RxNorm Query Skill

SkillDev tools

Query the RxNorm drug naming and normalization API. Use whenever the user asks to look up an RxCUI, normalize a drug name, find drug interactions, retrieve brand/trade names, or resolve any clinical drug name via RxNorm. Supports single drug or batch queries. Trigger on mentions of RxNorm, RxCUI, drug normalization, drug interaction lookup, or brand-name resolution.

Instructions available. Your AI can read the instructions. Execution depends on the setup they require.

Account requirements not reviewed. Check the skill instructions before use; ahel provides instructions and does not run this skill.

Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.

Then ask your AI: use the RxNorm Query Skill skill

What this skill tells your AI

The instructions your AI receives, as published by qsong-github/drugclaw in skills/drug_ontology/rxnorm/SKILL.md and read by ahel’s review.

Look up clinical drug information via the RxNorm REST API (no API key required).

Capabilities

Function	Input	Returns
`find_rxcui(name)`	drug name string	RxCUI string or None
`get_drug_info(rxcui)`	RxCUI string	full info dict
`get_drug_interactions(rxcui)`	RxCUI string	list of interaction dicts
`get_related_drugs(rxcui, tty)`	RxCUI + term type	list of related drug dicts
`normalize_drug_name(name)`	approximate drug string	normalized name string
`query(entity)`	str or list[str]	dict keyed by drug name
`summarize(results)`	output of `query()`	compact text summary

Quick Start

from 08_RxNorm import query, summarize

# Single drug
results = query("aspirin")
print(summarize(results))

# Batch drugs
results = query(["tylenol", "metformin", "ibuprofen"])
print(summarize(results))

`query()` Output Schema

{
  "<drug_name>": {
    "rxcui": "1191" | None,
    "normalized_name": "aspirin",
    "interactions": [
      {"description": "...", "severity": "...", "drugs": ["...", "..."]}
    ],
    "related": [
      {"rxcui": "...", "name": "...", "tty": "..."}
    ]
  }
}

Notes

API: RxNorm REST — https://rxnav.nlm.nih.gov/REST
Auth: None required
Rate limits: NLM asks for reasonable use; no hard key-based limit
Related drug types (tty): BN (brand name), SBD (branded dose), SCD (clinical dose), etc.

Signals

GitHub stars: 116
Forks: 3
Last commit: Aug 2026

Advanced

Item type: skill
Key: rxnorm-query
Source: github.com/qsong-github/drugclaw

github.com/qsong-github/drugclaw