Create Zero-Based Budget Plan

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

The description adds valuable behavioral context beyond annotations: it explains the zero-based budgeting methodology ('Income - Allocations = 0'), mentions it returns a 'ready-to-use budget table', and calls it 'the core tool' for budget creation. While annotations cover safety (readOnly, non-destructive, idempotent), the description provides operational context about what the tool actually produces.

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 efficiently structured in three sentences: first explains what the tool does, second describes the output, third provides usage guidance. Every sentence adds value with zero wasted words, and the most important information (purpose) comes first.

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 creation tool with good annotations and comprehensive schema coverage, the description provides adequate context. It explains the methodology, output format, and primary use case. The main gap is lack of information about the return format (though it mentions a 'budget table'), but since there's no output schema, this would be helpful additional context.

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?

With 100% schema description coverage, the input schema already documents all 8 parameters thoroughly. The description doesn't add specific parameter information beyond what's in the schema, but it does provide context about how parameters relate to the overall budgeting process ('based on income and life situation').

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's purpose with specific verbs ('creates', 'assigns') and resources ('Zero-Based Budget plan', 'budget table'). It distinguishes this tool from siblings by emphasizing it's 'the core tool' for building budgets, unlike analysis or calculation tools in the sibling list.

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 explicitly states when to use this tool: 'when someone wants to build a budget, allocate their income, or create a spending plan.' It positions this as the primary tool for budget creation, distinguishing it from sibling tools like analyze_budget or suggest_budget_categories that serve different purposes.

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