DeFi liquidity data for FIL via x402 micropayment on Base, $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides DeFi liquidity data for Filecoin (FIL) via the x402 payment protocol. It is part of a broader suite of pay-per-call APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints on the platform share a uniform pricing model of $0.02 per request, settled in USDC on the Base network with no API keys, rate limits, or upfront commitments required.
The specific endpoint `/api/v1/defi/FIL/liquidity` accepts POST requests and returns JSON. The x402 challenge confirms it is live, advertising a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 exact scheme to the provider's wallet. The timeout for payment settlement is 300 seconds.
Documentation is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawled material. The endpoint name suggests it returns liquidity pool or liquidity metric data for FIL in a DeFi context, but the exact response format and accepted request parameters are unknown.
Capabilities
Use cases
- —Querying current DeFi liquidity metrics for Filecoin (FIL)
- —Integrating FIL liquidity data into trading bots or dashboards
- —Agent-driven DeFi research requiring per-call payment without API keys
Fit
Best for
- —AI agents needing on-demand FIL DeFi liquidity data without signup
- —Developers prototyping DeFi dashboards who want instant access
- —Low-volume consumers who prefer pay-per-call over subscriptions
Not for
- —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
- —Users needing detailed API documentation or guaranteed response schemas before integration
- —Consumers who need liquidity data for tokens other than FIL from this specific endpoint
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/FIL/liquidity \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The endpoint's actual behavior and output format are entirely unknown, making this effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, and API pages all render only 'Connect wallet'
- —No OpenAPI or JSON schema for request or response bodies
- —This specific endpoint (/api/v1/defi/FIL/liquidity) is not listed on the provider's homepage; it may be undocumented or experimental
- —Response format and accepted request parameters are completely unknown
Citations
- —The endpoint returns HTTP 402 with x402 challenge advertising 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/defi/FIL/liquidity
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/defi/FIL/liquidity
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com