UpdateInterface

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

Annotations are absent, so the description carries the full burden. It discloses that the tool 'Locks, updates, unlocks, and optionally activates' the interface, which is helpful. However, it does not explain what triggers activation, whether unlocking is automatic, or what happens if the interface does not exist (for update scenario). Still, it provides some behavioral context beyond the schema.

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 short but contains redundancy: 'Operation: Update, Create. Subject: Interface.' is nearly restating the name. The sentence 'Will be useful for updating or creating interface' is vague and adds little. It could be more concise by removing the first sentence and focusing on behavioral details.

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?

Given the complexity of updating ABAP interfaces (requires locks, transports, activation) and the presence of CreateInterface sibling, the description is incomplete. It does not explain prerequisites like required authorizations, whether the interface must exist already, or the effect of the 'activate' parameter. Missing details that are not covered by schema or annotations.

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% and each parameter has a clear description. The description adds minimal value beyond the schema, noting 'Locks, updates, unlocks' but not linking to specific parameters. With high schema coverage, baseline is 3. No contradictions or additional parameter context are provided.

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 starts with 'Operation: Update, Create. Subject: Interface' and later says it 'will be useful for updating or creating interface', but the tool is named UpdateInterface and there is a separate CreateInterface sibling. This creates ambiguity about the tool's actual function – is it for updating existing interfaces or also creating new ones? The description does not clearly distinguish its purpose from CreateInterface.

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?

No explicit guidance is provided on when to use this tool versus alternatives like CreateInterface or other update tools. The description mentions updating existing interfaces but also suggests creating, yet offers no criteria for choosing this tool over CreateInterface. Missing context on prerequisites or when to use.

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