health by fourzerotwo

Spelling suggestions

Correctly spelled RxNorm drug names close to the input.

Spelling suggestions Free

Correctly spelled RxNorm drug names close to the input.

cost: Free then $0.001 / call
MCP tool: rxnorm__spelling
method: GET

Free up to 100 calls a day over MCP (500 with a free key), then $0.001 per call by card credit or USDC. Free key · Pay by card

GET https://fourzerotwo.si/v1/rxnorm/spelling

Param	Type	Description
name	string	Drug name as typed

# free: send a free key from https://fourzerotwo.si/free
curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/rxnorm/spelling?name=amoxicilin"

# no key: returns 402 with the price, for x402 agents
curl -i "https://fourzerotwo.si/v1/rxnorm/spelling?name=amoxicilin"

by fourzerotwo

Report this endpoint

Use it from an AI agent (MCP)

Add the server once, then ask for this data in plain English. The agent finds the endpoint with search_apis and runs it with call_api.

{
  "mcpServers": {
    "fourzerotwo": { "type": "http", "url": "https://fourzerotwo.si/mcp" }
  }
}

# the call the agent makes
call_api {"tool": "rxnorm__spelling", "arguments": {"name":"amoxicilin"}}

More from RxNorm Drug Names

Drug name to RxCUI — Exact (normalised) match of a drug name to its RxNorm concept id(s).
Approximate drug match — Ranked RxNorm candidates for a misspelled or partial drug name.
Clinical & branded drugs — Every clinical drug, branded drug and pack for an ingredient or brand name, grouped by RxNorm term type.
Related concepts — Ingredients, brand names, dose forms and clinical/branded drugs related to an RxCUI.
Concept properties — Name, synonym, term type and active/obsolete status of an RxCUI.
NDC to RxCUI — National Drug Code (10 or 11 digits) to its RxNorm concept and status.
NDCs for an RxCUI — Active National Drug Codes for an RxNorm clinical or branded drug.

This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product. Not medical advice.