Epitaxy

Name: Epitaxy
Author: vor-bot

by vor-botversion 0.1.4i★ –iComputer or cloud

Registry namexyz.crossgrain/epitaxy

Install

Overview

Description from the maker (original English)

Federal drug shortages and recalls joined to the federal contracts that buy those drugs.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi0 of 1 passedChecked from public information; code not scanned yet
UsageiVery new↓ 27/wk · ★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Clinics & health
You need to fill in: EPITAXY_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 0 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: EPITAXY_API_URL, EPITAXY_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet
PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://drugs.crossgrain.xyz/v1/mcp

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "epitaxy": {
      "command": "uvx",
      "args": [
        "epitaxy-mcp"
      ],
      "env": {
        "EPITAXY_API_URL": "your-value",
        "EPITAXY_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http epitaxy https://drugs.crossgrain.xyz/v1/mcp

Or run it on your computer

claude mcp add epitaxy --env EPITAXY_API_URL=your-value --env EPITAXY_API_KEY=your-value -- uvx epitaxy-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "epitaxy": {
      "url": "https://drugs.crossgrain.xyz/v1/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "epitaxy": {
      "command": "uvx",
      "args": [
        "epitaxy-mcp"
      ],
      "env": {
        "EPITAXY_API_URL": "your-value",
        "EPITAXY_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "epitaxy": {
      "type": "http",
      "url": "https://drugs.crossgrain.xyz/v1/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "epitaxy": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "epitaxy-mcp"
      ],
      "env": {
        "EPITAXY_API_URL": "your-value",
        "EPITAXY_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://drugs.crossgrain.xyz/v1/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

EPITAXY_API_URL env
Base URL of the API. Defaults to https://drugs.crossgrain.xyz
EPITAXY_API_KEY secret env
Optional. Without it the free tier is used: 20 rows, no evidence, no weak matches, data delayed by 24 hours. No signup required.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

! Caution
Maker matches the repo
The publisher (crossgrain.xyz) is not the repo owner (vor-bot); someone else may have listed it
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Clinics & healthi

More stars than 0% of the other 1030 servers in this category
Published to the registry more recently than 36% of the other 1030 servers in this category
Basic checks equal to or better than 17% of the other 1030 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Epitaxy safe?

It passed 0 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: EPITAXY_API_KEY

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.4) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Mirobody, FHIR MCP Server, Google Health MCP

Alternatives

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Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

epitaxy

mcp-name: xyz.crossgrain/epitaxy

Federal drug shortages and recalls, joined to the federal contracts that buy those drugs. One call, no signup.

What it claims: this government supplier has an active FDA shortage or recall. What it does not claim: that a specific contract supplies a specific drug. Federal contract descriptions average 47 characters and almost never name the drug, so we say so instead of pretending otherwise.

Try it now, no key

curl https://drugs.crossgrain.xyz/v1/exposure?limit=5

One row of the answer, shortened:

{"exposure_id": "0026624dec7b6d9f",

"award_id": "SPE2DP25F109W", "company_id": "a4fdd4a7530f4962", "company_name": "TEVA PHARMACEUTICALS USA, INC.", "company_key": "teva pharmaceuticals usa", "shortage_id": "022c478fb3af28c4", "confidence": "probable", "match_method": "company_name_normalized"}

MCP

Remote, nothing to install:

{ "mcpServers": { "epitaxy": { "url": "https://drugs.crossgrain.xyz/v1/mcp" } } }

Local, stdio:

{ "mcpServers": { "epitaxy": { "command": "uvx", "args": ["epitaxy-mcp"] } } }

Tools: get_data_freshness, list_drug_shortages, list_drug_recalls, list_federal_drug_contracts, get_supplier_exposure.

Read the confidence field, always

value	meaning
`exact`	match on a shared identifier, here an NDC inside FDA data
`probable`	normalized company name, or a drug name token in the contract text
`weak`	anything softer, an indication only

Matching on both company and drug at once is not promoted to exact. Cross source joins are never exact, because FDA and USAspending share no identifier. Anyone claiming otherwise has a different source or is guessing.

Free tier

Works forever, no key, no signup. Returns at most 20 rows, without the evidence field, without weak matches, and with data delayed by 24 hours. Nothing is stored: no counters, no IP addresses. If a version that old does not exist yet, you get the oldest one available, so the free tier is never empty while data exists.

Addressing

These two addresses are the same segment and both work permanently:

https://drugs.crossgrain.xyz/v1/exposure

https://drugs.crossgrain.xyz/drugs/v1/exposure

Later segments arrive as /devices/v1/..., /food/v1/... and so on. A path whose segment is reserved but not live yet answers 404 with segment_not_live, it never returns another segment's data. An address that has been published is never withdrawn.

Paid

plan	price	contents
Starter	29 USD/mo	10 000 calls
Pro	99 USD/mo	100 000 calls plus daily delta feed
x402	0.004 USD/call	USDC on Base, no signup
Bulk dump	199 USD	one off, Stripe only

Sources and licence

openFDA, public domain, CC0 1.0 Universal
USAspending, public domain, code under CC0

Data is unvalidated and must not be used for medical decisions. This project is MIT licensed. Docs: https://drugs.crossgrain.xyz/docs

Epitaxy

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Clinics & healthi

Common questions

Alternatives

Mirobody

FHIR MCP Server

Google Health MCP

README from the maker

epitaxy

Try it now, no key

MCP

Read the confidence field, always

Free tier

Addressing

Paid

Sources and licence