CME earnings data via pay-per-request x402 on Base (USDC, $0.02/call).
What it does
This endpoint at lowpaymentfee.com provides CME (Chicago Mercantile Exchange) earnings data through a simple HTTP POST request, paid per-call using the x402 protocol. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required. The payment is settled on-chain via an exact-scheme x402 challenge.
The endpoint is part of a broader suite of finance and Web3 APIs offered by lowpaymentfee.com, which also includes price feeds, exchange rates, token quotes, and gas estimates, all at the same $0.02 per-request price point. The platform advertises instant access with no minimums or commitments.
Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all resolve to a minimal "Connect wallet" prompt with no further technical detail. There is no OpenAPI schema, no example request/response payloads, and no description of what fields the CME earnings endpoint accepts or returns. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual data format and coverage remain unknown.
Capabilities
Use cases
- —Retrieving CME earnings data for financial analysis
- —Integrating CME earnings into automated trading or research pipelines
- —Agent-driven on-demand financial data retrieval without API key management
Fit
Best for
- —Developers needing quick, keyless access to CME earnings data
- —AI agents that can pay per-call via x402/USDC on Base
- —Users who want pay-as-you-go financial data without subscriptions
Not for
- —Users needing comprehensive CME market data with documented schemas and SLAs
- —High-volume consumers who need bulk pricing or rate-limited guarantees
- —Anyone requiring detailed API documentation before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/finance/CME/earnings \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, confirming it accepts payments. However, there is no OpenAPI schema, no documented request/response format, no examples, and all documentation pages are empty stubs. The actual data content and coverage of CME earnings is entirely unknown.
Warnings
- —No API documentation available — /docs, /pricing, /api, and /README pages are all empty stubs
- —No request or response schema provided; input parameters and output format are unknown
- —CME earnings data scope and freshness are unverified
- —Financial data endpoint with no stated data source, accuracy guarantees, or SLA
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units (USDC, 6 decimals = $0.02) on Base networkhttps://lowpaymentfee.com/api/v1/finance/CME/earnings
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/finance/CME/earnings