Create A Budget View Snapshot.

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

The description goes well beyond the sparse annotations by disclosing the non-idempotent behavior ('calling it again creates another record'), the rate limit (one per hour per project/budget view), and the HTTP error patterns (401/403/404). These details help an agent anticipate side effects and failures. No contradiction with annotations.

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 structured with the purpose upfront, followed by behavioral notes, error handling, required parameters, and API context. Each sentence contributes useful information, though the 'Required parameters' line is somewhat redundant with the schema's required array. Overall it remains focused and well-organized.

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 there is no output schema, the description appropriately mentions the return value (new id, HTTP 201) and error payloads. It also covers the rate limit and required parameters, providing enough context for an agent to invoke the tool. While it does not explain feature-gated parameters, those are documented in the schema.

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 covers all 12 parameters with descriptions (100% coverage), so the baseline is 3. The description lists the required parameters (project_id, budget_template_id, name) but adds no new semantic meaning beyond the schema. It does not elaborate on parameter relationships or selection guidance beyond what schema already states.

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 action ('Create a project-level snapshot') and the resource (budget view snapshot), and specifies the two snapshot types. This distinguishes it from listing/retrieval siblings like list_budget_view_snapshots, and from other create tools by naming the exact resource.

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 conveys the primary usage — creating a project-level snapshot — and notes the rate limit constraint. However, it does not explicitly compare with alternatives such as list_budget_view_snapshots or mention when not to use this tool, leaving usage guidance somewhat implied.

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