Create Direct Upload

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

Annotations already declare readOnlyHint=false, destructiveHint=true, openWorldHint=true and idempotentHint=false, so the safety profile is covered. The description adds one genuinely useful fact not in the annotations: that confirm=true is required. It does not explain what state is changed, what is destroyed, or what credentials/response come back.

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?

Only two short sentences, so there is no bloat, but the first sentence is pure name restatement and earns nothing. It is terse rather than efficiently informative.

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?

This is a 5-parameter mutation tool with nested objects (blob inside payload), no output schema, and 0 required params, so the description carries real explanatory burden. It says nothing about the blob/payload selection logic, the account credential scoping, the 5 MB payload_file limit, or what the caller receives back.

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 80%, so the schema already documents blob, account, confirm, payload and payload_file. The description contributes nothing beyond echoing confirm, so baseline 3 is appropriate.

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 first sentence is a verbatim restatement of the tool name ('Create Direct Upload'), which is a tautology. It never says what a 'direct upload' actually is or what object it creates (e.g., a blob/upload target), so an agent cannot distinguish this from siblings like create_image_post or create_post without opening the schema.

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 only says the tool 'changes community state' and that confirm must be true 'for the user-requested action' — a restatement of the confirm parameter's own schema text. It gives no when-to-use condition, no prerequisites (e.g., account selection), and names no alternatives among the many create_* siblings.

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