Stablecoin Stats & Peg Monitor
Stablecoin monitoring for the agent economy — where every payment IS a stablecoin. Returns the tracked stablecoin universe (circulating supply ≥ $1M) ranked by market cap, each with: name, symbol, peg type and mechanism (fiat-backed, crypto-backed, algorithmic — the risk hierarchy), circulating USD, current price and the computed peg_deviation_percent ((price−1)×100 for USD pegs; positive above peg, negative below). Two modes: look up specific coins by symbol (USDC, USDT, DAI), or DEPEG SCREENING — set max_peg_deviation_percent and get only coins whose absolute deviation is at least that value, the early-warning check an agent should run before accepting or holding a settlement currency. Data from DefiLlama's open stablecoins API, cached server-side and refreshed every 10 minutes. Pairs with token-price (any token) and fx (fiat rates).
Call with x402
1. Send the request. 2. Receive 402 with accepts[]. 3. Sign the payment and retry with the X-PAYMENT header.
curl -X POST https://agentbit.app/v1/defi/stablecoins \
-H 'Content-Type: application/json' \
-d '{"symbol":"USDC"}'
Input schema
{
"type": "object",
"properties": {
"symbol": {
"type": "string",
"description": "Filter by symbol substring, e.g. USDC"
},
"max_peg_deviation_percent": {
"type": "number",
"description": "Depeg screen: only coins with ABSOLUTE deviation >= this value (e.g. 0.5)"
},
"limit": {
"type": "integer",
"description": "Max results (1-50, default 15)"
}
}
}Output schema
{
"type": "object",
"properties": {
"result_count": {
"type": "integer"
},
"stablecoins": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"symbol": {
"type": "string"
},
"peg_type": {
"type": "string"
},
"peg_mechanism": {
"type": [
"string",
"null"
]
},
"circulating_usd": {
"type": "number"
},
"price": {
"type": [
"number",
"null"
]
},
"peg_deviation_percent": {
"type": [
"number",
"null"
]
},
"chains": {
"type": "array",
"items": {
"type": "string"
}
}
}
}
},
"universe_size": {
"type": "integer"
},
"note": {
"type": "string"
}
}
}Code examples
// JavaScript (x402-fetch)
import { wrapFetchWithPayment } from "x402-fetch";
const fetchWithPay = wrapFetchWithPayment(fetch, wallet);
const r = await fetchWithPay("https://agentbit.app/v1/defi/stablecoins", {
method: "POST",
headers: {"Content-Type": "application/json"},
body: JSON.stringify({"symbol":"USDC"})
});
console.log(await r.json());
# Python (x402 client)
from x402.clients.requests import x402_requests
s = x402_requests(account)
r = s.post("https://agentbit.app/v1/defi/stablecoins",
json={"symbol":"USDC"})
print(r.json())
// PHP
$r = Http::withHeaders(['X-PAYMENT' => $signedPayment])
->post('https://agentbit.app/v1/defi/stablecoins',
array (
'symbol' => 'USDC',
));
$data = $r->json();