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lzinga

US Government Open Data MCP

usa_spending_by_state

Read-only

Retrieve federal spending data by state, including total awards and per-capita amounts for any fiscal year.

Instructions

Get federal spending by state or territory. Shows total awards and per-capita spending.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
stateNoTwo-letter state code (e.g. 'CA'). Omit for all states.
fiscal_yearNoFiscal year (default: most recent)
Behavior3/5

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

Annotations already declare readOnlyHint=true. The description adds the output details (total awards and per-capita spending) but does not disclose data source freshness, rate limits, or other behavioral traits.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two succinct sentences, front-loaded with the core purpose. No redundant words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple 2-parameter tool with annotations, the description sufficiently covers what the tool returns. It is complete enough for basic usage.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with adequate parameter descriptions. The description adds minimal extra meaning beyond the schema, only hinting at the output metrics.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool retrieves federal spending by state or territory, showing total awards and per-capita spending. This is a specific verb+resource and distinguishes it from siblings like usa_spending_by_agency.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool versus alternatives (e.g., other USAspending tools). The description does not mention prerequisites or scope limitations.

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

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