RxNorm MCP by usefulapi

io.usefulapiPublished by usefulapi.ioOfficial publisherv1.39.2Updated Nov 14, 2026

Look up drug names, RxCUIs, ingredients and interactions in RxNorm.

The publisher's own server: Ably MCP by usefulapi

VerifiedStreamable HTTPWeb executableLocation & LifestyleData & Analytics

Overview

AI-generated overview

Hosted RxNorm server that lets an assistant resolve drug names to RxCUIs, inspect concepts, NDCs and drug classes.

What you can do
  • Resolve drug names to RxNorm concept IDs and search drug products by name
  • Read concept properties, named properties, history status and term types
  • Explore related concepts, all related concepts and NDC codes for a concept
  • Handle messy names with spelling suggestions and approximate matching
  • Look up drug classes for a drug and list the drugs in a class
  • Check usage, request a feature, upgrade or cancel a plan
When to use it
Useful when you need standard drug identifiers, ingredient or class information, or NDC mappings while working with medication names, and want that lookup done inside the assistant without a local install.
Requirements
Remote MCP endpoint over streamable HTTP; no local package. Sign-in uses OAuth with an email address and a 6-digit code sent by email; no API key or Authorization header should be added. Network access required.
Before you install
Free plan is limited to 50 tool calls per month; paid plans cost $9/month (Pro) or $39/month (Pro+) and are billed through a Stripe checkout link, with upgrades charging the price difference immediately and no refund on cancellation. The server asks for your email address and keeps a one-way hash as account id. Lookup tools are read-only, but subscription tools change billing state.

Installation

In SourceWeft

  1. Open RxNorm MCP by usefulapi in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.usefulapi%2Frxnorm/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "rxnorm-by-usefulapi": {
      "type": "http",
      "url": "https://rxnorm.usefulapi.io/mcp"
    }
  }
}

README

RxNorm MCP by usefulapi

Look up drug names, RxCUIs, ingredients and interactions in RxNorm. Hosted, no local install.

Live endpoint: https://rxnorm.usefulapi.io/mcp · Homepage: https://usefulapi.io

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://rxnorm.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http rxnorm https://rxnorm.usefulapi.io/mcp, then run /mcp to log in.
  • VS Code: Add to VS Code.
  • Cursor and other clients: add the URL as a remote MCP server:
json
{  "mcpServers": {    "rxnorm": {      "url": "https://rxnorm.usefulapi.io/mcp"    }  }}

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your email address and a 6-digit code.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/rxnorm/

This server needs no credential — RxNorm is a public data source. On first connect you log in with your email: we send a 6-digit code from [email protected]. The address is used only to send the code; we keep a one-way hash of it as your account id, so your free calls and your plan stay yours.

Tools

ToolTypeWhat it does
rxnorm_find_rxcui_by_namereadFind RxCUI by name
rxnorm_get_drugsreadSearch drugs by name
rxnorm_get_concept_propertiesreadGet concept properties
rxnorm_get_related_by_typereadGet related concepts by type
rxnorm_get_all_relatedreadGet all related concepts
rxnorm_get_ndcsreadGet NDCs for a concept
rxnorm_get_history_statusreadGet concept history / status
rxnorm_get_propertyreadGet concept property
rxnorm_get_spelling_suggestionsreadGet spelling suggestions
rxnorm_get_approximate_matchreadApproximate term match
rxnorm_get_term_typesreadList term types
rxnorm_get_drug_classesreadGet drug classes for a drug
rxnorm_get_class_membersreadGet drug class members
rxnorm_usage_statusmetaUsage status (free-tier meter)
rxnorm_request_featuremetaRequest a missing feature
rxnorm_upgrademetaUpgrade to Pro or Pro+
rxnorm_cancel_subscriptionmetaCancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Pro$9/mo or $90/yr (2 months free)10,000 tool calls / month
Pro+$39/mo or $390/yr (2 months free)100,000 tool calls / month

Each paid plan covers this server only. Ask your AI to run rxnorm_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with rxnorm_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with rxnorm_upgrade before then undoes the cancel. Or write to [email protected].

License

MIT

Source: servers/rxnorm/README.md at commit f22f848

Tools

13

rxnorm_find_rxcui_by_name

Find RxCUI by name

Find RxNorm concept IDs (RxCUIs) matching a drug name string. RxNav REST: GET /rxcui.

Parametersnamerequiredallsrcsearch

rxnorm_get_drugs

Search drugs by name

Search drug products (all term types) matching a name, grouped by concept type. RxNav REST: GET /drugs.

Parametersnamerequiredexpand

rxnorm_get_concept_properties

Get concept properties

Get the RxNorm properties (name, synonym, tty, language, suppress, umlscui) of a concept. RxNav REST: GET /rxcui/{rxcui}/properties.

Parametersrxcuirequired

rxnorm_get_ndcs

Get NDCs for a concept

Get the NDCs (National Drug Codes) associated with a concept. RxNav REST: GET /rxcui/{rxcui}/ndcs.

Parametersrxcuirequired

rxnorm_get_history_status

Get concept history / status

Get the status, history and attributes of a concept (active, remapped, quantified, etc). RxNav REST: GET /rxcui/{rxcui}/historystatus.

Parametersrxcuirequired

rxnorm_get_property

Get concept property

Get a named property (category, name, value) of a concept, e.g. ATC code or a synonym. RxNav REST: GET /rxcui/{rxcui}/property.

ParametersrxcuirequiredpropNamerequired

rxnorm_get_spelling_suggestions

Get spelling suggestions

Get spelling suggestions for a possibly-misspelled drug name. RxNav REST: GET /spellingsuggestions.

Parametersnamerequired

rxnorm_get_approximate_match

Approximate term match

Fuzzy match a term against RxNorm names — tolerant of abbreviations, misspellings, and extra words. RxNav REST: GET /approximateTerm.

ParameterstermrequiredoptionmaxEntries

rxnorm_get_term_types

List term types

List all RxNorm term types (metadata), e.g. SCD, SBD, IN, BN. RxNav REST: GET /termtypes.

Takes no parameters.

rxnorm_get_drug_classes

Get drug classes for a drug

Get the drug classes that contain a drug, by drug name (RxClass API). RxNav REST: GET /rxclass/class/byDrugName.

ParametersrelasdrugNamerequiredrelaSource

rxnorm_get_class_members

Get drug class members

Get the drugs belonging to a drug class (RxClass API). RxNav REST: GET /rxclass/classMembers.

ParametersrelattystransclassIdrequiredrelaSourcerequired

Version history

26
  1. v1.39.2LatestNov 14, 2026
  2. v1.39.1Nov 13, 2026
  3. v1.38.0Nov 12, 2026
  4. v1.37.3Nov 11, 2026
  5. v1.36.5Nov 8, 2026
  6. v1.36.4Nov 7, 2026
  7. v1.35.3Nov 5, 2026
  8. v1.35.2Nov 5, 2026
  9. v1.35.1Nov 4, 2026
  10. v1.35.0Nov 3, 2026
  11. v1.34.1Nov 3, 2026
  12. v1.33.0Nov 1, 2026
  13. v1.31.0Oct 31, 2026
  14. v1.30.0Oct 31, 2026
  15. v1.29.2Oct 30, 2026
  16. v1.29.0Oct 30, 2026
  17. v1.24.0Oct 26, 2026
  18. v1.21.3Oct 25, 2026
  19. v1.21.0Oct 25, 2026
  20. v1.20.0Oct 24, 2026
  21. v1.17.0Oct 23, 2026
  22. v1.16.4Oct 22, 2026
  23. v1.16.3Oct 21, 2026
  24. v1.11.1Oct 9, 2026
  25. v1.10.0Oct 9, 2026
  26. v1.0.0Sep 29, 2026

Score

100% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

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