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xyz.crossgrain/epitaxy

Official registry Health

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

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http epitaxy 'https://drugs.crossgrain.xyz/v1/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "epitaxy": {
            "type": "http",
            "url": "https://drugs.crossgrain.xyz/v1/mcp"
        }
    }
}
PYPI package epitaxy-mcp
Claude Code 
claude mcp add epitaxy -e 'EPITAXY_API_URL=https://drugs.crossgrain.xyz' -e 'EPITAXY_API_KEY=<your epitaxy_api_key>' -- uvx epitaxy-mcp==0.1.4
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "epitaxy": {
            "command": "uvx",
            "args": [
                "epitaxy-mcp==0.1.4"
            ],
            "env": {
                "EPITAXY_API_URL": "https://drugs.crossgrain.xyz",
                "EPITAXY_API_KEY": "<your epitaxy_api_key>"
            }
        }
    }
}

Environment variables

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

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. epitaxy
  2. Try it now, no key
  3. MCP
  4. Read the confidence field, always
  5. Free tier
  6. Addressing
  7. Paid
  8. Sources and licence

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

valuemeaning
exactmatch on a shared identifier, here an NDC inside FDA data
probablenormalized company name, or a drug name token in the contract text
weakanything 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

planpricecontents
Starter29 USD/mo10 000 calls
Pro99 USD/mo100 000 calls plus daily delta feed
x4020.004 USD/callUSDC on Base, no signup
Bulk dump199 USDone 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

Frequently asked questions

What is xyz.crossgrain/epitaxy?

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

How do I install xyz.crossgrain/epitaxy?

It runs as a remote server. In Claude Code: claude mcp add --transport http epitaxy 'https://drugs.crossgrain.xyz/v1/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does xyz.crossgrain/epitaxy need an API key?

Yes. It expects EPITAXY_API_KEY, which you set in its configuration.

Is xyz.crossgrain/epitaxy open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains xyz.crossgrain/epitaxy?

It is published by vor-bot. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.