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 site hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities — all priced at $0.02 per request, settled in USDC on the Base network. No API keys, accounts, or rate limits are required; callers simply attach an x402 payment header to each request.
The specific endpoint `/api/v1/wire/109` is listed as "Premium API Access" but its exact functionality is not documented beyond that label. The x402 challenge confirms it is live, accepts POST requests, and charges a maximum of 20,000 base units of USDC (0.02 USD) per call on Base (asset contract 0x8335…2913). The output MIME type is application/json. However, no request body schema, response schema, or detailed documentation is available — the docs, pricing, and README pages all resolve to a minimal "Connect wallet" prompt with no further content.
Without documentation on what this specific wire/109 endpoint returns or what input it expects, callers will need to experiment or contact the provider. The site's landing page groups its APIs into categories (analytics, AI, finance, utilities), but wire/109 does not appear in any of those listed routes, suggesting it may be a separate or unlisted premium offering.
Capabilities
Use cases
- —Agent-driven API consumption with automatic per-call USDC payments
- —Accessing premium data or services without creating an account or managing API keys
- —Programmatic pay-as-you-go access from smart contracts or wallets on Base
Fit
Best for
- —Developers or agents wanting zero-signup, pay-per-call API access
- —Users already holding USDC on Base who want frictionless micropayments
- —Prototyping integrations without committing to subscription plans
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone without a Base-compatible wallet or USDC holdings
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/109 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and no explanation of what wire/109 actually does. The docs, pricing, and README pages are all empty beyond a wallet-connect prompt. This is effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, and README pages all show only 'Connect wallet' with no content.
- —The specific endpoint /api/v1/wire/109 ('Premium API Access') is not listed among the site's publicly cataloged API routes; its purpose is unknown.
- —No request body schema or response schema is provided; callers must experiment to discover expected inputs and outputs.
- —No OpenAPI spec, ai-plugin manifest, or agents.txt found.
Citations
- —The site lists APIs at $0.02/request with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —The x402 challenge confirms the endpoint is live, accepts POST, charges max 20000 base units of USDC (USD Coin) on Base.https://lowpaymentfee.com/api/v1/wire/109
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/wire/109