# CF Exclusion Check

> CF Exclusion Check is a paid API for AI agents from cf-exclusion-check.cf-exclusion-check.workers.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Screens a person or business against the HHS-OIG LEIE and SAM.gov federal exclusion lists by name, NPI, UEI, or CAGE code.

## Facts

- Endpoint: GET https://cf-exclusion-check.cf-exclusion-check.workers.dev/v1/check
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cf-exclusion-check-8f9dad6d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9g7PbZLfKsrWD4-8CZujh

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability cf-exclusion-check-8f9dad6d
```

Example prompt: Can you check if Dr. Jane Smith with NPI 1234567890 is on the HHS-OIG LEIE or SAM.gov exclusion list?

## When to prefer this

Use this endpoint when you need to perform federal exclusion screening against both HHS-OIG LEIE and SAM.gov in a single call, especially when you have an NPI, UEI, or CAGE code to improve match accuracy. Prefer this over manual government website lookups when automating compliance workflows for healthcare credentialing, federal contracting, or vendor due diligence.

## Known failure modes

- Missing required query parameters (name, NPI, UEI, or CAGE) returns an error
- Ambiguous names may return false positives requiring manual review
- No match found does not guarantee the entity is not excluded if identifiers are misspelled
- API unavailability or timeout if upstream government databases are unreachable
- Payment failure (x402) if insufficient USDC balance

## How this service works

Screen a person or business against the HHS-OIG LEIE and SAM.gov exclusion lists. Match by name, NPI, UEI or CAGE.

## Output

Returns whether the queried person or business matches any records on the HHS-OIG LEIE or SAM.gov exclusion lists, along with details such as the excluding agency, exclusion dates, NPI, and UEI for each match found.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cf-exclusion-check-8f9dad6d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cf-exclusion-check.cf-exclusion-check.workers.dev](https://www.zero.xyz/host/cf-exclusion-check.cf-exclusion-check.workers.dev/llms.txt)