create_sync_watchlist_reorder

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

Annotations already declare readOnlyHint=false, idempotentHint=true, and destructiveHint=false, covering the mutation safety profile. The description adds the HTTP method (POST) and instructs the agent to consult the GET/schema endpoint for expected fields, but does not disclose reorder behavior details such as how ordering conflicts are resolved or whether existing order is replaced wholesale.

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?

Three short sentences with the purpose front-loaded. The HTTP method and the Args pointer each earn their place, and there is no filler or repetition of schema data.

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?

An output schema exists, so return-value documentation is not required. The main gap is that the body payload semantics are delegated entirely to the /schema endpoint, and with an opaque body schema the agent must make an extra call to invoke this correctly; sibling differentiation is also absent.

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 0% and the body parameter is an opaque object with additionalProperties: true, so the description carries the burden. It partially compensates by calling body a "Request payload" and directing the agent to the matching GET or /schema endpoint for field details, but it does not describe any actual fields or structure expected in the payload.

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?

"Reorder watchlist items." uses a specific verb and resource, clearly stating what the tool does. The action+resource combination distinguishes it from siblings like create_sync_watchlist, create_sync_watchlist_remove, and create_sync_favorites_reorder, though it does not explicitly name those alternatives.

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 implies when to use the tool (reordering watchlist items) and adds a prerequisite: "Read the matching GET or the /schema endpoint first to see the fields this resource expects." However, it provides no explicit when-not-to-use guidance or named alternatives among the many create_sync_* siblings.

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