Vextorium for Python

Data your trading bot or AI agent pays for per call: no accounts, no API keys.
Website · Catalog (552 services) · OpenAPI · MCP server · x402

550+ pay-per-call data services for trading bots and AI agents: perp funding, liquidation maps, Hyperliquid markets and whales, market regime, prices, on-chain data on 30+ chains, DeFi, official statistics and more.

No API keys, no sign-up. A Base wallet with a little USDC is the account; each call is paid automatically via x402 (typically 0.003–0.01 USDC). Failed calls are not charged.

pip install vextorium            # or: pip install "vextorium[freqtrade]"

from vextorium import Vextorium

vx = Vextorium(private_key="0x...", budget_usd=1.0, max_price_usd=0.02)  # use a separate small wallet
vx.call("perp-funding", currency="BTC")        # funding, premium, open interest
vx.call("hyperliquid-liquidation-map", currency="ETH", brackets=10)
vx.call("market-regime")                       # risk-on / risk-off score
vx.services("funding")                         # free: search the catalog
print(vx.spent / 1e6, "USDC spent")

Safety: every call is capped by max_price_usd, the session by budget_usd (BudgetExceeded is raised before paying), payments only go out on Base USDC, and one payment runs at a time per wallet.

freqtrade

Add funding, nearest liquidations and market regime as columns (latest candle only, no look-ahead), cached so a bot calls each service at most once per refresh_minutes:

from vextorium.freqtrade import VextoriumContext

class MyStrategy(IStrategy):
    vx = VextoriumContext(budget_usd=2.0, refresh_minutes=60)   # key from VEXTORIUM_KEY

    def populate_indicators(self, dataframe, metadata):
        dataframe = self.vx.add_columns(dataframe, metadata["pair"])
        # vx_funding_annual_pct, vx_premium_pct, vx_open_interest_usd, vx_nearest_long_liq_pct,
        # vx_nearest_short_liq_pct, vx_long_at_risk_usd, vx_short_at_risk_usd, vx_regime_score
        return dataframe

Cost example: 1 pair, refresh 60 min, 3 signals ≈ 24 × 0.019 = 0.46 USDC/day.

Full catalog: https://api.vextorium.com/catalog.json · OpenAPI: https://api.vextorium.com/openapi.json · MCP server: https://github.com/bru1noia/vextorium-mcp

License: MIT