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opportunity-api-production.up.railway.app api chains
https://opportunity-api-production.up.railway.app/api/chains
answers 402
Top 30 blockchains ranked by DeFi TVL (DeFiLlama). Name, TVL in USD, native token symbol.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x5be6C12339EAF5EB18db8012f54955a2250Bd3d9
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 356 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:37:49.534Z (1d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fopportunity-api-production.up.railway.app%2Fapi%2Fchains"