# FHIR Slot List – HL7 R4 Appointment Time Slots

> FHIR Slot List – HL7 R4 Appointment Time Slots is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Retrieves a paginated FHIR Bundle of appointment Slot resources from a public HL7 FHIR R4 test server, returning a specified number of entries.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/fhir-slot-list
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fhir-slot-list-hl7-r4-appointment-time-slots-06be4c4b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Rmrc7oVx2ERKIYPMeKvue

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-slot-list-hl7-r4-appointment-time-slots-06be4c4b -d '<json body>'
```

Example prompt: Can you pull 10 appointment time slots from the FHIR R4 test server and show me the slot details?

## When to prefer this

Use this endpoint when you need to explore or test HL7 FHIR R4 Slot resources, prototype healthcare scheduling integrations, validate FHIR Bundle parsing logic, or demonstrate interoperability with standard FHIR appointment data structures using a public test server.

## Known failure modes

- Invalid or missing q parameter may return empty bundle or error
- Public test server downtime or rate limiting causing 503 responses
- q parameter set to very large number may result in slow response or truncated results
- Non-integer q value causing malformed request error

## How this service works

List appointment time slots (Slot resources) from the public HL7 FHIR R4 test server, returning {q} entries as a FHIR Bundle. Query: ?q= Returns JSON.

## Output

A JSON-formatted FHIR Bundle containing the requested number of Slot resources, each describing an appointment time slot with scheduling metadata conforming to HL7 FHIR R4 specification.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fhir-slot-list-hl7-r4-appointment-time-slots-06be4c4b/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)