# rxnorm.drugs.search

Search the NIH RxNorm drug database by generic name, brand name, or ingredient. Returns standardized drug concepts with their RxCUI identifiers, term types (ingredient, brand name, clinical drug, branded drug), and synonyms. RxNorm is the US standard drug nomenclature used by EHRs, pharmacies, and insurers. Use the RxCUI from results with rxnorm.drugs.properties and rxnorm.drugs.class for deeper drug information. Filter by term type (tty) to focus on ingredients (IN), brand names (BN), or clinical drug formulations (SCD/SBD).

Agent View of the PolicyLayer registry record for `rxnorm.drugs.search`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/rxnorm.drugs.search

## Facts

- Tool: `rxnorm.drugs.search`
- Server: Apibase (`apibase-mcp-client`) — https://policylayer.com/tools/io-github-whiteknightonhorse-apibase.md
- Install: `npx -y apibase-mcp-client`
- Homepage: https://github.com/whiteknightonhorse/APIbase
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 3 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `tty` | string | no | Filter by RxNorm term type (TTY). Common values: IN=Ingredient, BN=Brand Name, SCD=Semantic Clinical Drug (includes dose/form), SBD=Semantic Branded Drug. Omit |
| `name` | string | yes | Drug name to search — generic name (e.g. "aspirin"), brand name (e.g. "Tylenol"), or ingredient (e.g. "acetaminophen") |
| `limit` | integer | no | Maximum number of drug concepts to return (1–100, default 20) |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "rxnorm.drugs.search",
    "arguments": {
      "name": "<name>"
    }
  }
}
```

## Why rxnorm.drugs.search is rated Low

Tool queries a public medical database and retrieves drug information without creating, modifying, or deleting data.

From the tool's own definition: "Search NIH RxNorm drug database, returns standardized drug concepts, no modifications."

## Use case

AI agents call rxnorm.drugs.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.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Apibase:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "rxnorm.drugs.search": {}
  }
}
```

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## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-whiteknightonhorse-apibase · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-whiteknightonhorse-apibase