x402 service changes Across the whole directory, x402 List has detected 130 payout address rotations and 2,166 price moves on the x402 wire in the last 90 days. Schema changes are listed below, not counted here.
What moved on the x402 wire. We fingerprint the full accepts[] on every probe, so a
payout address rotation at an unchanged price shows up here even when nothing else moves. Newest
first, last 90 days.
Also served as JSON and RSS .
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all payout price schema method
Showing changes for synthora only. show all services
Observed x402 service changes. Event timestamps are UTC. Time (UTC) Service Change Evidence 72d ago 2026-09-05 08:19 UTC SYNTHORA schema changed proof what moved schema removed GET /v1/onchain exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://onchain.hergertsynthora.com/service {"name":"USD Coin","version":"2"}
schema removed GET /v1/payto-preflight exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://payto-preflight.hergertsynthora.com/service {"name":"USD Coin","version":"2"}
schema removed GET /v1/prediction-markets exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://prediction-markets.hergertsynthora.com/service {"name":"USD Coin","version":"2"}
schema removed GET /v1/registry-watch exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://registry-watch.hergertsynthora.com/service {"name":"USD Coin","version":"2"}
schema added GET /v1/onchain exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://api.hergertsynthora.com/v1/onchain {"name":"USD Coin","version":"2"}
schema added GET /v1/payto-preflight exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://api.hergertsynthora.com/v1/payto-preflight {"name":"USD Coin","version":"2"}
schema added GET /v1/prediction-markets exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://api.hergertsynthora.com/v1/prediction-markets {"name":"USD Coin","version":"2"}
schema added GET /v1/registry-watch exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://api.hergertsynthora.com/v1/registry-watch {"name":"USD Coin","version":"2"}
73d ago 2026-09-04 10:02 UTC SYNTHORA schema changed proof what moved schema removed GET /v1/onchain exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://api.hergertsynthora.com/v1/onchain {"name":"USD Coin","version":"2"}
schema removed GET /v1/payto-preflight exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://api.hergertsynthora.com/v1/payto-preflight {"name":"USD Coin","version":"2"}
schema removed GET /v1/prediction-markets exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://api.hergertsynthora.com/v1/prediction-markets {"name":"USD Coin","version":"2"}
schema removed GET /v1/registry-watch exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://api.hergertsynthora.com/v1/registry-watch {"name":"USD Coin","version":"2"}
schema added GET /v1/onchain exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://onchain.hergertsynthora.com/service {"name":"USD Coin","version":"2"}
schema added GET /v1/payto-preflight exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://payto-preflight.hergertsynthora.com/service {"name":"USD Coin","version":"2"}
schema added GET /v1/prediction-markets exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://prediction-markets.hergertsynthora.com/service {"name":"USD Coin","version":"2"}
schema added GET /v1/registry-watch exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 application/json 300 https://registry-watch.hergertsynthora.com/service {"name":"USD Coin","version":"2"}
Measurement methodology