Build and run a Playdate project

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

Annotations already signal destructiveHint=true, readOnlyHint=false, and openWorldHint=true. The description adds orchestration detail—builds, launches, injects, loads—so the agent understands the tool has side effects beyond a simple read or load. No contradiction with annotations.

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, no filler. The action sequence is front-loaded, and the usage context is stated plainly in the second sentence. Every word earns its place.

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 description effectively captures the tool's orchestration purpose and its role as the standard entry point. Given the output schema exists and parameter details are covered, the main missing piece is explicit guidance on when to use a lighter sibling instead, but the overall workflow context is sufficient.

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 parameters like product_path, pid, build_task, and project_directory are already documented structurally. The description does not add parameter-level meaning beyond mentioning that the project's build task is run and the PDX is loaded, which is acceptable given full schema coverage.

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 multi-step verb sequence: run the mise build task, launch or find the Simulator, inject the control agent, and load the PDX. This clearly identifies the tool's role and distinguishes it from narrower siblings like playdate_load or playdate_inject by presenting it as the full first-call workflow.

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 phrase 'This is the normal first call and reload workflow' gives clear contextual guidance on when to invoke this tool. It does not explicitly list when to prefer alternatives such as playdate_load or playdate_inject, but the normal-workflow framing provides enough direction.

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