# Suverse FX Frankfurter ECB Reference Rates

> Suverse FX Frankfurter ECB Reference Rates is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.055/call, status unknown (last checked 2026-09-14).

Returns the latest European Central Bank official daily FX reference rates for a given base currency converted to one or more target currencies, sourced via Frankfurter/ECB.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-fx-frankfurter-pair
- Price: $0.055/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/suverse-fx-frankfurter-ecb-reference-rates-d5d17314
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3NPiqplnsp577__GilR_z

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-fx-frankfurter-ecb-reference-rates-d5d17314 -d '<json body>'
```

Example prompt: What's today's official ECB reference rate for EUR to USD and GBP? I need the Frankfurter/ECB daily rate so I can cite it in a report.

## When to prefer this

Choose this endpoint when you need official, citable European Central Bank daily FX reference rates — particularly for EUR-based or ECB-covered currency pairs. Prefer it over commercial FX APIs when compliance, auditability, or citing an authoritative official source matters. Not suitable for real-time tick data, intraday rates, or exotic currency pairs outside ECB coverage.

## Known failure modes

- Unsupported or invalid currency code returns an error or empty result
- ECB does not publish rates on weekends or public holidays — the most recent business day rate is returned instead
- Requesting a base/target pair not covered by ECB (e.g. exotic currencies) may return no data
- Network or upstream Frankfurter service unavailability yields a timeout or 5xx error
- Malformed request body (missing required fields) returns a validation error

## How this service works

Latest European Central Bank reference rates from a base currency to selected targets (comma-separated). Pass base and symbols as query params. Source: Frankfurter / ECB. Good for clean, citable, official daily FX.

## Output

Returns the latest ECB daily reference exchange rate(s) for the specified base currency against one or more target currencies, including the rate value(s), currency codes, and the effective date of the rates. Data is sourced from the Frankfurter API which mirrors official ECB publications.

## 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-fx-frankfurter-ecb-reference-rates-d5d17314/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)