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Real-time and historical OHLCV candles (open/high/low/close/volume) for any crypto pair, a

https://api.hergertsynthora.com/v1/ohlcv-candles
● healthy a2a-agent

Real-time and historical OHLCV candles (open/high/low/close/volume) for any crypto pair, any interval. For backtesting and signal agents. Free source. $0.01 USDC via x402 on Base. SYNTHORA. First call FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

Category
a2a-agent
Chains
base
Price
$0.0500 USDC / call

Quality grade

How grading works
B+ 80.4 / 100
Availability 40.0 / 40
Endpoint responded (HTTP 402)
Payability 20.0 / 20
  • ✓ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✓ Price declared
Demand 20.4 / 40
26 distinct payers, 198 USDC transfers in the last 30 days
Owner verified 0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 6 h ago. On-chain activity last read 11 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

26 resource(s) advertised by this origin.

https://api.hergertsynthora.com/v1/air-quality
https://api.hergertsynthora.com/v1/bitcoin-fees
https://api.hergertsynthora.com/v1/defi-llama-tvl-ranking
https://api.hergertsynthora.com/v1/defi-yields
https://dnsdomain.hergertsynthora.com/service
https://api.hergertsynthora.com/v1/doaj-article-search
https://api.hergertsynthora.com/v1/ecb-forex-fixing-vs-market
https://api.hergertsynthora.com/v1/ecb-macro
https://api.hergertsynthora.com/v1/exchange-rates-verified
https://api.hergertsynthora.com/v1/fed-watch
https://api.hergertsynthora.com/v1/gas-oracle-multi
https://api.hergertsynthora.com/v1/gdelt-tension
https://api.hergertsynthora.com/v1/github-repo-activity
https://api.hergertsynthora.com/v1/historical-weather
https://npm-downloads-range.hergertsynthora.com/service
https://api.hergertsynthora.com/v1/payto-preflight
https://api.hergertsynthora.com/v1/polymarket-markets
https://api.hergertsynthora.com/v1/polymarket-trades
https://api.hergertsynthora.com/v1/port-watch
https://api.hergertsynthora.com/v1/registry-watch
https://api.hergertsynthora.com/v1/space-weather-risk
https://api.hergertsynthora.com/v1/stablecoin-supply
https://api.hergertsynthora.com/v1/top-crypto
https://api.hergertsynthora.com/v1/usgs-earthquakes
https://api.hergertsynthora.com/v1/volume-anomaly
https://who-gho-indicator-timeseries.hergertsynthora.com/service

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -X POST https://api.hergertsynthora.com/v1/air-quality
/.well-known/x402.json
https://api.hergertsynthora.com/.well-known/x402

Listed in

Directories this entry was found in.

a2a