DeFi liquidity data for JST token, paid per-request via x402 on Base network.
What it does
This endpoint at lowpaymentfee.com provides DeFi liquidity data for the JST (JUST) token. It is part of a broader platform offering data & analytics, AI/ML, finance/Web3, and infrastructure APIs, all accessible via the x402 payment protocol on the Base network with no API keys or rate limits required.
The specific endpoint `/api/v1/defi/JST/liquidity` accepts POST requests and returns JSON. Payment is settled in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base. The maximum amount required per request is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals). This matches the platform's advertised flat pricing of $0.02 per request across all endpoints.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI schema, no request/response examples, and no description of what fields the liquidity response contains. The endpoint is confirmed live via a valid 402 challenge, but the actual data quality and response structure are unknown.
Capabilities
Use cases
- —Querying real-time liquidity depth for the JST (JUST) token across DeFi protocols
- —Monitoring JST liquidity conditions for trading or arbitrage bots
- —Integrating JST liquidity metrics into portfolio dashboards
Fit
Best for
- —Agents or bots needing on-demand JST liquidity data without API key management
- —Developers building DeFi dashboards who want pay-per-call pricing
- —Automated trading systems that need low-friction access to token liquidity info
Not for
- —Users needing comprehensive multi-token liquidity data in a single call
- —Anyone requiring detailed API documentation or guaranteed SLAs before integrating
- —Free-tier or high-volume consumers where $0.02/request adds up quickly
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/JST/liquidity \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>"Endpoint
Quality
The endpoint is live with a valid x402 402 challenge and clear pricing ($0.02/request in USDC on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and no description of what the liquidity data actually contains. The docs pages are all empty wallet-connect stubs. This is effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or schema describing request parameters or response fields
- —The specific /defi/JST/liquidity endpoint is not listed on the homepage's available APIs section, raising questions about its official status
- —Response data structure is completely unknown — cannot verify what liquidity data is returned
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/defi/JST/liquidity
- —Platform advertises $0.02 per request flat pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/defi/JST/liquidity