cms.hospital.search
Search 5 400+ US hospitals in the CMS Provider Data catalog with quality star ratings (1–5 stars). Filter by state, city, ZIP code, hospital name, hospital type (Acute Care, Critical Access, Childrens, Psychiatric, Rehabilitation), and minimum overall rating. Returns CMS Certification Number (CCN...
This record as markdown: /tools/io-github-whiteknightonhorse-apibase/cms.hospital.search.md
What cms.hospital.search does on Apibase
AI agents call cms.hospital.search to retrieve information from Apibase without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
city | string | — | City or town name to filter hospitals (partial match, case-insensitive). Example: "Los Angeles", "Boston". |
name | string | — | Partial hospital name to search (case-insensitive substring match). Example: "Memorial", "General Hospital", "St. Mary". |
limit | integer | — | Maximum number of hospitals to return (1–100, default 20). |
state | string | — | Two-letter US state abbreviation to filter hospitals (e.g. CA, NY, TX). Returns all hospitals in the state when specified. |
offset | integer | — | Number of results to skip for pagination (default 0). |
zip_code | string | — | 5-digit US ZIP code to filter hospitals by location. Example: "90210", "10001". |
min_rating | integer | — | Minimum CMS Overall Hospital Star Rating (1–5 stars). Filter to only return hospitals with rating >= this value. Example: 4 returns 4-star and 5-star hospitals |
hospital_type | string | — | Filter by hospital type classification. Most common: "Acute Care Hospitals" (general hospitals), "Critical Access Hospitals" (rural/small), "Childrens" (pediatr |
Parameters from the server's own tool schema.
Why cms.hospital.search is rated Low
Tool queries public CMS hospital data without modifying, executing code, or financial effects.
From the tool's definition Search hospitals, filter by state/city/name, returns facility data and ratings.
Attacks that exploit this kind of access
The rule that runs cms.hospital.search safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Apibase, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cms.hospital.search, this is the rule to start with:
cms.hospital.search is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Apibase, apply this rule, and every cms.hospital.search call is checked against it from then on.
Questions about cms.hospital.search
Search 5 400+ US hospitals in the CMS Provider Data catalog with quality star ratings (1–5 stars). Filter by state, city, ZIP code, hospital name, hospital type (Acute Care, Critical Access, Childrens, Psychiatric, Rehabilitation), and minimum overall rating. Returns CMS Certification Number (CCN), facility name, address, phone, hospital type, ownership, emergency services flag, and overall star rating. Star ratings are composite scores from CMS Hospital Compare — 5 stars = top quality. Covers all Medicare/Medicaid-certified hospitals. No auth — US Centers for Medicare & Medicaid Services public domain, unlimited free. It is categorised as a Read tool in the Apibase MCP Server, which means it retrieves data without modifying state.
cms.hospital.search accepts 8 parameters: city, name, limit, state, offset, zip_code, min_rating, hospital_type. The full parameter table on this page comes from the server's own tool schema.
Register the Apibase MCP server in PolicyLayer and add a rule for cms.hospital.search: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Apibase. Nothing to install.
cms.hospital.search is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the cms.hospital.search rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for cms.hospital.search. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
cms.hospital.search is provided by the Apibase MCP server (apibase-mcp-client). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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