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Hergertsynthora

Hergertsynthora is an x402-native service at https://api.hergertsynthora.com, indexed from the x402 Bazaar (Coinbase's public discovery directory). It charges callers itself in USDC on Base and is paid directly at its own wallet; Monex Protocol passes your request and payment headers through untouched. 12 endpoints listed.

Base

Offers

OfferEndpointPrice
V1 Bitcoin Fees
SYNTHORA bitcoin-fees: Bitcoin fee tiers in sat/vB (fastest/half-hour/hour/economy/minimum) plus current block height. Source: mempool.space public API, keyless. Bitcoin only.
/m/bz-api-hergertsynthora-com/v1/bitcoin-fees0.005 USDC
V1 Defi Llama Tvl Ranking
SYNTHORA defi-llama-tvl-ranking: Top DeFi protocols by TVL with rank, chain, category and 1d/7d change, capped list (default 50, max 200 via {"limit":N}). Source: api.llama.fi/protocols (DefiLlama), keyless, timestamped.
/m/bz-api-hergertsynthora-com/v1/defi-llama-tvl-ranking0.005 USDC
V1 Defi Yields
SYNTHORA defi-yields: stablecoin DeFi yields ranked with a risk outlier detector — APY vs class median (>=3x median = the excess yield IS the risk price). Only pools with TVL >= $10M. Source: DefiLlama, free, no key. $0.005 USDC x402 Base.
/m/bz-api-hergertsynthora-com/v1/defi-yields0.005 USDC
V1 Ecb Forex Fixing Vs Market
SYNTHORA ecb-forex-fixing-vs-market: ECB daily EUR/USD fixing vs live market rate: deviation in basis points, direction and >25bps alert. Sources: official ECB eurofxref-daily.xml + open.er-api.com, both keyless.
/m/bz-api-hergertsynthora-com/v1/ecb-forex-fixing-vs-market0.005 USDC
V1 Polymarket Markets
Search prediction markets ACROSS PLATFORMS (Polymarket + Kalshi) in one call: live prices, implied probability, volume, liquidity, end date and market conviction. Server-side search that actually finds the market (bitcoin, fed, election, geopolitics). For trading and forecasting agents tracking event odds. $0.05 USDC x402 Base. Input: {"input": "bitcoin"} (optional filter). Ed25519-signed.
/m/bz-api-hergertsynthora-com/v1/polymarket-markets0.05 USDC
V1 Space Weather Risk
SYNTHORA space-weather-risk: composite operational space-weather risk verdict fusing 4 NOAA SWPC feeds (Kp/G scale, GOES X-ray flare class, solar wind, proton flux) — for defense, aviation, satellites, power grid, precision GPS. $0.01 USDC x402 Base.
/m/bz-api-hergertsynthora-com/v1/space-weather-risk0.01 USDC
V1 Stablecoin Depeg
SYNTHORA stablecoin-depeg: depeg radar for 8 major stablecoins (USDT, USDC, DAI, USDS, USDe, PYUSD, USDD, FDUSD), each measured by TWO independent sources (CoinGecko + DefiLlama) with inter-source discrepancy reported — a real depeg shows in both; a single-source blip is an oracle artifact. Severity levels in bps. Free sources, no key. $0.006 USDC x402 Base.
/m/bz-api-hergertsynthora-com/v1/stablecoin-depeg0.006 USDC
V1 Stablecoin Supply
SYNTHORA stablecoin-supply: circulating USD supply, price and peg deviation in basis points for the top stablecoins (USDT, USDC, DAI...), with a depeg alert flag above 50 bps. Optional symbol filter. Free source: stablecoins.llama.fi (DefiLlama), no API key, timestamped.
/m/bz-api-hergertsynthora-com/v1/stablecoin-supply0.006 USDC
V1 Top Crypto
SYNTHORA top-crypto: Top N cryptocurrencies by market cap (default 10, max 50): rank, price, 24h change, volume and market cap in USD. Source: CoinGecko free API, keyless, timestamped.
/m/bz-api-hergertsynthora-com/v1/top-crypto0.005 USDC
V1 Trending Cross
SYNTHORA trending-cross: crypto trending VERIFIED by two-source consensus — an asset trending on CoinGecko AND gaining on Binance at once is a confirmed signal; trending on one only is noise or a localized pump. Top gainers/losers with volume included. Free sources, no key. $0.005 USDC x402 Base.
/m/bz-api-hergertsynthora-com/v1/trending-cross0.005 USDC
V1 Usgs Earthquakes
SYNTHORA usgs-earthquakes: latest earthquakes (M>=4.5 default, tunable) with PAGER alert level, tsunami flag and ACTIVE SEISMIC CLUSTER detection (>=3 events same zone in 24h) — the actionable signal for insurance-risk and disaster prediction markets. Source: USGS FDSN (official US, real-time, no key). $0.005 USDC x402 Base.
/m/bz-api-hergertsynthora-com/v1/usgs-earthquakes0.005 USDC
V1 Who Gho Timeseries
SYNTHORA who-gho-timeseries: WHO Global Health Observatory indicator time series by country (life expectancy etc.) — public-health data for research and policy agents. $0.005 USDC x402 Base. Ratings: GET /v1/ratings/who-gho-timeseries.
/m/bz-api-hergertsynthora-com/v1/who-gho-timeseries0.005 USDC

Machine-readable: openapi.json with x-payment-info offers.

Try it live

Run the full MPP flow from your browser: catch the 402, sign the payment with your wallet, and watch it settle on-chain.

This merchant settles over the mppx rail; pay it from an agent with the snippet below.

Pay with an agent

Any MPP or x402-compatible client works. With mppx, payment is automatic:

import { Mppx, evm } from 'mppx/client'
import { privateKeyToAccount } from 'viem/accounts'

const mppx = Mppx.create({
  methods: [evm({
    account: privateKeyToAccount(process.env.KEY),
    currencies: [evm.assets.base.USDC],
  })],
})

const res = await mppx.fetch('https://api.meshgateway.co/m/bz-api-hergertsynthora-com/v1/bitcoin-fees')
// 402 challenge signed and settled automatically; response includes Payment-Receipt

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/bz-api-hergertsynthora-com/v1/bitcoin-fees
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …