Settings: update postingaccount

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

The description adds the critical behavioral detail that it 'overwrites the fields you send,' which goes beyond what annotations state. It also advises reading the record first, indicating the overwrite semantics. This is consistent with readOnlyHint: false and doesn't contradict any annotation. It doesn't mention idempotency, but that's already covered by idempotentHint: true.

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?

The description is compact and front-loads key information like the overwrite behavior and the advice to read the record first. The structure is clear with a heading and bullet. However, it starts with an emoji and 'WRITE' which adds visual noise and is unnecessary, slightly detracting from conciseness.

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 simple update tool with two parameters and an output schema, the description covers purpose, usage, and the crucial overwrite behavior. It doesn't discuss error handling or non-existent records, but that's not essential for this simple operation. The guidance to read the record first is valuable. Overall, it's complete for the tool's complexity.

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?

The input schema already documents both parameters with clear descriptions (name = new name, postingaccount_number = number to update). The description mentions 'rename a posting account or change its properties' but doesn't add parameter-specific detail beyond what the schema provides. Since schema coverage is 100%, the description adds little value here.

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 clearly states the tool updates an existing postingaccount, with specific use cases (rename or change properties). It distinguishes from the list tool by referencing postingaccounts_list for reading, and the verb 'update' is precise. While it doesn't explicitly contrast with postingaccounts_create, the name and context make the purpose unambiguous.

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 provides clear guidance on when to use: for renaming or changing properties. It also advises reading the current record first for partial changes, which is a practical tip. It doesn't explicitly name alternatives like postingaccounts_create, but the context implies that creation would be a different tool, so it's effective.

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