# FHIR R4 CapabilityStatement List

> FHIR R4 CapabilityStatement List is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).

Returns a paginated FHIR Bundle of CapabilityStatement resources from the public HL7 FHIR R4 test server.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/fhir-capability-statement-list
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fhir-r4-capabilitystatement-list-60f748ba
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UmOH0guCSidkwjiZGLTNG

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-r4-capabilitystatement-list-60f748ba -d '<json body>'
```

Example prompt: Can you fetch me the first 5 CapabilityStatement resources from the public HL7 FHIR R4 test server and return them as a FHIR Bundle?

## When to prefer this

Use this endpoint when you need to programmatically discover what capabilities an HL7 FHIR R4 test server supports — e.g., which resources, operations, and search parameters are available — and you want results returned as a standards-compliant FHIR Bundle. Prefer this over raw FHIR server queries when you need a simple, payable HTTP interface without managing FHIR server authentication.

## Known failure modes

- Missing or invalid q parameter may return empty bundle or error
- q value too large may result in timeout or truncated response
- FHIR test server unavailable causes upstream failure
- Non-numeric q value causes malformed request error
- Rate limiting or payment failure returns 402 error

## How this service works

List server capability statements (CapabilityStatement 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 CapabilityStatement resources from the HL7 FHIR R4 public test server, each describing server capabilities including supported resources, operations, search parameters, and interactions.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fhir-r4-capabilitystatement-list-60f748ba/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)