# Suverse World Bank Real Interest Rate

> Suverse World Bank Real Interest Rate is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.07/call, status unknown (last checked 2026-09-14).

Fetches the real interest rate time series for any country by ISO code from World Bank Open Data, returning country, year, and value without requiring an API key.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-wb-real-interest-rate
- Price: $0.07/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/suverse-world-bank-real-interest-rate-ac419fe7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_z5wp5FJSXevAJ1JmWUWMc

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 suverse-world-bank-real-interest-rate-ac419fe7 -d '<json body>'
```

Example prompt: Pull the full yearly real interest rate time series for Brazil (ISO code BR) from the World Bank — I need country, year, and rate values for a macro analysis.

## When to prefer this

Choose this endpoint when you need authoritative, long-run yearly real interest rate data sourced directly from the World Bank without managing your own API key. It is ideal for macroeconomic, cross-country, or demographic analyses where consistent World Bank methodology matters. Prefer it over scraping or general web search when you need structured, machine-readable time series data for a specific country by ISO code.

## Known failure modes

- Invalid or unrecognized ISO country code returns an error or empty dataset
- Country has no World Bank real interest rate data for requested years — returns empty series
- World Bank upstream data source unavailable — endpoint returns degraded or error response
- Malformed POST body or missing required fields returns a 400-level error
- Payment failure via x402 protocol blocks the request before data is returned

## How this service works

Real Interest Rate for any country by ISO code as a yearly World Bank Open Data time series, no key. Returns country, year, and value. For AI agents doing macro, demographic, and cross country analysis.

## Output

Returns a time series array for the specified country with each record containing the country identifier, year, and the real interest rate value as reported by the World Bank. Coverage spans multiple decades depending on data availability for the given ISO code.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/suverse-world-bank-real-interest-rate-ac419fe7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proxy.suverse.io](https://www.zero.xyz/host/proxy.suverse.io/llms.txt)