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Stablecoin Peg Monitor (Base Chain)
x402
Stablecoin Peg Monitor (Base Chain) is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Monitors stablecoin prices vs their peg, 24-hour supply flows, and depeg alerts for USDC, USDT, DAI, EURC, and USDbC on Base using CoinGecko and DeFiLlama data.
Price / call$0.01
Success—
StatusUnknown
How this service works
Monitor stablecoin prices vs peg, 24h supply flows, and depeg alerts on Base. Covers USDC, USDT, DAI, EURC, USDbC. Uses CoinGecko + DeFiLlama.
Output
Returns current price vs peg for each covered stablecoin (USDC, USDT, DAI, EURC, USDbC) on Base, 24-hour supply flow changes, and any active depeg alerts including deviation percentages, sourced from CoinGecko and DeFiLlama.
Example use cases
Example prompt
“Check if any stablecoins are losing their peg on Base right now — I want to see the current prices vs peg, 24-hour supply flows, and any depeg alerts for USDC, USDT, DAI, EURC, and USDbC.”
Technical details
Endpoint
POSThttps://httpay.xyz/api/stablecoin-monitorWhen to prefer
Use this endpoint when you need real-time stablecoin peg monitoring specifically on the Base chain, with combined price and supply-flow data from both CoinGecko and DeFiLlama. Prefer this over general crypto price APIs when you specifically need depeg alerts and 24h supply flow context for Base-native stablecoins.
Side effects
- CoinGecko or DeFiLlama API unavailable — stale or missing price/supply data
- Stablecoin not supported on Base — missing data for that asset
- Payment not processed — 402 response requiring 0.01 USDC via x402 protocol
- Network congestion on Base causing delayed on-chain data
Input
{
"chain": "base",
"stablecoins": [
"USDC",
"USDT",
"DAI"
],
"time_window_hours": 24
}Output
{
"tip": "Use ?depegThreshold=0.001 for stricter 0.1% monitoring",
"meta": {
"x402": true,
"poweredBy": "Alfred Zhang 🫡"
},
"chain": "Base",
"sources": [
"CoinGecko",
"DeFiLlama Stablecoin API"
],
"summary": {
"onPeg": 5,
"depegged": 0,
"depegAlerts": [],
"overallHealth": "✅ All stablecoins on-peg",
"totalMonitored": 5
},
"eurUsdRate": 1.1586,
"monitoredAt": "2026-06-12T03:52:49.258Z",
"stablecoins": [
{
"peg": "1 USD",
"supply": {
"chains": [
"Manta",
"ThunderCore",
"Horizen",
"BSquared",
"Superposition",
"Movement",
"Corn",
"BOB",
"Starknet",
"Tron",
"XRPL",
"CORE",
"WEMIX3.0",
"Botanix",
"ApeChain",
"Peaq",
"Evmos",
"Monad",
"Milkomeda C1 (Deprecated)",
"SX Network",
"Aptos",
"PulseChain",
"Edu_chain",
"Immutable zkEVM",
"Hedera",
"Algorand",
"Loopring",
"Polygon",
"MANTRA",
"DefiChain",
"Camp Network",
"Unichain",
"Zkfair",
"Karura",
"Moca",
"Wanchain",
"Metis",
"Kava",
"Ink",
"Kaia",
"Reinetwork",
"Morph",
"Osmosis",
"IoTeX",
"Ethereum",
"XDC",
"Linea",
"Cardano",
"EthereumClassic",
"Lisk",
"Waves",
"Soneium",
"Vana",
"Cronos",
"Somnia",
"Rari",
"Mode",
"Kardia",
"KCC",
"Berachain",
"EDU Chain",
"Crab",
"Base",
"Noble",
"GateLayer",
"Theta",
"Ronin",
"Shape",
"MultiversX",
"Katana",
"OP Mainnet",
"IOTA EVM",
"Glue",
"Kadena",
"edgeX L1",
"DFK",
"Harmony",
"World Chain",
"BSC",
"Codex",
"Flow",
"Dogechain",
"Astar",
"Oasis Emerald",
"Story",
"Citrea",
"Avalanche",
"Telos",
"Arbitrum",
"Stacks",
"Redbelly",
"Viction",
"GOAT",
"ZKsync Lite",
"Zircuit",
"Sui",
"Arbitrum Nova",
"Rootstock",
"Degen",
"Xc",
"Abstract",
"Ap3x",
"Moonbeam",
"ZKsync Era",
"Aurora",
"Gravity by Galxe",
"Sei",
"Injective",
"Stellar",
"LightLink",
"Bitlayer",
"Canto",
"Scroll",
"Moonriver",
"Mixin",
"Fogo",
"Meter",
"Stable",
"X Layer",
"Etherlink",
"Gnosis",
"Orderly Network",
"Gensyn",
"Nibiru",
"Celo",
"Taiko",
"Fuse",
"Doma",
"Fantom",
"Hyperliquid L1",
"Polygon zkEVM",
"OKTChain",
"Hemi",
"Mantle",
"Near",
"Terra Classic",
"Flare",
"Plume Mainnet",
"Elastos",
"Boba",
"Nero",
"Sonic",
"Syscoin",
"Solana",
"ICP",
"0G",
"Perennial",
"Xai",
"Tempo",
"Everscale",
"Polkadot"
],
"onBase": "$4,250,760,110",
"flow24h": "+$26,925,954 (+0.64%)",
"pegMechanism": "fiat-backed",
"flowDirection": "📈 Inflow",
"totalCirculating": "$74,917,917,332"
},
"symbol": "USDC",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"depegPct": "-0.0264%",
"change24h": "-0.0059%",
"marketCap": "$74,891,415,048",
"pegStatus": "✅ On-peg",
"volume24h": "$13,240,178,883",
"priceVsPeg": "0.999736 USD",
"currentPriceUsd": "$0.999736"
},
{
"peg": "1 USD",
"supply": {
"chains": [
"Manta",
"ThunderCore",
"Movement",
"Shiden",
"Corn",
"Starknet",
"Tron",
"CORE",
"ApeChain",
"Zilliqa",
"Peaq",
"Evmos",
"SX Network",
"Monad",
"Milkomeda C1 (Deprecated)",
"Aptos",
"Tezos",
"PulseChain",
"Kusama",
"Immutable zkEVM",
"Algorand",
"Loopring",
"Polygon",
"MANTRA",
"DefiChain",
"Unichain",
"Wanchain",
"Metis",
"Kava",
"Ontology",
"Ink",
"Kaia",
"Reinetwork",
"Morph",
"Osmosis",
"IoTeX",
"Ethereum",
"Linea",
"XDC",
"Cardano",
"Waves",
"EthereumClassic",
"Soneium",
"Vana",
"Rari",
"Somnia",
"Mode",
"Kardia",
"KCC",
"Vaulta",
"EDU Chain",
"Berachain",
"Crab",
"Bittorrent",
"Theta",
"MultiversX",
"Katana",
"OP Mainnet",
"IOTA EVM",
"Statemine",
"Glue",
"Harmony",
"BSC",
"Dogechain",
"Flow",
"Astar",
"Oasis Emerald",
"Heco",
"Story",
"Citrea",
"Avalanche",
"Telos",
"Arbitrum",
"Stacks",
"Redbelly",
"Viction",
"GOAT",
"ZKsync Lite",
"Sui",
"Zircuit",
"Arbitrum Nova",
"Plasma",
"Rootstock",
"Abstract",
"Moonbeam",
"TON",
"ZKsync Era",
"Aurora",
"Sei",
"Gravity by Galxe",
"Injective",
"LightLink",
"Canto",
"Scroll",
"Moonriver",
"Mixin",
"Meter",
"Stable",
"X Layer",
"Etherlink",
"Gnosis",
"Nibiru",
"Omni",
"Conflux",
"Celo",
"Taiko",
"Fuse",
"MegaETH",
"Fantom",
"Hyperliquid L1",
"OKTChain",
"Hemi",
"Mantle",
"Terra Classic",
"Near",
"Flare",
"Plume Mainnet",
"Boba",
"NEO",
"Syscoin",
"ICP",
"Solana",
"0G",
"Swellchain",
"Tempo",
"Polkadot",
"Everscale"
],
"onBase": "N/A",
"flow24h": "N/A",
"pegMechanism": "fiat-backed",
"flowDirection": "↔️ Stable",
"totalCirculating": "$186,648,811,350"
},
"symbol": "USDT",
"address": "0xfde4C96c8593536E31F229EA8f37b2ADa2699bb2",
"depegPct": "-0.1403%",
"change24h": "-0.0182%",
"marketCap": "$186,650,525,975",
"pegStatus": "✅ On-peg",
"volume24h": "$50,103,596,403",
"priceVsPeg": "0.998597 USD",
"currentPriceUsd": "$0.998597"
},
{
"peg": "1 USD",
"supply": {
"chains": [
"OP Mainnet",
"Glue",
"Harmony",
"ThunderCore",
"BSC",
"Astar",
"Oasis Emerald",
"Shiden",
"Avalanche",
"Starknet",
"Arbitrum",
"Aztec",
"ZKsync Lite",
"Evmos",
"Arbitrum Nova",
"SX Network",
"Milkomeda C1 (Deprecated)",
"Rootstock",
"PulseChain",
"Moonbeam",
"ZKsync Era",
"Aurora",
"Loopring",
"Polygon",
"Unichain",
"Metis",
"Scroll",
"Kava",
"Moonriver",
"Mixin",
"Kaia",
"Velas",
"Morph",
"Osmosis",
"Ethereum",
"Gnosis",
"Cardano",
"Linea",
"Taiko",
"Fantom",
"Hemi",
"KCC",
"Terra Classic",
"Near",
"EDU Chain",
"Boba",
"Syscoin",
"Solana",
"Everscale"
],
"onBase": "N/A",
"flow24h": "N/A",
"pegMechanism": "crypto-backed",
"flowDirection": "↔️ Stable",
"totalCirculating": "$4,424,844,511"
},
"symbol": "DAI",
"address": "0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb",
"depegPct": "-0.0075%",
"change24h": "+0.0125%",
"marketCap": "$4,212,983,404",
"pegStatus": "✅ On-peg",
"volume24h": "$211,837,853",
"priceVsPeg": "0.999925 USD",
"currentPriceUsd": "$0.999925"
},
{
"peg": "1 EUR",
"supply": {
"chains": [
"Base",
"Ethereum",
"Cardano",
"Stellar",
"Sonic",
"Avalanche",
"Polygon",
"ICP",
"Solana",
"Tempo"
],
"onBase": "N/A",
"flow24h": "N/A",
"pegMechanism": "fiat-backed",
"flowDirection": "↔️ Stable",
"totalCirculating": "N/A"
},
"symbol": "EURC",
"address": "0x60a3e35cc302bfa44cb288bc5a4f316fdb1adb42",
"depegPct": "+0.1184%",
"change24h": "+0.1916%",
"marketCap": "$440,561,987",
"pegStatus": "✅ On-peg",
"volume24h": "$43,863,009",
"priceVsPeg": "1.001184 EUR",
"currentPriceUsd": "$1.160000"
},
{
"peg": "1 USD",
"supply": {
"chains": [],
"onBase": "N/A",
"flow24h": "N/A",
"pegMechanism": "unknown",
"flowDirection": "↔️ Stable",
"totalCirculating": "N/A"
},
"symbol": "USDbC",
"address": "0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA",
"depegPct": null,
"change24h": null,
"marketCap": null,
"pegStatus": "❓ No price data",
"volume24h": null,
"priceVsPeg": "N/A",
"currentPriceUsd": "N/A"
}
],
"depegThreshold": "0.50%"
}Schema · Response
{
"type": "json",
"example": {
"description": "Monitor stablecoin prices vs peg, 24h supply flows, and depeg alerts on Base. Covers USDC, USDT, DAI, EURC, USDbC. Uses CoinGecko + DeFiLlama."
}
}Tags
x402
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