# zaref.dev NCA Maximum Interest Rates History

> zaref.dev NCA Maximum Interest Rates History is a paid API for AI agents from zaref.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Returns the full dated history of South African NCA maximum lawful interest rates, with every verified update accumulated as time-series points.

## Facts

- Endpoint: GET https://zaref.dev/v1/nca-max-rates/history?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/zaref-dev-nca-maximum-interest-rates-history-c59efd26
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_abgWhDgEbe0gXep_gmg1e

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 zaref-dev-nca-maximum-interest-rates-history-c59efd26
```

Example prompt: Can you pull up the full history of South African NCA maximum interest rates — I need to see all the dated rate changes that have been recorded over time for each credit type?

## When to prefer this

Use this endpoint when you need the complete historical record of NCA maximum interest rate changes over time, rather than just the current rates. Prefer this over the snapshot endpoint when building compliance audit trails, time-series analysis, or tracking how South African credit rate caps have evolved.

## Known failure modes

- No data returned if the history dataset is empty or not yet populated
- HTTP 402 Payment Required if x402 payment header is missing or invalid
- HTTP 500 if the upstream data store is unavailable
- Stale data if the most recent update has not yet been verified and ingested

## How this service works

History of South African NCA maximum interest rates: dated points accumulating with every verified update.

## Output

An ordered time-series list of dated data points representing every verified historical update to South African NCA maximum lawful interest rates, broken down by credit type, allowing clients to trace rate changes over time.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "points": [
   {
    "date": "2026-06-04",
    "value": "..."
   }
  ],
  "series": "nca-max-rates"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/zaref-dev-nca-maximum-interest-rates-history-c59efd26/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from zaref.dev](https://www.zero.xyz/host/zaref.dev/llms.txt)