start_print_job

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

No annotations are provided, so the description carries the full behavioral burden, and it only restates the action. It says nothing about authentication needs (bambu_token/serial), that the action is irreversible once extrusion begins, or that cancel_print exists as the recovery path. For a tool that physically actuates hardware this is a significant gap.

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?

One front-loaded sentence with zero filler, and the precondition is stated first. It is efficient, though arguably under-specified for the risk level of the operation.

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?

With no annotations and no output schema, the description is the only source of behavioral context, and it omits permissions, irreversibility, and post-start behavior. For a hardware-mutating tool it should do substantially more.

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%, so both required and optional parameters are already documented, including the model-safety warning and enum. The description adds no parameter-level meaning beyond the schema, so it lands 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?

States a specific verb (start printing) and resource (a G-code file already on the printer), and the phrase 'already on the printer' implicitly distinguishes it from siblings like print_3mf or upload_gcode. However, it never explicitly names the near-identical sibling start_print, so an agent could confuse the two.

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 precondition that the file must already exist on the printer is implied, which is useful routing context versus print_3mf/print_3mf_bambu_network. But there is no explicit when-to-use, when-not-to-use, or named alternative, so selection between this and start_print remains guesswork.

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