# zaref.dev SARS & Prescribed Interest Rates History

> zaref.dev SARS & Prescribed 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 2026-10-16).

Returns the full historical time series of South African SARS official and prescribed interest rates as dated data points accumulated over time.

## Facts

- Endpoint: GET https://zaref.dev/v1/sars-interest-rates/history?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/zaref-dev-sars-prescribed-interest-rates-history-96f022ac
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UDh90LhwLtv5DQeDPkc-N

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-sars-prescribed-interest-rates-history-96f022ac
```

Example prompt: Can you pull up the full history of South African SARS prescribed interest rates — all the dated points showing how the official rate and prescribed rate have changed over time?

## When to prefer this

Use this endpoint when you need the full historical series of South African SARS prescribed/official interest rates — for example, to backdate fringe benefit calculations, audit s7C loan rates, chart rate trends over time, or verify what rate applied on a specific past date. Prefer the current-snapshot sibling endpoint if you only need the latest rate.

## Known failure modes

- Payment not completed (x402 payment required before data is returned)
- Network timeout or service unavailability
- Malformed request returning 400 error
- Empty dataset if no historical records are available yet

## How this service works

History of South African SARS & prescribed interest rates: dated points accumulating with every verified update.

## Output

A time-ordered list of dated data points, each containing the SARS official rate of interest (used for fringe benefits and s7C loan calculations) and the prescribed interest rate, accumulated across every verified update since the series began.

## 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": "sars-interest-rates"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/zaref-dev-sars-prescribed-interest-rates-history-96f022ac/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)