# TokenGuard BTC Exchange Rates

> TokenGuard BTC Exchange Rates is a paid API for AI agents from eltociear-tokenguard.hf.space, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns the current Bitcoin (BTC) exchange rate against multiple fiat and crypto currencies

## Facts

- Endpoint: POST https://eltociear-tokenguard.hf.space/btc_rates
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tokenguard-btc-exchange-rates-cb0bcdc2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zCy2sxSaYjeDl6iVRYa4o

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 tokenguard-btc-exchange-rates-cb0bcdc2 -d '<json body>'
```

Example prompt: What is the current Bitcoin exchange rate against USD and ETH? I need live BTC conversion values across both fiat and crypto currencies right now.

## When to prefer this

Use this endpoint when you need live Bitcoin exchange rate data across a broad set of fiat and crypto currencies in a single call. It returns 76+ currency pairs including both fiat (USD, EUR, etc.) and crypto (ETH, etc.) in one response, making it ideal for agents needing multi-currency BTC conversion without calling separate endpoints.

## Known failure modes

- Payment not provided or insufficient USDC — x402 payment required error
- Network or upstream data source unavailable — 503 or timeout
- Invalid request format — 400 bad request
- Rate data temporarily stale or unavailable for specific currency pairs

## How this service works

BTC-denominated exchange rates for 76 fiat currencies and crypto — real-time cross-rates via CoinGecko, no API key required.

## Output

A JSON object with base currency set to BTC, a count of supported rate pairs (e.g. 76), and a map of currency codes to their type (crypto or fiat), unit name, and current exchange rate value relative to 1 BTC.

## 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": {
     "required": [],
     "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"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "base": "BTC",
  "count": 76,
  "rates": {
   "eth": {
    "type": "crypto",
    "unit": "Ether",
    "value": 37.9
   },
   "usd": {
    "type": "fiat",
    "unit": "US Dollar",
    "value": 60000
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tokenguard-btc-exchange-rates-cb0bcdc2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from eltociear-tokenguard.hf.space](https://www.zero.xyz/host/eltociear-tokenguard.hf.space/llms.txt)