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RxNorm MCP by usefulapi MCP Server

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RxNorm MCP by usefulapi is answering right now. Last checked 11 min ago. It exposes 13 tools. Last commit 2 Nov 2026.

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

Uptime history 34 days of history · worst day 99%
34 days agonow
100.0%
Uptime 24h
91 of 91 checks
13
Tools
read from the server
160 ms
Response time
average over 24h
1
Stars
last commit 2 Nov 2026

What changed 30

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 1 October 2026. No other catalogue keeps this.

2 Nov a tool changed version
31 Oct a tool changed version4 times that day
30 Oct a tool changed version2 times that day
29 Oct a tool changed version2 times that day
28 Oct a tool changed version2 times that day
25 Oct a tool changed version4 times that day
24 Oct a tool changed version3 times that day
23 Oct a tool changed version
22 Oct a tool changed version
20 Oct a tool changed version3 times that day
and 20 more, back to 1 October 2026

What the code does

We read the source, 22 h ago · tools taken from the live server · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

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Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

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Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.

run in your terminal
claude mcp add rxnorm --transport http https://rxnorm.usefulapi.io/mcp
Settings → Connectors → Add custom connector, then paste this address
https://rxnorm.usefulapi.io/mcp
~/.codex/config.toml
[mcp_servers.rxnorm]
url = "https://rxnorm.usefulapi.io/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "rxnorm": {
      "url": "https://rxnorm.usefulapi.io/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "rxnorm": {
      "type": "http",
      "url": "https://rxnorm.usefulapi.io/mcp"
    }
  }
}

Available tools 13

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

rxnorm
rxnorm_find_rxcui_by_name
Find RxNorm concept IDs (RxCUIs) matching a drug name string. RxNav REST: GET /rxcui.
rxnorm_get_all_related
Get every concept directly or indirectly related to a concept (all term types). RxNav REST: GET /rxcui/{rxcui}/allrelated.
rxnorm_get_approximate_match
Fuzzy match a term against RxNorm names — tolerant of abbreviations, misspellings, and extra words. RxNav REST: GET /approximateTerm.
rxnorm_get_class_members
Get the drugs belonging to a drug class (RxClass API). RxNav REST: GET /rxclass/classMembers.
rxnorm_get_concept_properties
Get the RxNorm properties (name, synonym, tty, language, suppress, umlscui) of a concept. RxNav REST: GET /rxcui/{rxcui}/properties.
rxnorm_get_drug_classes
Get the drug classes that contain a drug, by drug name (RxClass API). RxNav REST: GET /rxclass/class/byDrugName.
rxnorm_get_drugs
Search drug products (all term types) matching a name, grouped by concept type. RxNav REST: GET /drugs.
rxnorm_get_history_status
Get the status, history and attributes of a concept (active, remapped, quantified, etc). RxNav REST: GET /rxcui/{rxcui}/historystatus.
rxnorm_get_ndcs
Get the NDCs (National Drug Codes) associated with a concept. RxNav REST: GET /rxcui/{rxcui}/ndcs.
rxnorm_get_property
Get a named property (category, name, value) of a concept, e.g. ATC code or a synonym. RxNav REST: GET /rxcui/{rxcui}/property.
rxnorm_get_related_by_type
Get concepts related to a concept, restricted to the specified term types. RxNav REST: GET /rxcui/{rxcui}/related.
rxnorm_get_spelling_suggestions
Get spelling suggestions for a possibly-misspelled drug name. RxNav REST: GET /spellingsuggestions.
rxnorm_get_term_types
List all RxNorm term types (metadata), e.g. SCD, SBD, IN, BN. RxNav REST: GET /termtypes.

Endpoints

URLTransportStateLatencyChecked
https://rxnorm.usefulapi.io/mcp streamable-http answering 68 ms 11 min ago

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RxNorm MCP by usefulapi — questions

Answers built from our own checks of this server.

What can RxNorm MCP by usefulapi do?
It exposes 13 tools, read directly from the server on our last check. Among them: rxnorm_find_rxcui_by_name, rxnorm_get_all_related, rxnorm_get_approximate_match, rxnorm_get_class_members, rxnorm_get_concept_properties, rxnorm_get_drug_classes and 7 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is RxNorm MCP by usefulapi working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 160 ms. The bar chart above shows every period we have measured.
How do I connect RxNorm MCP by usefulapi?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does RxNorm MCP by usefulapi need an API key?
No. RxNorm MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 13 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is RxNorm MCP by usefulapi?
It answers our handshake in 160 ms on average, which is faster than 80% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is RxNorm MCP by usefulapi open source?
The code is open source: it is published under the MIT licence, written in JavaScript, 1 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at rxnorm.usefulapi.io, which runs on its operator's own terms.