x402 API Quickstart
Every paid route on our own x402 API, with one copy-pasteable curl each. Run it as-is: no key, no signup, no schema archaeology — you get the real payment challenge back immediately.
This page exists because we hit the opposite problem building x402 Doctor: endpoints that hide their input shape deep in a discovery doc, so a checker has to guess. We're not selling a conformance report to anyone else until our own 8 routes pass that bar first — this page is that proof, and every curl on it was run against the live endpoint before this page went up, not simulated.
Live profit-and-loss telemetry for a real production crypto grid-trading bot. Optional ?depth=N (up to 1000, $0.05) adds historical equity datapoints.
curl -s https://api.stelardigital.com/telemetry
Unpaid, no arguments changed — returns HTTP 402 with the full payment challenge (scheme, network, payTo, amount) in the body. Pay it (any x402-aware HTTP client / wallet) and retry with the payment proof attached to get the real response.
Grid-trading parameter recommendation — grid count, spacing percent, price band, per-grid USD allocation.
curl -s https://api.stelardigital.com/gridparams
Unpaid, no arguments changed — returns HTTP 402 with the full payment challenge (scheme, network, payTo, amount) in the body. Pay it (any x402-aware HTTP client / wallet) and retry with the payment proof attached to get the real response.
Market regime classification (choppy / uptrend / downtrend / high-volatility) plus a grid-trading suitability verdict.
curl -s 'https://api.stelardigital.com/regime?symbol=SOL'
Unpaid, no arguments changed — returns HTTP 402 with the full payment challenge (scheme, network, payTo, amount) in the body. Pay it (any x402-aware HTTP client / wallet) and retry with the payment proof attached to get the real response.
Sentiment score (-1 to +1) and label for a crypto asset or arbitrary text, via Claude Haiku.
curl -s 'https://api.stelardigital.com/sentiment?symbol=SOL'
Unpaid, no arguments changed — returns HTTP 402 with the full payment challenge (scheme, network, payTo, amount) in the body. Pay it (any x402-aware HTTP client / wallet) and retry with the payment proof attached to get the real response.
Current price, 24h/7d percent change, and a bullish/bearish/neutral signal. Optional ?candles=N (up to 30, $0.05) adds daily OHLC candles.
curl -s 'https://api.stelardigital.com/pricecheck?symbol=SOL'
Unpaid, no arguments changed — returns HTTP 402 with the full payment challenge (scheme, network, payTo, amount) in the body. Pay it (any x402-aware HTTP client / wallet) and retry with the payment proof attached to get the real response.
Volatility and drawdown risk regime — current ATR percent versus its 30-day p80 baseline.
curl -s 'https://api.stelardigital.com/risk?symbol=SOL'
Unpaid, no arguments changed — returns HTTP 402 with the full payment challenge (scheme, network, payTo, amount) in the body. Pay it (any x402-aware HTTP client / wallet) and retry with the payment proof attached to get the real response.
Complete market brief in one call — trend regime, AI sentiment, live price, and volatility risk combined.
curl -s 'https://api.stelardigital.com/bundle/market-brief?symbol=SOL'
Unpaid, no arguments changed — returns HTTP 402 with the full payment challenge (scheme, network, payTo, amount) in the body. Pay it (any x402-aware HTTP client / wallet) and retry with the payment proof attached to get the real response.
Everything in /bundle/market-brief plus an AI-generated synthesis naming the single biggest risk factor.
curl -s 'https://api.stelardigital.com/bundle/deep-signal?symbol=SOL'
Unpaid, no arguments changed — returns HTTP 402 with the full payment challenge (scheme, network, payTo, amount) in the body. Pay it (any x402-aware HTTP client / wallet) and retry with the payment proof attached to get the real response.
Full discovery doc
Machine-readable catalog of all resources above, with per-route pricing, tags, and Bazaar input schema: api.stelardigital.com/.well-known/x402
We run this business on these rails ourselves — live endpoints, open-source receipts, honest numbers.
See the live x402 API → x402-receipts on GitHub Read our real revenue at /openx402 Setup — Done For You
Have an API? We’ll make it agent-payable. $149 flat: x402 paywall wiring on one endpoint you already run, pricing, machine-readable catalog listing, proven with a real paid test call. Delivered within 48 hours. You keep all keys — nothing hosted by us.