MMC earnings data via x402 micropayment on Base network, $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides MMC (likely a ticker symbol) earnings data through the x402 payment protocol. It is part of a broader Finance & Web3 API suite offered by the provider, which also includes price feeds, exchange rates, token quotes, and gas estimates. The endpoint accepts POST requests and returns JSON.
Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required per request is 20,000 base units, which equals $0.02 USD (USDC uses 6 decimals). There are no API keys, no rate limits, and no minimum commitments — access is instant once the x402 payment header is provided. The x402 challenge version is 1 with a maximum timeout of 300 seconds.
Documentation is extremely sparse. The provider's docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed description of what the MMC earnings endpoint actually returns. The endpoint path suggests it retrieves earnings information for a financial instrument identified as "MMC," but the exact data shape and fields are unknown. The endpoint is confirmed live via a valid 402 challenge response.
Capabilities
Use cases
- —Retrieving MMC earnings data for financial analysis
- —Programmatic access to earnings information without API key management
- —Agent-driven financial data retrieval with per-request micropayments
Fit
Best for
- —Agents needing on-demand earnings data with no subscription
- —Developers wanting keyless, pay-per-use financial data access
- —Crypto-native applications settling payments on Base L2
Not for
- —Users needing bulk historical earnings data (no evidence of batch support)
- —Anyone requiring detailed API documentation or guaranteed SLAs
- —Non-crypto users who cannot settle USDC payments on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/finance/MMC/earnings \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, no documentation beyond a wallet-connect prompt, and the exact meaning of 'MMC/earnings' is unspecified. This is effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, and README pages only show 'Connect wallet'
- —No OpenAPI or request/response schema provided
- —The meaning of 'MMC' in the endpoint path is unclear — could be a stock ticker or other identifier
- —No examples of expected request body or response format
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/finance/MMC/earnings
- —The provider advertises $0.02 per request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/finance/MMC/earnings
- —The Finance & Web3 category includes price feeds, exchange rates, token quotes, and gas estimateshttps://lowpaymentfee.com