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

Annotations declare idempotentHint=true and destructiveHint=false, and the description reinforces this by disclosing the get-or-create behavior, which is meaningful beyond the hint alone. It does not cover permissions, return payload shape, or what happens if the name collides with an unrelated folder, but with the safety profile already in annotations a 4 is warranted.

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 with no filler, front-loading the create-or-get behavior and then the sequencing instruction. Every clause carries actionable information.

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-parameter container tool with no output schema, the definition covers purpose, precondition, idempotency and the handoff to dependent tools. Nothing an agent needs to call it correctly is missing.

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 baseline is 3, but the description adds semantic role beyond the schema: folderName acts as the shared solution identifier that must be reused across ap_create_flow, ap_build_flow and ap_create_table. Format constraints (maxLength 255, minLength 1) are left to 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?

The description gives a specific verb and resource ('Create a folder to hold one solution's flows and tables') and immediately clarifies the upsert nature ('or get it if a folder with that name already exists'). This distinguishes it cleanly from siblings like ap_create_flow and ap_create_table, which create the contents rather than the container.

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?

It states exactly when to call it ('once before building a solution of several flows and tables') and names the downstream tools that consume the result (ap_create_flow, ap_build_flow, ap_create_table) along with the value to pass. The when-to-use condition and the follow-up chain are explicit, leaving nothing to inference.

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