# FHIR AllergyIntolerance List (HL7 R4 Test Server)

> FHIR AllergyIntolerance List (HL7 R4 Test Server) is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns a paginated list of FHIR R4 AllergyIntolerance resources from the public HL7 FHIR R4 test server, filtered by a query parameter.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/fhir-allergy-intolerance-list
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fhir-allergyintolerance-list-hl7-r4-test-server-45a9cf26
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ET4Eve_la5aJ5QW5VAzQn

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 fhir-allergyintolerance-list-hl7-r4-test-server-45a9cf26 -d '<json body>'
```

Example prompt: Can you pull me a page of AllergyIntolerance records from the public HL7 FHIR R4 test server — query for 'peanut' and return the results as JSON?

## When to prefer this

Choose this endpoint when you need to retrieve structured, standards-compliant FHIR R4 AllergyIntolerance data for testing, development, or demonstration purposes, especially when you need paginated results and JSON output conforming to the HL7 specification. Prefer this over raw FHIR server queries when you want a proxied, pay-per-call access pattern without managing FHIR server authentication directly.

## Known failure modes

- Empty result set if query matches no AllergyIntolerance records
- Upstream FHIR test server unavailable or slow, causing timeout
- Invalid or malformed query parameter returning an error response
- Payment failure if x402 USDC balance is insufficient

## How this service works

Return a page of {q} FHIR AllergyIntolerance resources from the public HL7 FHIR R4 test server. Query: ?q= Returns JSON.

## Output

A JSON-formatted FHIR Bundle containing a page of AllergyIntolerance resources matching the query, including allergy/intolerance details such as substance, patient reference, clinical status, verification status, and reaction information, conforming to the HL7 FHIR R4 specification.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fhir-allergyintolerance-list-hl7-r4-test-server-45a9cf26/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)