Services

The x402 service directory — but enriched with what a catalog can't show: verified on-chain payment volume, the provider's ERC-8004 identity and trust score, and live status. Ranked by real economic activity, not just listings.

ServiceProviderPriceVerified vol30d callsLive
Otto AITrading
x402.ottoai.services
Hyperliquid perpetuals market data: live mark/oracle price, funding rate, open interest, max leverage, and size specs for any tradable asset.
unverified$0.0011,106
NansenTrading
api.nansen.ai
Get Smart Money Perpetual Trades Data
unverified$0.05608
x402.ottoai.services
DeFi yield farming markets with live APYs across Aave V3 and Morpho on Base and Ethereum. Compare rates before depositing idle stablecoins.
unverified$0.001444
x402.clashofcoins.com
Agent wallet funding route
unverified$0.000001438
orbisapi.com
Score crowdfunding campaign update engagement effectiveness
unverified$0.005331
skills.onesource.io
Ethereum network info - chain ID, block height, and gas price in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice)
unverified$0.001305
skills.onesource.io
List every ERC721 NFT token_id a wallet owns in a collection via tokenOfOwnerByIndex (eth_call)
unverified$0.008252
api.printmoneylab.com
Korean exchange prices (Upbit, Bithumb) for a single token in KRW
unverified$0.001247
api.myceliasignal.com
USDC/USD peg — Ed25519 signed attestation
unverified$0.01189
data.crestsystems.ai
Crest · token_detail -- Fetch detailed data for a single token by CoinGecko ID. Returns current price, volume, market cap, 24h/7d/30d change percentages, ATH, ATL, circulating and total supply, and description.
unverified$0.002184
api.myceliasignal.com
EUR/USD — Ed25519 signed attestation
unverified$0.01181
data.crestsystems.ai
Crest · open_interest — Fetch open interest for any perpetual futures symbol. Returns current OI in contracts and USD from Binance Futures.
unverified$0.002142
orbisapi.com
Score crowdfunding campaign momentum from funding velocity
unverified$0.005103
data.crestsystems.ai
Crest · prices -- Fetch top 25 crypto token prices and return price, 24h change percentage, 7d change, market cap, and 24h volume for each token. Covers BTC, ETH, SOL, and 22 more by market cap.
unverified$0.002100
data.crestsystems.ai
Crest · defi_yields — Fetch top 20 DeFi yield opportunities. Returns APY, TVL, project name, and chain. Sorted by APY, filtered to pools above $1M TVL.
unverified$0.00293
api.stocktrends.com
Latest weekly price row for a Stock Trends symbol, including adjusted close, weekly high/low, volume (actual shares traded), trades, and price change.
unverified$0.002586
stablefinance.dev
Real-time single-ticker price quote.
unverified$0.0285
NansenTrading
api.nansen.ai
Get "Token God Mode" (TGM) DEX trades data
unverified$0.0185
data.crestsystems.ai
Crest · gas_oracle -- Fetch current gas prices across multiple EVM chains. Returns fast/standard/slow estimates in gwei for Base, Ethereum, Polygon, Arbitrum, and Optimism.
unverified$0.00284
proxy.suverse.io
Bidirectional ERC20 token swap aggregator on Base mainnet via LiFi routing across 20+ DEXs (Uniswap V3, Aerodrome, BaseSwap, SushiSwap). USDC to WETH AERO DEGEN BRETT TOSHI cbETH cbBTC or any ERC20, and reverse to USDC. Two-step quote/execute x402 flow. 1% fee. AI agent swap. L2 DEX.
unverified$0.00183
blockrun-web-vbsbhh7lea-uc.a.run.app
US Stock realtime price for AAPL
unverified$0.00181
data.crestsystems.ai
Crest · dex_pair — Fetch DEX pair data for any token pair on any chain. Returns price, liquidity, 24h volume, and price change via GeckoTerminal..
unverified$0.00280
tick.hugen.tokyo
Get real-time Best Bid/Ask for any FX pair, aggregated from multiple institutional liquidity providers. 62-88% tighter spreads than any single source. Includes quality metadata (fresh_sources, quality_state, spread_vs_single_source). Supports 14 FX pairs including EURUSD, USDJPY, GBPUSD, AUDUSD, AUDNZD, and XAUUSD. AI agent API for forex trading signals, portfolio valuation, price comparison, and arbitrage detection. Accepts USDC payments on Base and Solana
unverified$0.00578
blockrun-web-vbsbhh7lea-uc.a.run.app
US Stock realtime price for NVDA
unverified$0.00165
data.crestsystems.ai
Crest · nft_floor — Fetch NFT collection floor price by collection ID. Returns ETH and USD floor price, market cap, 24h volume, owner count, and total supply.
unverified$0.00265
blockrun-web-vbsbhh7lea-uc.a.run.app
US Stock realtime price for SPY
unverified$0.00163
www.x402scan.com
Paginated list of all indexed x402 resources
unverified$0.0161
Otto AITrading
x402.ottoai.services
Cross-venue funding-rate arbitrage + crowded-positioning radar: live perp funding rates, open interest, global & top-trader long/short ratios, whale positions, and liquidations across Binance, OKX, Bybit, Hyperliquid, and more. Omit symbol for the whole-market overview; pass one (e.g. BTC) for the per-exchange breakdown. (Hyperliquid-only perp data: use hyperliquid-market.)
unverified$0.00160
blockrun-web-vbsbhh7lea-uc.a.run.app
US Stock realtime price for TSLA
unverified$0.00159
api.seerium.xyz
Dex trading agent signal API and crypto market signal feed for agents. Returns the latest Dex trading agent read for supported crypto symbols, including action, confidence, risk, drivers, leverage context, and monitoring notes.
unverified$0.00159
Otto AITrading
x402.ottoai.services
Token price, market cap, volume, supply, and basic metrics. Works for any listed token.
unverified$0.00156
blockrun-web-vbsbhh7lea-uc.a.run.app
US Stock realtime price for CRCL
unverified$0.00156
api.seerium.xyz
Polymarket whale trades API and whale radar feed for agents. Returns the top 10 largest recent trades from tracked whale wallets.
unverified$0.00347
stablefinance.dev
Historical OHLCV bars for a US stock. Required: ticker, interval (day|week|month|year), start_date (YYYY-MM-DD), end_date (YYYY-MM-DD).
unverified$0.0245
api.anchor-x402.com
USD price for any major token by symbol or chain+contract — $0.001 USDC
unverified$0.00141
x402station.io
Preflight x402 scam check: endpoint risk before you pay — decoy / zombie / price-trap / never-paid? Trust verdict in ~200ms before PAYMENT-SIGNATURE.
unverified$0.00139
equity.lonestaroracle.xyz
Stock analysis — price fundamentals technical indicators for any ticker
unverified$0.0538
graphadvocate.com
Onchain data router for AI agents. Plain-English → working GraphQL or REST. 15.5K+ subgraphs on 8 chains. Uniswap, Aave, Compound, ENS, Polymarket, Limitless, Predict.fun, ERC-8004 discovery. Identified senders (include `sender` wallet in A2A metadata): 3 free /route /day, then $0.01 USDC via x402 on Base. Anonymous senders pay $0.01 from call 1. /polymarket + /hyperliquid trader-intel paid from call 1 ($0.01-$0.10).
unverified$0.0137
nonvisceral-eloisa-mousily.ngrok-free.dev
Liquidation cascade risk API: decision-ready risk level (NONE/LOW/MODERATE/ELEVATED/HIGH) per coin, plus recommended position-size-discount and entry-threshold-boost used internally by the Kerdos trading fleet. Direct complement to /api/liquidations — liquidations gives you raw data, cascade-risk gives you the classification and action recommendation. Monopoly: derived from OI velocity + large-trade clustering + liquidation cluster count on Hyperliquid.
unverified$0.0236
nonvisceral-eloisa-mousily.ngrok-free.dev
Cryptocurrency liquidation data API: real-time open interest velocity, cascade risk detection, large trade tracking ($50K+) for Bitcoin BTC, Ethereum ETH, and Solana SOL. Market risk and liquidation heatmap data from Hyperliquid DEX.
unverified$0.0236
nonvisceral-eloisa-mousily.ngrok-free.dev
Gold XAU trading signal API: real-time gold price with directional signal (bullish, bearish, neutral), RSI(14) indicator, and 4h fib retracement context. Commodity and precious-metals market data for trading agents and automated strategies. Derived from Hyperliquid HIP-3 gold perpetuals — one of the few API sources for on-chain gold perp signals with no-KYC agent access.
unverified$0.0336
nonvisceral-eloisa-mousily.ngrok-free.dev
Cryptocurrency perpetual futures funding rates and open interest API: real-time BTC Bitcoin and ETH Ethereum funding rate data from Hyperliquid DEX. Open interest volume for crypto market analysis and trading signals.
unverified$0.0136
api.myceliasignal.com
BTC/USD spot price — Ed25519 signed attestation
unverified$0.0136
nonvisceral-eloisa-mousily.ngrok-free.dev
Cumulative Volume Delta CVD API: real-time taker buy vs sell volume divergence for Bitcoin BTC and Ethereum ETH. Detects bullish accumulation (price down + CVD up) and bearish exhaustion (price up + CVD down). 1h and 4h divergence signals from Hyperliquid DEX trade flow.
unverified$0.0236
nonvisceral-eloisa-mousily.ngrok-free.dev
Crypto whale wallet tracking API: on-chain smart money capital flows, DeFi whale bridge activity, directional stance detection. Track large wallet movements across Ethereum, Base, and Arbitrum chains for trading signals.
unverified$0.0136
nonvisceral-eloisa-mousily.ngrok-free.dev
Funding chaos index API: counts sub-12h funding-rate sign flips for BTC/ETH/SOL on Hyperliquid. Returns chaos level (NONE/LOW/MODERATE/ELEVATED/HIGH), per-asset flips, cycle counts, implied bias (LONG_EXHAUSTION/SHORT_EXHAUSTION/MIXED/NEUTRAL). Mean-reversion + fade-fresh-flip contrarian signal. Decision-ready funding-regime product.
unverified$0.0336
token.lonestaroracle.xyz
ERC-20 token due diligence — risk score, GoPlus security scan, honeypot detection, liquidity, holder concentration, AI analyst verdict
unverified$0.1536
x402.coinstats.app
CoinStats DeFi positions for a wallet — staked, lent, borrowed, LP balances across protocols (Aave, Lido, Uniswap, Curve, etc.)
unverified$0.0435
api.agentcamo.xyz
Returns proxy credentials for a geo-targeted exit IP. Residential, mobile/5G, SOCKS5, WireGuard. 249 countries, mid-session geo-swap. No signup.
unverified$0.0134
nonvisceral-eloisa-mousily.ngrok-free.dev
Bitcoin Gold correlation API: 14-day rolling Pearson correlation between BTC and gold spot. Returns rho, regime (LIQUIDITY_STRONG, LIQUIDITY_MILD, DECOUPLED, HEDGE_MILD, HEDGE_STRONG), interpretation. Cross-asset macro signal for risk-on/risk-off rotation strategies and AI agents tracking BTC's behavior as digital gold versus risk asset.
unverified$0.0234
nonvisceral-eloisa-mousily.ngrok-free.dev
Real-time cryptocurrency market data API — one-call market snapshot bundle for trading agents. Returns Bitcoin BTC price, Ethereum ETH price, gold XAU price, RSI indicator, market trend direction, perpetual funding rates, open interest, Fear and Greed index, and composite sentiment signal. Live trading data from Hyperliquid DEX. Low-cost gateway endpoint ($0.01) — ideal first call for agents discovering the API surface or building a per-tick decision context.
unverified$0.0134
proxy.suverse.io
Polymarket smart-money bias signals. Where are skill-ranked traders positioning per market? YES/NO volume split, conviction score, category-aware. Politics + crypto + sports + macro. $0.05/call. Keywords: polymarket, prediction-markets, smart-money, bias, signal.
unverified$0.0533
api.hyperextend.xyz
Derived two-sided open interest for a HIP-4 outcome market, per minute.
unverified$0.1233
orbisapi.com
Score wallets across 6 signals - age, activity, DeFi rep, balance tier & AML flags.
unverified$0.0131
api.seerium.xyz
Crypto market signals API for Dex market data, order books, funding, momentum, and trading opportunities.
unverified$0.00131
proxy.suverse.io
Polymarket whale entries feed — large trades from skill-ranked traders. Stream with trader skill score, side, size, entry price, post-entry market context. NOT guaranteed alpha. $0.02/call. Keywords: polymarket, whale, entries, feed, copy-trading.
unverified$0.0231
api.myceliasignal.com
MSVI BTC/USD volatility index — Ed25519 signed attestation
unverified$0.0531
agentic.clawbots.org
Returns a ranked, deadline-aware list of open Base ecosystem funding programs (grants, accelerators, hackathons, retro-funding). Each result cites source_url, deadline, funding_range_usd, and last_verified_at. Stale entries are flagged. Designed for agents and builders shipping on Base who need a single call to surface the next applicable funding deadline.
unverified$0.0530
x402station.io
Forensic x402 scam/risk report for a suspicious endpoint: probe history, signatures, decoy / price-trap patterns.
unverified$0.00130
data.crestsystems.ai
Crest · defi_overview -- Fetch DeFi ecosystem data for a specific blockchain. Returns total TVL, top 10 protocols by TVL with 24h change and category classification.
unverified$0.00329
proxy.suverse.io
Polymarket trader skill rankings. Difficulty-adjusted skill scores per category (politics/crypto/sports/macro). Resolution-validated performance, hashed addresses, confidence-scored. $0.05/call. Keywords: polymarket, trader, skill, ranking, prediction-market.
unverified$0.0529
proxy.suverse.io
Polymarket position holders intelligence. Where do skill-ranked traders hold large open positions right now? Per-market YES/NO concentration, holder skill distribution, largest positions. Leading indicator for resolution. $0.07/call. Keywords: polymarket, position-holders, leading-indicator, intelligence.
unverified$0.0729
x402.ottoai.services
Hyperliquid perpetual trading account snapshot with open positions, margin, collateral, and active trigger orders (TP/SL/limit).
unverified$0.00128
x402.coinopai.com
The accountability step. Verify any Kronos decision_id against later market prices. Returns whether direction held, PnL%, and a verdict.
unverified$0.0728
api.seerium.xyz
Pump.fun and Pump Fun Solana meme coin radar API for agents. Returns fresh-launch tokens with early traction, liquidity, short-window volume, and meme scores.
unverified$0.00128
api.seerium.xyz
Polymarket sponsor rewards API for agents. Finds prediction market reward programs with CLOB liquidity, volume, spread, and current daily reward rates.
unverified$0.00127
api.seerium.xyz
Legacy Dex trading-agent signal API for agents. Prefer /v1/dex/agent-output. Returns the latest Seerium Dex trading-agent read for supported crypto symbols.
unverified$0.00127
api.myceliasignal.com
MSXI BTC/USD sentiment index — Ed25519 signed attestation
unverified$0.0526
api.myceliasignal.com
MSSI market stress index — Ed25519 signed attestation
unverified$0.0526
api.seerium.xyz
Ranked opportunities API and market signals API for agents. Ranks Polymarket prediction market opportunities and Dex signals by budget, liquidity, spread, horizon, and risk.
unverified$0.00426
api.seerium.xyz
Pump.fun and Pump Fun Solana meme coin quality-volume API for agents. Ranks high-velocity tokens with liquidity, short-window volume, and meme scores.
unverified$0.00126
ArbiPulseTrading
arbipulse.vercel.app
ArbiPulse commodity regional arbitrage — cross-regional price differentials for oil, gas, metals, grains with transport cost breakdown
unverified$0.1025
api.seerium.xyz
Macro market signals API for agents. Tracks inflation, rates, liquidity, economic releases, crypto, and prediction markets.
unverified$0.00125
earnings.lonestaroracle.xyz
unverified$0.0325
x402.ottoai.services
Top 3 hottest altcoins traders may want to ape into, based on news and Twitter analysis. DYOR.
unverified$0.00124
api.craigmbrown.com
BlindOracle agent reputation (ERC-8004 + ProofDB)
unverified$0.0124
api.seerium.xyz
Polymarket API and prediction market pro screener for agents. Ranks setups by score, confidence, liquidity, spread, volume, momentum, and mispricing.
unverified$0.00524
IXSTrading
api-dev-v2.ixs.finance
IXS Real world asset vaults — 6% yields, BlackRock exposure, tokenized on-chain
unverified$0.00124
x402.ottoai.services
Premium token intelligence: price metrics, news, Twitter sentiment, and futures data. Find out why your token is moving.
unverified$0.00123
api.seerium.xyz
Pump.fun and Pump Fun Solana meme coin smart-flow API for agents. Surfaces clean momentum, tracked wallet flow, liquidity, volume, and meme scores.
unverified$0.00123
api.seerium.xyz
Polymarket API and prediction market API for agents. Returns prediction market signals, market snapshots, order books, and ranked opportunities.
unverified$0.00122
api.seerium.xyz
Polymarket whale trades API and whale radar sample for agents. Returns current tracked wallet moves for discovery and monitoring.
unverified$0.00322
simple-x-api.com
Proxy the corresponding X API v2 endpoint. x402 authorizes up to $10.00; successful responses settle at X's public non-owned per-resource/per-action price.
unverified$10.0022
OracleTrading
api.anchor-x402.com
Yes/no oracle with dual-chain anchored verdict (Base + Solana). $0.05 USDC.
unverified$0.0521
api.defibase.us
DeFi protocol detail enriched with onchain activity (Base). v0.2-stub: returns DefiLlama TVL plus a placeholder onchain block; real CDP base.events integration lands in v0.1.x.
unverified$0.0121

GET api.ioi.md/v0/endpoints · verified volume + provider trust are ioi-only signals