api.xynaptic.io
Polygon · payout 0x3e39934989d579f5821eed7ba6a84b72f682f2c6
Answers HTTP 402
1 of 1 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-09-24
Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.
x402-style payments, last 7 days (Base)
unknown. not measured on this chain yet
no reading date
Method: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.
Delivery is not measured. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.
Chains · one payout address, each chain read on its own
| Chain | Payout address | Listings | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Polygon | 0x3e39934989d579f5821eed7ba6a84b72f682f2c6 | 148 | 1 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-24 | unknown. not measured on this chain yet |
- Hosts
- api.xynaptic.io
- Listings
- 148 registered in the x402 catalogue
- Price range
- unknown. Prices are decoded only for USDC on Base and Solana.
- Categories (auto)
- Market data (42), Other (24), Search (14), Commerce (13), Identity (13), Security (13), Web data (13), Onchain data (9), Inference (4), Developer tools (3)
- First seen
- 2026-10-05 · last seen 2026-10-05
Claim this merchant
Sign a message from the payout address 0x3e3993…82f2c6 to claim this page. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.
The payment ledger covers Base only for now, so it is not offered for Polygon.
Registrations · 148
| Endpoint | Chain | Category | Price | Catalogue date |
|---|---|---|---|---|
https://api.xynaptic.io/v1/crypto-onchain Xynaptic Crypto Onchain — live Bitcoin network data: recommended fees, mempool congestion, difficulty adjustment and hashrate context. Real-time from mempool.space. | Polygon | Onchain data | unknown | 2026-09-23 |
https://api.xynaptic.io/v1/crypto-orderflow Xynaptic Crypto Orderflow — real-time market microstructure: CVD (cumulative volume delta), buy/sell pressure ratio, aggressive market orders, whale trades (>$100k), order book imbalance. Parameter: ?pair=BTCUSD. Kraken… | Polygon | Market data | unknown | 2026-09-24 |
https://api.xynaptic.io/v1/crypto-price Xynaptic Crypto Price — real-time snapshot of 6 major crypto assets (BTC, ETH, SOL, ADA, LINK, DOT) with 24h changes, breadth and top movers. USD only, agent-ready. | Polygon | Market data | unknown | 2026-10-01 |
https://api.xynaptic.io/v1/crypto-risk Xynaptic Crypto Risk — drawdowns from ATH, 7d/30d momentum and risk grade for major crypto assets. Refreshed every 2 hours. | Polygon | Security | unknown | 2026-09-23 |
https://api.xynaptic.io/v1/crypto-screener Xynaptic Crypto Screener — the market pulse: top gainers and losers 24h, highest volumes, most extreme moves from the top 250. GET ?limit=5. Fresh attention feed for trading agents. | Polygon | Market data | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/crypto-tokenomics Xynaptic Crypto Tokenomics — supply structure: circulating, total, max supply, FDV, market cap, ATH distance, price. Parameter: ?symbol=btc (CoinGecko id). Vesting/unlocks in v2. | Polygon | Market data | unknown | 2026-09-24 |
https://api.xynaptic.io/v1/crypto-trading-analysis Xynaptic Crypto Trading Analysis — technical analysis of any Kraken pair: RSI(14), MACD, EMA 20/50/200, recent support/resistance, trend and momentum verdict. Parameters: ?pair=BTCUSD&timeframe=4h|1h|1d. Real-time OHLC. | Polygon | Market data | unknown | 2026-09-24 |
https://api.xynaptic.io/v1/crypto-validate Xynaptic Token Validate — full pre-purchase security audit of any token: contract checks (open source, proxy), honeypot detection, buy/sell taxes and slippage simulation, liquidity depth, exit liquidity (sell simulation… | Polygon | Security | unknown | 2026-09-24 |
https://api.xynaptic.io/v1/crypto-wallet-health Xynaptic Crypto Wallet Health — score any Bitcoin or EVM address: balance, tx count, first/last activity (age), activity pattern and a composite health verdict (dormant/active/empty/high-risk). GET ?address=...&chain=bt… | Polygon | Onchain data | unknown | 2026-09-28 |
https://api.xynaptic.io/v1/crypto-whales Xynaptic Crypto Whales — live large Bitcoin transfers straight from the network: biggest mempool transactions and recent block flows, sorted by value (BTC + USD). Spot accumulation/distribution in real-time. GET ?min_bt… | Polygon | Onchain data | unknown | 2026-09-28 |
https://api.xynaptic.io/v1/destination-brief Xynaptic Destination Brief — travel context for any city: Wikipedia summary, coordinates, population, country, timezone and what the place is known for. One call to ground an agent planning a trip. GET ?q=Jakarta (&lang… | Polygon | Developer tools | unknown | 2026-09-29 |
https://api.xynaptic.io/v1/energy-brief-live Xynaptic Energy Brief Live — one-shot energy synthesis: spot price + trend, solar and wind forecast, renewable signals, agent-ready assessment. The carrefour of the energy vertical. | Polygon | Market data | unknown | 2026-09-24 |
https://api.xynaptic.io/v1/energy-demand Xynaptic Energy Demand FR — live French electricity demand (RTE éCO2mix official): consumption MW, day-ahead forecast, CO2 rate g/kWh, per-fuel generation mix. Quarter-hourly freshness. GET (?date=YYYY-MM-DD, default to… | Polygon | Other | unknown | 2026-10-02 |
https://api.xynaptic.io/v1/energy-interconnections Xynaptic Energy Interconnections FR — live French cross-border power exchanges (RTE éCO2mix official): flows MW with England, Italy, Germany-Belgium, Switzerland, Spain (positive = import). GET (?date=YYYY-MM-DD, defaul… | Polygon | Other | unknown | 2026-10-02 |
https://api.xynaptic.io/v1/energy-opportunity Xynaptic Energy Opportunity — the premium signal: cheapest consumption windows in the next 24h, renewable surplus detection, expected savings. Tells an agent WHEN to act: charge EV now or in 2h, run the dishwasher at 14… | Polygon | Market data | unknown | 2026-09-24 |
https://api.xynaptic.io/v1/energy-price Xynaptic Energy Price — current electricity spot price (EUR/MWh) with 24h trend and hourly profile. Europe (awattar market data). Lightweight, real-time. | Polygon | Market data | unknown | 2026-10-03 |
https://api.xynaptic.io/v1/ev-charge-window Xynaptic EV Charge Window — the optimal charging window for an electric vehicle: cheapest contiguous hours fitting the required charge (?kwh=50®ion=fr), with renewable surplus preference, expected cost vs charging no… | Polygon | Other | unknown | 2026-09-24 |
https://api.xynaptic.io/v1/factoring-debtor-risk Xynaptic Factoring Debtor Risk — pre-advance credit assessment of an invoice debtor (French company): registry status, financial strength, payment-risk verdict (advance/caution/refuse) and recommended max exposure. Info… | Polygon | Security | unknown | 2026-09-29 |
https://api.xynaptic.io/v1/factoring-portfolio-risk Xynaptic Factoring Portfolio Risk — upload a set of invoices, get the portfolio risk profile: sector concentration, top risky debtors, total exposure, DSO hint and diversification verdict. Informational. POST {invoices:… | Polygon | Security | unknown | 2026-09-29 |
https://api.xynaptic.io/v1/factory-status Xynaptic Factory Status — the publicly known state of an industrial site: press mentions, company registry (active?), recent announcements. GET ?site=Nom+d+usine. Public information composite — not internal telemetry. | Polygon | Identity | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/fiat-usdc-rate Xynaptic Fiat-USDC Rate — best fiat↔USDC conversion rate per payment rail (Base, Polygon, Solana): Coinbase spot, spread, network fees, best-rail verdict. GET ?currency=EUR. | Polygon | Onchain data | unknown | 2026-10-03 |
https://api.xynaptic.io/v1/flight-airport-brief Xynaptic Flight Airport Brief — any airport worldwide by name or IATA code: country, IATA/ICAO codes, coordinates, elevation, runway count, served airlines hint. Open data (Wikidata). GET ?q=Jakarta or ?q=CGK. | Polygon | Commerce | unknown | 2026-09-29 |
https://api.xynaptic.io/v1/flight-alternatives Xynaptic Flight Alternatives — when a destination is disrupted, find the 3 nearest major alternative airports with their real-time weather and operating conditions, ranked with an agent-ready recommendation. On-demand, … | Polygon | Commerce | unknown | 2026-09-23 |
https://api.xynaptic.io/v1/flight-asia-brief Xynaptic Flight Asia Brief — aviation panorama of any Asian (or world) country: major airports with IATA codes and coordinates, local airlines with hubs. Open data (Wikidata). GET ?country=Indonesia. | Polygon | Commerce | unknown | 2026-09-29 |
https://api.xynaptic.io/v1/flight-route-risk Xynaptic Flight Route Risk — real-time risk assessment of an air route (departure/arrival ICAO): weather at both airports, recent aviation events, regional traffic density, composite risk score with agent-ready verdict.… | Polygon | Commerce | unknown | 2026-09-23 |
https://api.xynaptic.io/v1/flight-status Xynaptic Flight Status — real-time status of any flight by callsign (e.g. AFR7TE): airborne/ground phase, altitude, speed, position, vertical trend, and an agent-ready assessment. On-demand, parameter: ?callsign=AFR7TE. | Polygon | Commerce | unknown | 2026-09-23 |
https://api.xynaptic.io/v1/gas-tariff-zone Xynaptic Gas Tariff Zone — the official regulated gas price zone (1-6) for any French postcode, from CRE open data (9,700+ communes). Zone 1 = cheapest baseline, zone 6 = most expensive — know your gas cost level before… | Polygon | Onchain data | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/grid-status Xynaptic Grid Status — current European grid health proxy: price volatility, renewable stress signals, load-shift recommendations. Will be enriched with ENTSO-E data (grid-status ENTSO-E access). | Polygon | Market data | unknown | 2026-09-24 |
https://api.xynaptic.io/v1/health-clinical-trials Xynaptic Health Clinical Trials — worldwide clinical trials from ClinicalTrials.gov v2: search by condition, drug or sponsor. Status (recruiting?), phase, eligibility criteria, contacts. GET ?condition=diabetes (&drug=&… | Polygon | Other | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/health-drug-info Xynaptic Health Drug Info — official drug fact sheet: active ingredient, brand/generic names, form, route, dosage label highlights, warnings and boxed warnings from openFDA (US) — official public data, not advice. GET ?… | Polygon | Other | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/health-healthcare-provider Xynaptic Health Healthcare Provider — French health professionals from the official RPPS directory (Annuaire Santé): doctors by name or specialty in a city, with registration. GET ?name=Martin&city=Paris or ?specialty=c… | Polygon | Other | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/health-hospital-info Xynaptic Health Hospital Info — French healthcare establishments from official ScopeSanté (HAS): name, city, contact, certifications and activity. GET ?name=CHU or ?city=Lyon. Official French data. | Polygon | Other | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/health-medical-guidelines Xynaptic Health Medical Guidelines — official recommendations for a condition: HAS (Haute Autorité de Santé) French guidelines via live search + PubMed Central systematic reviews. GET ?condition=diabetes. Informational … | Polygon | Other | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/health-medical-literature Xynaptic Health Medical Literature — PubMed search for medical research: articles, abstracts, journals, dates, PMIDs. GET ?query=aspirin cardiovascular (&limit=5). Evidence-based medicine research. | Polygon | Search | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/health-news Xynaptic Health News — live health/medicine press feed (Google News RSS): real titled articles from medical media + optional LLM synthesis. GET (&summarize=true). Informational only. | Polygon | Web data | unknown | 2026-09-28 |
https://api.xynaptic.io/v1/industrial-energy Xynaptic Industrial Energy — energy costs for industrial users: spot electricity prices, gas prices, and the energy transition context — what energy costs mean for production. GET ?region=fr. | Polygon | Onchain data | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/industrial-market Xynaptic Industrial Market — industrial sector profile: producer price indices (INSEE), commodity input costs, live sector press — a one-call market synthesis. GET ?sector=manufacturing. | Polygon | Market data | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/industrial-news Xynaptic Industrial News — live industrial/manufacturing press feed (Google News RSS): real titled articles + optional LLM synthesis. GET (&summarize=true). | Polygon | Web data | unknown | 2026-09-28 |
https://api.xynaptic.io/v1/industrial-price Xynaptic Industrial Price — French industrial producer price indices (IPPI) from INSEE official statistics: monthly price evolution by industrial sector. GET ?sector=all. Official French data. | Polygon | Market data | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/industrial-supply Xynaptic Industrial Supply — supply/demand tension reading for a sector: input price evolution (commodities + IPPI), sector press signals — a transparent tension indicator. GET ?sector=metallurgy. Composite, honest meth… | Polygon | Market data | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/insurance-claim Xynaptic Insurance Claim — describe your incident in free language, get a structured claim form: date, place, goods, circumstances, pre-estimated damages, suggested documents, timeline. POST { incident_narrative }. The … | Polygon | Other | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/insurance-premium Xynaptic Insurance Premium — the pedagogical price decomposition: taxes, legal contributions, pure premium vs commercial load — understand what you pay. GET ?type=auto&annual_premium=650. Transparent calculation. | Polygon | Other | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/insurance-profile Xynaptic Insurance Profile — the insurance KYB: is this broker/agent officially registered? We find the ORIAS record (French official registry of insurance intermediaries) + linked company. GET ?name=Courtier+X or ?oria… | Polygon | Identity | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/insurance-search Xynaptic Insurance Search — the insurance type panorama: standard coverage families for auto/home/health/pro, current regulatory news. GET ?type=auto. Market knowledge, agent-ready. | Polygon | Search | unknown | 2026-09-28 |
https://api.xynaptic.io/v1/intermodal-compare Xynaptic Intermodal Compare — train vs plane between two cities: REAL next train journeys (Navitia/SNCF: times, duration, transfers) vs flight estimate (great-circle distance, typical duration+price range, CO2 per passe… | Polygon | Other | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/job-market-brief Xynaptic Job Market Brief — recruitment tensions for any French department, from the official BMO survey (France Travail / Dares, 2026): top-10 hardest-to-fill jobs, or one job's hiring projects and difficulty share. GE… | Polygon | Other | unknown | 2026-10-04 |
https://api.xynaptic.io/v1/job-search Xynaptic Job Search — live French job offers from the official France Travail API v2: keyword + department + contract type filters, up to 10 offers with title, employer, location, contract, salary when published, and th… | Polygon | Other | unknown | 2026-10-04 |
https://api.xynaptic.io/v1/legal-brief Xynaptic Legal Brief FR — French legal watch by keyword: official sources (Légifrance, service-public.gouv.fr, ministères) search results with titles, links and snippets — labor law, contracts, regulations. GET ?q=licen… | Polygon | Other | unknown | 2026-10-01 |
https://api.xynaptic.io/v1/logistics-risk Xynaptic Logistics Risk — current logistics disruptions affecting French/European flows: rail strikes (SNCF official data), sector press, + your specific route analysis. GET ?mode=rail (or POST a route description). | Polygon | Security | unknown | 2026-09-26 |
https://api.xynaptic.io/v1/news-asia Xynaptic Asia News v2 — structured events across Asia (China, Japan, India, Korea, ASEAN, last 3h): importance, lifecycle, entities, sectors, multi-source verification, agent-ready actions. Refreshed every 2 hours. | Polygon | Web data | unknown | 2026-09-28 |
Descriptions are the seller’s own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.
Data CC-BY-4.0, attribution: data by satohub.ai. Collector run 2026-10-05. Appearing here is not an endorsement. Check an endpoint with the doctor.