21 production endpoints covering space data, wallet intelligence and on-chain compliance. Pay per request in USDC. No signup, no API keys and no subscriptions required.
# 1. Call an endpoint — get 402 $ curl https://api.celtagrupo.com/wallet/risk-score \ ?address=0xd8dA...045&chain=polygon HTTP/2 402 Payment Required payment-required: {"scheme":"exact", "amount":"10000","asset":"USDC", "network":"eip155:137",...} # 2. Agent pays 0.01 USDC on Polygon # 3. Retry with signed payment header $ curl ... -H "X-PAYMENT: <signed>" { "risk_tier": "ESTABLISHED", "is_sanctioned_ofac": false, "wallet_age_days_on_this_chain": 1887, "native_transaction_count": 1, "is_delegated_eoa_eip7702": false }
Solar weather, aurora forecasts, satellite tracking and asteroid risk — sourced from NASA, NOAA SWPC and CelesTrak. Data ingested continuously and served cached for performance.
Daily NASA APOD with title, explanation and image URL. Cached hourly.
Real-time solar flare activity, X-ray flux levels and geomagnetic storm threat assessment from NOAA SWPC.
Active natural disaster events worldwide from NASA EONET: wildfires, storms, floods and volcanic activity.
Upcoming asteroid close approaches with risk assessment from NASA NeoWs.
Active satellite conjunction risk events and close approach warnings from CelesTrak SGP4 orbital data.
Kp index, hemispheric power and aurora visibility latitude estimate from NOAA SWPC.
24 and 48-hour X-class and M-class solar flare probability forecasts from NOAA SWPC.
Current shortwave and HF radio propagation conditions by frequency range from NOAA SWPC.
Current moon phase, illumination percentage, rise and set times and visibility conditions.
Recent confirmed exoplanet discoveries with orbital and physical parameters from NASA Exoplanet Archive.
Upcoming rocket launches worldwide with mission details, launch vehicle and status from Launch Library 2.
Multi-chain wallet risk assessment, OFAC sanctions screening, smart contract safety and x402 payment verification across Polygon, Ethereum, Base, Arbitrum and Cronos.
Activity history, OFAC screening and EIP-7702 detection. Returns risk tier, age and transaction counts. Multi-chain.
Source verification, proxy and upgradeability detection and OFAC screening on contract addresses. Multi-chain.
OFAC screening, contract verification and wallet activity combined into one trust tier in a single call.
Direct match and one-hop counterparty screening against the official US Treasury SDN list. Multi-chain.
Probabilistic classification of whether a wallet exhibits autonomous AI agent or human behavioral patterns.
Complete risk profile checked across all 5 supported chains simultaneously in a single call.
Identifies the earliest known funding source including internal transactions, with OFAC check on the funder.
Ownership status, mint function detection, source code verification and OFAC screening on token contracts.
Verifies a transaction hash as a genuine on-chain EIP-3009 payment, decoding payer, payee and amount.
Live uptime and latency statistics for major x402 facilitators from our continuous independent monitoring.
Standard HTTP with x402 — the same pattern works for human developers and autonomous AI agents.
Make a standard GET request to any endpoint. No API key or authentication header required. You will receive a 402 Payment Required response with payment details encoded in the header.
Your x402-compatible client signs an EIP-3009 gasless authorization for the requested amount in USDC on Polygon. Payments settle in seconds with sub-cent transaction fees.
Retry the same request with the signed payment header attached. Receive the full response. Subsequent requests for cached data are served from Redis, no repeat payment needed during the cache window.