x402 Finance API

Pay-per-call Lightning Network and Bitcoin data API. Invoice decoding, fee estimates, routing queries, real-time node stats. Dual payment: L402 (Lightning sats) or x402 (USDC on Base). From a real mainnet Lightning node — not a proxy, not a wrapper. The node that serves the data is the same one that processes the payment. 10 sats / $0.001 per call for basic endpoints, 50 sats / $0.005 for routing queries. Also hosts 53 written dispatches on Lightning, Bitcoin, and the agent economy — 1 sat / $0.001 per read.

XRPL-native machine intelligence and pre-settlement infrastructure. Autonomous agents can purchase wallet and transaction risk assessments, XRP/RLUSD route analysis, XRPL asset intelligence, arbitrage viability, ledger health, and transaction repair through x402 v2 with on-ledger XRP settlement.

Agent-ready 4H crypto market intelligence for BTC, ETH, XRP and ONDO. Each paid x402 response delivers a complete decision package with direction, live entry policy, liquidity-based stop loss and take profit, confidence, technical indicators and independently verifiable performance evidence. TZ SELECT provides one selected setup from the four supported markets.

Paid API returning US housing and mortgage indicators: 30-year and 15-year fixed rates, ARM rates, housing starts, building permits, existing home sales and the Case-Shiller home price index, sourced from FRED and refreshed weekly. Single GET /report endpoint, 0.03 USDC per call on Base or Solana.

Read-only personal finance reference-data and calculation API for AI agents: tax estimates, disposable-income comparisons, sub-central tax rates, and social-security contribution data.

Scores recent news headlines for a given ticker, company or market topic, returning a bullish/bearish/neutral distribution and an aggregate sentiment score from -1 to +1. One endpoint, 0.05 USDC per query.

One crypto allocation per day, fixed after the daily close. Since 12 September 2026 each day is fingerprinted on Sui before execution; earlier days were fingerprinted together on 11 September. Past days per call; today's allocation from 07:00 Zurich per call or with a pass. Each day from 2 October 2026 can be checked against Sui without trusting the seller.

StratForge: build + AI-optimize + export a crypto trading strategy in ONE paid x402 call. Tiers by optimizer depth - Flash 2min $2.99, Deep 15min $8.99, Ultra 60min $24.99. Perp futures (OKX Top-20) and Polymarket Up&Down. Paper now, live soon on app.apevsbot.com.

Options market data API returning unusual options activity, put/call ratio and the largest block trades for a given ticker, paid per call via x402.

DeFi protocol risk score: TVL, hack history, audit status, contract safety, AI verdict, plus current supply/lending yields (APY)

Prediction market API for agents covering Kalshi and Polymarket events: browse events, markets, order books and trades, and create orders and manage positions, paid per call in USDC on Solana or Base.

Real-time Hyperliquid BTC/ETH liquidation risk index built from live on-chain position data: notional at risk if price moves +/-1%/3%/5%, the closest position to liquidation, and current funding rate. Also serves backstop liquidation events, gas price, and other example x402 endpoints.

BRS Signals is the science behind the ORE Signals daily plate - Bitcoin's market structure read live by three independent sensors (on-chain, off-chain, absence) every 30 seconds, with an auditable rejection funnel. Free tier, no card; $0.01/query via x402 (USDC, Solana or Base).

Tollbooth — 59 verified tax, finance, lending, real-estate, retirement, investing, crypto and business calculators for AI agents, paid per call in USDC on Base mainnet (no account, no API key; $0.01–$1.00 per call via the Coinbase CDP facilitator). Every answer ships a formula/method trace, cited sources with a 2026 data-vintage stamp, and a reproducible SHA-256 hash over the RFC 8785 (JCS) canonical fixed point {endpoint, inputs, result, method, dataVintage} that any client re-derives for free with POST /v1/verify-hash — recompute the math instead of trusting the server. Free golden-vector self-checks at /v1/golden/:id publish expected inputs, results, and hashes. Optional paid tier: Ed25519-signed audit-grade Verification Receipt (POST /v1/receipt/:id — $1 per call, $5 per report; a normal paid answer does not include it). Tollbooth authors Golden-Vector Provenance (GVP), a single-author draft provenance spec (Apache-2.0 code / CC-BY-4.0 spec): the npm package golden-vector-provenance is published (v0.7.0, matching git tag v0.7.0), and a spec PR carrying the field is under public review at x402-foundation/x402#3304 (discussion #3234). Payment-rail-agnostic by construction: the fixed point binds the question and the answer, not the settlement rail. Also a free neutral verifier for any service's response (POST /v1/gvp/check).

Portfolio risk API: returns 95% VaR, Sharpe ratio, max drawdown, annualized volatility and a pairwise correlation matrix for a list of tickers, with optional weights.

API de calcul fiscal & retraite français 2026, sourcée et datée sur les 32 régimes de retraite. Chaque réponse porte ses sources et son niveau de confiance : fiable / estimé / partiel / non calculable.

Checks invoices against purchase details and returns evidence, discrepancies, and review signals through paid Base USDC x402 calls.

Pay-per-call API returning perpetual futures open interest for BTC, ETH, SOL, AVAX, LINK and ARB across OKX, Hyperliquid and dYdX: USD totals, per-exchange breakdown, 5-minute delta and an accumulating or deleveraging signal. $0.05 in USDC per call on Base or Solana.

Agent-payable APIs over x402 (USDC on Base): swaps, memecoins, 216 endpoints. No API keys, no signup. Pay per call.