fourzerotwo-si

fourzerotwo-si Rxnorm API

RxNorm Drug Names: Normalise US drug names: name or misspelling to RxCUI, clinical and branded drugs, ingredients and brands, NDC lookups and concept properties.

Documentation GitHub OpenAPI

Operations 8

GET /v1/rxnorm/rxcui RxNorm Drug Names: Drug name to RxCUI #

GET /v1/rxnorm/approximate RxNorm Drug Names: Approximate drug match #

GET /v1/rxnorm/spelling RxNorm Drug Names: Spelling suggestions #

GET /v1/rxnorm/drugs RxNorm Drug Names: Clinical & branded drugs #

GET /v1/rxnorm/related RxNorm Drug Names: Related concepts #

GET /v1/rxnorm/properties RxNorm Drug Names: Concept properties #

GET /v1/rxnorm/ndc RxNorm Drug Names: NDC to RxCUI #

GET /v1/rxnorm/ndcs RxNorm Drug Names: NDCs for an RxCUI #

Specifications

⚙

OpenAPI

https://artifacts.apis.io/fourzerotwo-si/openapi/fourzerotwo-si-rxnorm-api-openapi.yml

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Fourzerotwo Si Rxnorm API
  version: 1.1.0
  contact:
    url: https://fourzerotwo.si
  description: 'Operations tagged rxnorm across 2 of this provider''s published API definitions: openapi.json, fourzerotwo-si-openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://fourzerotwo.si
tags:
- name: rxnorm
  description: 'RxNorm Drug Names: Normalise US drug names: name or misspelling to RxCUI, clinical and branded drugs, ingredients and brands, NDC lookups and concept properties.'
paths:
  /v1/rxnorm/rxcui:
    get:
      operationId: rxnorm__rxcui
      summary: 'RxNorm Drug Names: Drug name to RxCUI'
      description: 'Exact (normalised) match of a drug name to its RxNorm concept id(s). Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - rxnorm
      externalDocs:
        url: https://fourzerotwo.si/apis/rxnorm/rxcui
      parameters:
      - name: name
        in: query
        required: true
        description: Drug name (ingredient or brand)
        schema:
          type: string
          maxLength: 200
        example: atorvastatin
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: rxnorm__rxcui
    servers:
    - url: https://fourzerotwo.si
  /v1/rxnorm/approximate:
    get:
      operationId: rxnorm__approximate
      summary: 'RxNorm Drug Names: Approximate drug match'
      description: 'Ranked RxNorm candidates for a misspelled or partial drug name. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - rxnorm
      externalDocs:
        url: https://fourzerotwo.si/apis/rxnorm/approximate
      parameters:
      - name: term
        in: query
        required: true
        description: Drug name, possibly misspelled
        schema:
          type: string
          maxLength: 200
        example: ibuprofn
      - name: limit
        in: query
        required: false
        description: Max candidates (1-20)
        schema:
          type: integer
        example: 5
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.002000'
      x-free-tier: free
      x-mcp-tool: rxnorm__approximate
    servers:
    - url: https://fourzerotwo.si
  /v1/rxnorm/spelling:
    get:
      operationId: rxnorm__spelling
      summary: 'RxNorm Drug Names: Spelling suggestions'
      description: 'Correctly spelled RxNorm drug names close to the input. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - rxnorm
      externalDocs:
        url: https://fourzerotwo.si/apis/rxnorm/spelling
      parameters:
      - name: name
        in: query
        required: true
        description: Drug name as typed
        schema:
          type: string
          maxLength: 200
        example: amoxicilin
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: rxnorm__spelling
    servers:
    - url: https://fourzerotwo.si
  /v1/rxnorm/drugs:
    get:
      operationId: rxnorm__drugs
      summary: 'RxNorm Drug Names: Clinical & branded drugs'
      description: 'Every clinical drug, branded drug and pack for an ingredient or brand name, grouped by RxNorm term type. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - rxnorm
      externalDocs:
        url: https://fourzerotwo.si/apis/rxnorm/drugs
      parameters:
      - name: name
        in: query
        required: true
        description: Drug name (ingredient or brand)
        schema:
          type: string
          maxLength: 200
        example: atorvastatin
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.002000'
      x-free-tier: free
      x-mcp-tool: rxnorm__drugs
    servers:
    - url: https://fourzerotwo.si
  /v1/rxnorm/related:
    get:
      operationId: rxnorm__related
      summary: 'RxNorm Drug Names: Related concepts'
      description: 'Ingredients, brand names, dose forms and clinical/branded drugs related to an RxCUI. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - rxnorm
      externalDocs:
        url: https://fourzerotwo.si/apis/rxnorm/related
      parameters:
      - name: rxcui
        in: query
        required: true
        description: RxNorm concept id (RxCUI)
        schema:
          type: string
          maxLength: 10
        example: '83367'
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.002000'
      x-free-tier: free
      x-mcp-tool: rxnorm__related
    servers:
    - url: https://fourzerotwo.si
  /v1/rxnorm/properties:
    get:
      operationId: rxnorm__properties
      summary: 'RxNorm Drug Names: Concept properties'
      description: 'Name, synonym, term type and active/obsolete status of an RxCUI. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - rxnorm
      externalDocs:
        url: https://fourzerotwo.si/apis/rxnorm/properties
      parameters:
      - name: rxcui
        in: query
        required: true
        description: RxNorm concept id (RxCUI)
        schema:
          type: string
          maxLength: 10
        example: '83367'
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: rxnorm__properties
    servers:
    - url: https://fourzerotwo.si
  /v1/rxnorm/ndc:
    get:
      operationId: rxnorm__ndc
      summary: 'RxNorm Drug Names: NDC to RxCUI'
      description: 'National Drug Code (10 or 11 digits) to its RxNorm concept and status. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - rxnorm
      externalDocs:
        url: https://fourzerotwo.si/apis/rxnorm/ndc
      parameters:
      - name: ndc
        in: query
        required: true
        description: NDC with or without hyphens
        schema:
          type: string
          maxLength: 13
        example: '00071015523'
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: rxnorm__ndc
    servers:
    - url: https://fourzerotwo.si
  /v1/rxnorm/ndcs:
    get:
      operationId: rxnorm__ndcs
      summary: 'RxNorm Drug Names: NDCs for an RxCUI'
      description: 'Active National Drug Codes for an RxNorm clinical or branded drug. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - rxnorm
      externalDocs:
        url: https://fourzerotwo.si/apis/rxnorm/ndcs
      parameters:
      - name: rxcui
        in: query
        required: true
        description: RxCUI of a clinical/branded drug
        schema:
          type: string
          maxLength: 10
        example: '617314'
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: rxnorm__ndcs
    servers:
    - url: https://fourzerotwo.si
components:
  responses:
    PaymentRequired:
      description: x402 payment required. The body (also base64 in the PAYMENT-REQUIRED header) lists accepted payments.
      headers:
        PAYMENT-REQUIRED:
          schema:
            type: string
          description: Base64 JSON x402 v2 PaymentRequired
      content:
        application/json:
          schema:
            type: object
            properties:
              x402Version:
                type: integer
              error:
                type: string
              accepts:
                type: array
                items:
                  type: object
    Error:
      description: 400 = invalid input, 404 = not found at the source, 502 = the source failed. Never charged.
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: string
              charged:
                type: boolean
  securitySchemes:
    freeKey:
      type: apiKey
      in: header
      name: X-API-Key
      description: Optional free key (fzt_…) for the free tier.
x-refined-from:
- openapi.json
- fourzerotwo-si-openapi.json