Get BDX market quotes via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint provides market quote data for BDX (Beldex) via the x402 payment protocol. It is part of a broader API platform at lowpaymentfee.com that offers data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated behind per-request x402 micropayments settled in USDC on the Base network.
The specific endpoint `/api/v1/market/quote/BDX` returns a JSON response with market quote information for the BDX token. Payment is handled inline: callers attach an `X-PAYMENT` header with a valid x402 payment proof. The cost is $0.02 per request (20,000 base units of USDC with 6 decimals). No API keys, rate limits, or upfront commitments are required — access is instant once payment is provided.
Documentation on the site is extremely sparse. The docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI schema, no example request/response payloads, and no description of the response format beyond the MIME type `application/json`. The endpoint is confirmed live (returns a proper 402 challenge on POST), but the lack of documentation means callers must discover the response schema empirically.
Capabilities
Use cases
- —Fetching real-time BDX (Beldex) market quotes for trading bots or dashboards
- —Integrating pay-per-call crypto price data into agent workflows without API key management
- —Building portfolio trackers that pull token quotes on demand
Fit
Best for
- —Agents or bots needing on-demand BDX market quotes without subscription overhead
- —Developers experimenting with x402 micropayment-gated APIs
- —Low-volume crypto data consumers who prefer pay-per-use pricing
Not for
- —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
- —Users needing comprehensive multi-token market data in a single call
- —Anyone requiring detailed API documentation or guaranteed response schemas before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/market/quote/BDX \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_proof>"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no example requests or responses, and the site's docs/pricing/API pages are all blank beyond a wallet connect prompt. The actual response format for BDX quotes is completely undocumented.
Warnings
- —No API documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.
- —No OpenAPI or JSON schema describing request parameters or response format.
- —Response structure for /api/v1/market/quote/BDX must be discovered empirically.
- —The broader platform lists many endpoints (AI, analytics, finance, utils) but none have documented schemas — quality of underlying services is unverifiable.
Citations
- —The endpoint returns a 402 challenge requesting USDC payment on Base network with maxAmountRequired of 20000 base units (=$0.02).https://lowpaymentfee.com/api/v1/market/quote/BDX
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/market/quote/BDX
- —Docs, pricing, API, and README pages render only a 'Connect wallet' prompt with no additional content.https://lowpaymentfee.com/docs