UpdateServiceDefinition

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

With no annotations provided, the description carries the full burden. It adds some behavioral context by stating the tool 'Locks, updates, unlocks, and optionally activates', which is useful. However, it does not disclose side effects, permission requirements, or error conditions, leaving gaps.

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 somewhat redundant, starting with metadata-like phrases ('Operation: Update, Create') then repeating similar ideas. It could be more concise and focused. The structure is not optimal.

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 that the tool is a mutation operation with no output schema and no annotations, the description should provide more context such as return values, prerequisites, or confirmation steps. It mentions optional activation but lacks completeness.

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 has 100% description coverage so the schema already explains all four parameters. The description adds minimal extra value, only noting the optional activation. 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 description mentions both 'Update' and 'Create', but the tool name and the specific action 'Update source code of an existing ABAP service definition' indicate it is primarily an update tool. The mixed messaging reduces clarity, and while siblings include CreateServiceDefinition, the description does not clearly distinguish this tool from that one.

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 provides no explicit guidance on when to use this tool versus alternatives like CreateServiceDefinition or other update tools. It vaguely says 'useful for updating or creating', but fails to specify scenarios or prerequisites.

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