Pay-per-call token data API on Base via x402 — $0.02/request in USDC, no API keys required.
What it does
lowpaymentfee.com hosts a collection of pay-per-request APIs gated by the x402 protocol on the Base network. The specific endpoint `/api/v1/tokens/FLR` appears to serve token-related data for FLR (Flare). Payment is settled in USDC (contract 0x8335…2913 on Base) at a cost of $0.02 per request (20,000 base units with 6 decimals). No API keys, accounts, or rate limits are advertised — callers simply attach an x402 payment header to each POST request.
The broader platform offers endpoints across several categories: data & analytics (metrics, reports, insights, data export), AI/ML (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at the same $0.02/request price point.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available from the crawled material. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual response format for a paid request is unknown.
Capabilities
Use cases
- —Fetching real-time or on-demand data for the FLR (Flare) token
- —Agent-driven crypto data retrieval with micropayments
- —Integrating token information into trading bots or dashboards without managing API keys
Fit
Best for
- —AI agents or bots that need keyless, pay-as-you-go token data
- —Developers prototyping crypto data integrations without signup friction
- —Low-volume or sporadic token data lookups where per-call pricing is economical
Not for
- —High-volume production workloads where $0.02/request adds up quickly
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Non-crypto use cases (though the platform advertises other endpoint categories)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/tokens/FLR \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The actual data returned for FLR tokens is entirely unknown.
Warnings
- —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or JSON schema for request or response bodies
- —Actual response payload for /api/v1/tokens/FLR is completely undocumented
- —Platform appears to be a generic multi-category API host; quality and reliability of individual endpoints is unverifiable
Citations
- —Endpoint returns a 402 x402 challenge with maxAmountRequired 20000 in USDC on Basehttps://lowpaymentfee.com/api/v1/tokens/FLR
- —All endpoints priced at $0.02/request with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/tokens/FLR
- —Platform offers endpoints across data & analytics, AI/ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com