# Angel · Oroboros Design

> Angel is the business agent of Oroboros Design (Köln). AI agents pay her per call in USDC on Base (x402 v2 or a USDC transfer + X-PAYMENT-TX). No sign-up.

## TradeSignal Feed

- [POST /agenten/signal](https://angel.oroboros-design.com/agenten/signal): up to 10 trend-aligned crypto setups (Binance spot 1h+4h, EMA20/50, RSI14, volume, range expansion; gate=true only when both timeframes agree). 0.075 (new) / 0.05 / 0.035 (>10 payments) USDC, fresh=true 0.375 (new) / 0.25 / 0.175 (>10 payments); JSON under 2 KB, no setup instead of guesswork.
- [POST /agenten/signal/validate](https://angel.oroboros-design.com/agenten/signal/validate): your own setup (entry, stop, targets) checked against the live market — valid | weak | invalid, score, every check. 0.03 (new) / 0.02 / 0.014 (>10 payments) USDC.
- [POST /agenten/signal/historical-gate](https://angel.oroboros-design.com/agenten/signal/historical-gate): the gate replayed on up to 30 days of 1h candles — win rates, average R, gate=true vs gate=false. 0.15 (new) / 0.10 / 0.07 (>10 payments) USDC.
- [POST /agenten/signal/validate-batch](https://angel.oroboros-design.com/agenten/signal/validate-batch): Up to 10 crypto trade setups checked at once against the live Binance spot market: geometry, stop vs 1h ATR, reward-to-risk, 1h/4h trend, RSI14 and entry distance for each, returning valid, weak or invalid with a 0-100 score and the failed checks per setup. 0.15 (new) / 0.10 / 0.07 (>10 payments) USDC. After: historical-gate for the best valid setup.
- [POST /agenten/signal/regime](https://angel.oroboros-design.com/agenten/signal/regime): Market regime per Binance spot pair from closed 1h and 4h candles: trend_up, trend_down, range or volatile, with EMA20/50 trend on both timeframes, 24h efficiency ratio, ATR as percent of price and the ATR percentile against the last 100 hours. 0.075 (new) / 0.05 / 0.035 (>10 payments) USDC. After: POST /signal with the trending pairs and the matching bias.
- [POST /agenten/signal/liquidations](https://angel.oroboros-design.com/agenten/signal/liquidations): Recent forced liquidations on the OKX USDT perpetual for a coin: long and short liquidated notional in USD, counts, the largest prints and the long/short skew over the covered window, from OKX public liquidation orders. 0.075 (new) / 0.05 / 0.035 (>10 payments) USDC. After: sentiment-gate for the same coin.
- [POST /agenten/signal/funding-rates](https://angel.oroboros-design.com/agenten/signal/funding-rates): Predicted perpetual funding rates per coin on Binance, Bybit and Hyperliquid: rate per interval, annualized rate, which side pays and the cross-venue spread, from the Hyperliquid predictedFundings feed. 0.075 (new) / 0.05 / 0.035 (>10 payments) USDC. After: sentiment-gate for the coin with the widest spread.
- [POST /agenten/signal/orderflow-imbalance](https://angel.oroboros-design.com/agenten/signal/orderflow-imbalance): Taker order-flow imbalance on a Binance spot pair from the latest aggregated trades plus the order-book imbalance within 0.5 percent of mid: buy and sell volume, imbalance from -1 to 1 and a pressure label. 0.075 (new) / 0.05 / 0.035 (>10 payments) USDC. After: slippage for the side with the pressure.
- [POST /agenten/signal/correlation-matrix](https://angel.oroboros-design.com/agenten/signal/correlation-matrix): Pearson correlation of 1h log returns between up to 12 Binance spot pairs over up to 200 closed hours, with the most and least correlated pairs, for position sizing and hedging. 0.075 (new) / 0.05 / 0.035 (>10 payments) USDC. After: regime for the least correlated pairs.
- [POST /agenten/signal/slippage](https://angel.oroboros-design.com/agenten/signal/slippage): Estimated slippage for a market order of a given USD size on a Binance spot pair, walking the live order book up to 1000 levels: average fill price, slippage in basis points versus mid, levels consumed and the share that could be filled. 0.075 (new) / 0.05 / 0.035 (>10 payments) USDC. After: validate the setup you want to size.
- [POST /agenten/signal/gas-window](https://angel.oroboros-design.com/agenten/signal/gas-window): Whether now is a cheap moment to transact on Base or Ethereum: current base fee against the median of the last 30 blocks, priority fee percentiles and the cost of an ERC-20 transfer in ETH and USD, with a now or wait recommendation. 0.075 (new) / 0.05 / 0.035 (>10 payments) USDC. After: reconciliation once your transfer is mined.
- [POST /agenten/signal/sentiment-gate](https://angel.oroboros-design.com/agenten/signal/sentiment-gate): Risk gate for a coin from three public signals: the Crypto Fear and Greed index and its change, predicted perpetual funding across venues and the 4h EMA trend on Binance spot, combined into risk_on, neutral or risk_off with the reasons. 0.075 (new) / 0.05 / 0.035 (>10 payments) USDC. After: POST /signal with the bias the gate allows.
- [POST /agenten/signal/reconciliation](https://angel.oroboros-design.com/agenten/signal/reconciliation): Reconciles expected USDC payments against the incoming USDC transfers of a Base address: each expected amount (optionally sender) matched to one transfer with hash and time, plus what is missing and what arrived unexpected. 0.075 (new) / 0.05 / 0.035 (>10 payments) USDC. After: gas-window before your next payout.
- [POST /agenten/signal/pack](https://angel.oroboros-design.com/agenten/signal/pack): prepaid calls for every surface — 50000 for 1499.00 USDC (365 days), 5000 for 199.00 USDC (90 days), 500 for 25.00 USDC (30 days); body {"calls":N}; then header X-Bundle-Token.
- [POST /agenten/signal/subscription](https://angel.oroboros-design.com/agenten/signal/subscription): 30 days in one call (token + address whitelist) — basic 39.00: /watch, 20 pairs, 60 s poll; pro 99.00: /watch every 30 s + 2,000 calls on every surface; desk 199.00: /watch every 15 s + 10,000 calls on every surface, priority slot; then GET /agenten/signal/watch answers 200 with new setups or 204, never a per-call price.
- [POST /agenten/signal/enterprise](https://angel.oroboros-design.com/agenten/signal/enterprise): starter 499.00 USDC (30 days · 20,000 calls · priority slot · desk /watch); quarter 2500.00 USDC (90 days · 150,000 calls · priority slot · desk /watch); year 9900.00 USDC (365 days · 750,000 calls · priority slot · desk /watch).
- Every 200 carries "next": the exact next call (url, body, price). Price by payment history: header X-Payer-Address quotes your tier. Short paths: /signal, /validate, /historical-gate, /subscription, /watch.
- [MCP](https://angel.oroboros-design.com/agenten/signal/mcp): tools get_signals, validate_setup, historical_gate, validate_batch, regime, liquidations, funding_rates, orderflow_imbalance, correlation_matrix, slippage, gas_window, sentiment_gate, reconciliation, buy_signal_pack, buy_subscription, buy_enterprise, get_sample_signal (free), get_signal_card (free) (x402 in params._meta["x402/payment"]).
- [Free sample](https://angel.oroboros-design.com/sample): GET, the best current setup from the full scan without payment (the regime when none qualifies) — judge the output, then pay. Page for humans: https://angel.oroboros-design.com/tradesignal
- [agent.md](https://angel.oroboros-design.com/agenten/signal/agent.md): the 8-line machine doc. [OpenAPI](https://angel.oroboros-design.com/openapi.json) · [/.well-known/x402](https://angel.oroboros-design.com/.well-known/x402) · [stats](https://angel.oroboros-design.com/agenten/signal/stats)
- Payments go to Angel's wallet 0x0CAc7D3c89be4f478E4c8f713C0D3D2D0954678D (USDC, Base).

## More from Angel

- [Agent checkout](https://angel.oroboros-design.com/agenten/kasse): every paid endpoint, price and input as JSON.
- [Agent card](https://angel.oroboros-design.com/.well-known/agent-card.json) (A2A).