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lzinga

US Government Open Data MCP

fda_device_registrations

Read-only

Search medical device establishment registrations and listings to locate manufacturing facilities and their associated products.

Instructions

Search medical device establishment registrations & listings (336K+ records). Where devices are manufactured and which devices are made at each establishment.

Example searches:

  • 'products.product_code:HQY' — establishments making product code HQY

  • 'products.openfda.regulation_number:886.5850' — by regulation number

Count fields: products.openfda.device_class

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
searchNoOpenFDA search query. Examples: 'field:value', 'field:"Exact Phrase"', 'field:[20200101+TO+20231231]', '_exists_:field'. Combine with '+AND+', '+OR+', '+NOT+'.
limitNoMax results (default 10, max 100)
Behavior3/5

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

Annotations already declare readOnlyHint=true. Description adds context about record count and count field, but does not address auth, rate limits, or other behavioral traits beyond the read-only nature.

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?

Very concise, front-loaded with purpose, each sentence adds meaningful information. No wasted 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?

Adequate for a 2-param read-only tool with full schema coverage. Could mention pagination or return format, but not essential given simplicity.

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

Parameters4/5

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

Schema already fully describes both parameters. Description adds value with concrete example searches and hints for count fields, going beyond the schema's parameter descriptions.

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?

Clearly states the tool searches medical device establishment registrations & listings, describes what info it returns, and differentiates from other FDA device tools by focusing on establishment location and product connections.

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 vs alternatives among many FDA tools. Only implicit through naming. Missing when-not-to-use and comparison to siblings.

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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