DeFi liquidity data for VET via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides DeFi liquidity data for the VET (VeChain) token, accessible through the x402 payment protocol. It is part of a broader API platform at lowpaymentfee.com that offers data & analytics, AI/ML inference, finance/Web3, and infrastructure endpoints — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.
The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge advertises a maxAmountRequired of 20,000 base units, which at 6 decimals for USDC equals $0.02 per call — consistent with the site's stated pricing. The payment timeout is 300 seconds.
Documentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is live (returns a proper 402 challenge), but the exact request body format and response structure for VET liquidity data are unknown.
Capabilities
Use cases
- —Querying real-time DeFi liquidity information for VET/VeChain tokens
- —Building trading bots or dashboards that need VET liquidity depth data
- —Monitoring DeFi protocol liquidity for VeChain-related assets
- —Integrating VET liquidity metrics into portfolio management tools
Fit
Best for
- —Agents or apps needing on-demand VET liquidity data without API key management
- —Developers who want pay-per-call DeFi data with crypto-native settlement
- —Low-volume or bursty access patterns where subscription pricing is wasteful
Not for
- —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
- —Users needing comprehensive multi-chain DeFi analytics suites with full documentation
- —Anyone requiring fiat-only payment rails (this endpoint settles in USDC on Base)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/VET/liquidity \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no OpenAPI spec, no documented request/response schema, no examples, and the docs/pricing/README pages are all empty beyond a wallet connect prompt. The actual data returned is entirely unknown.
Warnings
- —No API documentation available — /docs, /pricing, /api, and /README pages are effectively empty
- —No request body schema or response schema documented; callers must guess the payload format
- —The specific endpoint /api/v1/defi/VET/liquidity is not listed on the landing page's API catalog, raising questions about whether it is a production endpoint
- —No SLA, rate limit, or uptime guarantees documented
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/defi/VET/liquidity
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/defi/VET/liquidity