DeFi liquidity data for STX via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides DeFi liquidity data for the STX (Stacks) token. It is part of a broader API platform offering data & analytics, AI/ML inference, finance/Web3, and infrastructure endpoints, all gated behind the x402 payment protocol on the Base network.
The endpoint accepts POST requests and returns JSON. Payment is settled in USDC on Base (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) at a cost of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each call is paid individually via the X-PAYMENT header. The x402 challenge was captured live and confirms the endpoint is operational.
Documentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what fields the liquidity response contains or what parameters the POST body accepts. The endpoint path suggests it returns liquidity-related DeFi data for the STX token, but the exact schema and data source are unknown.
Capabilities
Use cases
- —Querying real-time DeFi liquidity metrics for the STX token
- —Monitoring STX liquidity pools across DeFi protocols
- —Building dashboards or bots that track STX liquidity conditions
- —Integrating STX liquidity data into trading or portfolio management agents
Fit
Best for
- —Agents or apps needing on-demand STX DeFi liquidity data without API key management
- —Developers who want pay-per-call pricing with no subscription
- —x402-compatible AI agents operating on the Base network
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Bulk historical liquidity data retrieval (no evidence of batch or historical endpoints)
- —Non-crypto use cases unrelated to DeFi liquidity
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/STX/liquidity \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and all documentation pages returned only a wallet-connect stub. The exact request parameters and response format are unknown.
Warnings
- —No API documentation available — docs, pricing, and README pages all render only a 'Connect wallet' prompt
- —No OpenAPI or JSON schema for request or response bodies
- —Exact data source and fields returned for STX liquidity are unknown
- —The broader platform lists many endpoints but none have documented schemas
Citations
- —Endpoint returns 402 with x402 challenge advertising USDC payment on Base network at 20000 base unitshttps://lowpaymentfee.com/api/v1/defi/STX/liquidity
- —Platform advertises $0.02 per request, no API keys, no rate limits, Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/defi/STX/liquidity