{"slug":"api-402rates-com-v1-settlement-costs-bd76ff","title":"What a USDC transfer actually costs on Base, Polygon, Arbitrum, Ethereum and XDC","host":"api.402rates.com","method":"GET","resource":"https://api.402rates.com/v1/settlement/costs","category":"market","description":"What a USDC transfer actually costs on Base, Polygon, Arbitrum, Ethereum and XDC, measured rather than assumed: gas units simulated per chain against live prices and fresh chain heads, plus the rollup L1 data fee where it applies. Every figure ships with its inputs and the block it was read at, so y","price_listed":0.01,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":13,"reported_payers_30d":2,"networks":["eip155:137","eip155:42161","eip155:50","eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"chains":"base,polygon,arbitrum,ethereum,xdc"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"chains":{"description":"comma-separated list of: base, polygon, arbitrum, ethereum, xdc. Order does not matter and duplicates are ignored. Omit it to price all five, which is the usual call and costs exactly the same.","pattern":"^(base|polygon|arbitrum|ethereum|xdc)(,(base|polygon|arbitrum|ethereum|xdc))*$","type":"string"}},"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"What a USDC transfer actually costs on Base, Polygon, Arbitrum, Ethereum and XDC, measured rather than assumed: gas units simulated per chain against live prices and fresh chain heads, plus the rollup L1 data fee where it applies. Every figure ships with its inputs and the block it was read at, so you can recompute it. Cheapest first; a chain that cannot be measured is excluded, never estimated.","last_updated":"2026-09-08T10:19:15.447Z","schemes":["exact"]}