No unnecessary words.

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 complex nested input schema and presence of an output schema, the description focuses on the key differentiator (auto-assigned txid) and use case. It is slightly brief but sufficient for tool selection, as the schema handles parameter details.

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%, so the baseline is 3. The description provides no additional information about parameters beyond what the schema already includes, so it does not enhance understanding of the input fields.

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 tool creates an immediate Pix charge and lets the system assign the txid. It also distinguishes from siblings by specifying 'without txid' in the title and describing the use case for when the application doesn't need to pre-select the identifier.

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 explicitly says 'Use when the application does not need to previously choose the charge identifier,' providing clear context for when to use this tool. It implies alternatives for when a specific txid is needed but does not name them explicitly.

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