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lzinga

US Government Open Data MCP

fred_release_data

Read-only

Bulk fetch economic data releases from FRED, such as GDP, employment, CPI, and interest rates, by release ID with an optional observation limit.

Instructions

Bulk fetch a FRED release. Common: 53 (GDP), 50 (Employment), 10 (CPI), 18 (Rates)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
release_idYese.g. 53 (GDP)
limitNoMax obs
Behavior3/5

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

The annotations already mark the tool as readOnlyHint=true. The description adds 'Bulk fetch' indicating no side effects, and provides common IDs, but does not disclose behavior beyond that (e.g., pagination, rate limits). It adds moderate context beyond annotations.

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?

The description is extremely concise: two short sentences. First sentence states purpose, second provides common examples. No redundant information, every word earns its place.

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 two-parameter, read-only tool, the description covers the essential purpose and common usage. It lacks detail on response format or limit behavior, but the simplicity and annotations compensate. Nearly complete for this tool's complexity.

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 covers 100% of parameters with descriptions. The description adds release ID examples ('Common: 53 (GDP)'), reinforcing the schema's example. Limit parameter is only described as 'Max obs' in both schema and description, no added detail. Adheres to baseline for high schema coverage.

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 purpose: 'Bulk fetch a FRED release.' The verb 'fetch' and resource 'FRED release' are specific. Common release ID examples help distinguish this tool from series-level tools like fred_series_data.

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

Usage Guidelines3/5

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

The description provides common release ID examples (53 GDP, 50 Employment, etc.), hinting at usage, but does not explicitly state when to use this tool versus alternatives like fred_series_data or fred_search. No when-not-to-use guidance is given.

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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