Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific path `/api/v1/accounts/107` is one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.
The endpoint is live and returns a valid x402 challenge. Payment is settled on the Base network using USDC (contract 0x8335…2913) with an exact-payment scheme. The max amount required is 20,000 base units, which at 6 decimals equals $0.02 USD per call. No API keys or rate limits are advertised; access is instant once payment is included in the X-PAYMENT header. The endpoint accepts POST requests and returns application/json.
However, the specific functionality behind `/api/v1/accounts/107` is not documented on the provider's site — it does not appear in the listed API catalog. The crawled docs, pricing, and README pages all returned only a "Connect wallet" stub with no additional documentation. Without an OpenAPI spec, request/response schemas, or detailed docs, the actual behavior of this particular endpoint remains unclear. It may be an account-specific data retrieval endpoint, but this is speculative.
Capabilities
Use cases
- —Accessing premium data or services with per-request USDC micropayments
- —Agent-driven API consumption without pre-registration or API keys
- —Programmatic account data retrieval (speculative for this specific path)
Fit
Best for
- —Developers wanting zero-signup, pay-as-you-go API access
- —AI agents that can settle x402 payments on Base
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users needing detailed API documentation or OpenAPI specs before integrating
- —Anyone without a Base-compatible USDC wallet
- —High-volume use cases where per-request pricing may add up
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/107 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, the specific path /api/v1/accounts/107 is not documented anywhere on the provider's site, there is no OpenAPI spec, no request/response schema, and all doc pages return only a wallet-connect stub. The actual functionality is unknown.
Warnings
- —The endpoint /api/v1/accounts/107 does not appear in the provider's listed API catalog — its specific functionality is undocumented.
- —All documentation pages (docs, pricing, README, api) returned only a 'Connect wallet' stub with no usable content.
- —No OpenAPI spec, request schema, or response schema is available — integration requires trial and error.
- —The provider site lists many endpoints but provides no detailed documentation for any of them.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units on Base network using USDChttps://lowpaymentfee.com/api/v1/accounts/107
- —The provider advertises $0.02 per 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/accounts/107
- —Documentation, pricing, README, and API pages all returned only a 'Connect wallet' stubhttps://lowpaymentfee.com/docs