Leie MCP Server

leie

Is this healthcare provider barred from federal health programs? Screening against the HHS OIG List of Excluded Individuals/Entities — the check you make before paying, employing or contracting with a provider.

Part of Pipeworx — an MCP gateway connecting AI agents to 1865+ live data sources. This is an independent, unofficial integration — not affiliated with, endorsed by, or published by the upstream provider.

Tools

Auth

None. No key, no account.

Data source

HHS Office of Inspector General — List of Excluded Individuals/Entities (LEIE), which OIG publishes as a CSV for loading into your own system:

• https://oig.hhs.gov/exclusions/exclusions-list/
• https://oig.hhs.gov/exclusions/downloadables/UPDATED.csv

US federal public domain. 83,782 exclusions as loaded — 80,355 individuals and 3,427 businesses.

This names real people — read this before using it

A false positive here accuses somebody of healthcare fraud. The data makes that easy to do by accident:

• 690 excluded people share the surname SMITH. 591 share JOHNSON.
• Four different excluded men are called some form of John Smith — born 1949 (California, internal medicine), 1951 (Colorado, counselor), 1960 (New York, plastic surgery) and 1970 (Pennsylvania, general practice).

So check_provider_exclusion never returns a boolean. It returns candidates with date_of_birth, state, city, specialty and npi, and a match_confidence describing what was actually matched:

Pass npi whenever you have it — it is the difference between a lead and an identification. Only 8,835 of 83,782 exclusions carry one, though, so for most records date of birth is the practical discriminator.

Currently excluded, not historically

Everyone on this list is currently excluded. The file has a reinstatement column and it is empty on every row, because OIG removes a reinstated party rather than flagging them. The ingest therefore deletes rows absent from each new file — "no longer listed" is how a reinstatement reaches you, and there is no expired state to read.

What this does not cover

State Medicaid exclusion lists, SAM.gov debarment, and licensure actions that have not led to an OIG exclusion. A clear result here is not a complete background check, and check_provider_exclusion says so on every no-match response.

Refreshing

Monthly, when OIG republishes:

node scripts/ingest-leie.mjs

Re-runnable: rows upsert on a content hash, and anything absent from the new file is deleted so reinstatements take effect. It refuses to load a file with fewer than 50,000 rows rather than quietly emptying the table.

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "leie": {
      "url": "https://gateway.pipeworx.io/leie/mcp"
    }
  }
}

What this endpoint actually serves

tools/list at https://gateway.pipeworx.io/leie/mcp returns the tools in the table above plus the shared Pipeworx meta-tools — ask_pipeworx, discover_tools, search_within, remember/recall and the rest of the gateway-wide set. So the tool count you see is larger than this table: a single-pack endpoint currently lists roughly 30 shared tools alongside the pack's own. The connection's initialize response states its exact scope, and is the authoritative answer for a given day.

This is deliberate, not multiplexing by accident. The meta-tools are what let a scoped connection answer a question this pack does not cover — via ask_pipeworx, which routes across the whole catalog — without you adding a second MCP server. There is currently no way to mount a pack endpoint without them; if the extra schemas cost you more context than the routing is worth, connect to the full gateway once rather than to several pack endpoints.

Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Both URLs reach the same gateway and the same 1865+ data sources. The only difference is which pack's tools are listed directly; ask_pipeworx reaches all of them from either one.

No MCP client? Call it over HTTP

curl -X POST https://gateway.pipeworx.io/v1/tools/check_provider_exclusion \
  -H 'Content-Type: application/json' \
  -d '{"name":"John Smith"}'

No account needed for the first calls. Inspect any tool: GET https://gateway.pipeworx.io/v1/tools/check_provider_exclusion. Find one: POST https://gateway.pipeworx.io/v1/tools/search_packs with {"query":"..."}.

Run it from npm

@pipeworx/mcp-leie is a local stdio bridge to the Pipeworx gateway: your MCP client starts it with npx, and it forwards every call to the same https://gateway.pipeworx.io/leie/mcp endpoint shown above. It needs network access; there is no offline mode.

{
  "mcpServers": {
    "leie": {
      "command": "npx",
      "args": ["-y", "@pipeworx/mcp-leie"]
    }
  }
}

Without a key it calls anonymously, capped at 50 calls a day. A free account raises that to 200 a day: get a key at https://pipeworx.io/signup and add "env": { "PIPEWORX_API_KEY": "<your key>" } to the server entry. The key is sent as a Bearer token, the same way a hosted connection sends it, so calls are metered and billed exactly as they are there.

It lists only this pack's tools by default. Set PIPEWORX_META_TOOLS=1 to also list ask_pipeworx and the other gateway-wide tools.

Behind an HTTPS proxy: Node's built-in fetch does not read HTTPS_PROXY by default. Newer Node releases honour it when NODE_USE_ENV_PROXY=1 is set; check your Node version's documentation.

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:

ask_pipeworx({ question: "your question about Leie data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides
• pipeworx.io

License

MIT