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

Annotations are present but provide no constraints (all false). The description only says 'creates', implying mutation, but adds no detail on side effects, permissions, idempotency, or what happens to existing data. Behavioral context is minimal beyond the annotation defaults.

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 extremely concise at four words, with no redundant information. However, it is perhaps too brief for a tool with nested objects and an output schema. Overall, it is well-structured but borderline under-specified.

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?

Despite having an output schema and complex parameters, the description provides no context about return values, usage examples, or how it differs from 'update_bill'. The tool is adequately documented via schema but lacks contextual completeness for an AI agent to use effectively.

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% with descriptions for all parameters. The description adds no additional meaning beyond the schema, so the baseline score of 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 'Creates a new bill' clearly states the verb (creates) and resource (bill). It distinguishes from siblings like 'update_bill' and 'set_bill_selections_batch', though it does not elaborate on what a 'bill' represents in this context. Overall, it is clear and specific enough.

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 guidance is provided on when to use this tool versus siblings. The description does not mention any prerequisites, conditions, or scenarios where this tool is preferred. This is a significant gap given the presence of related tools.

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