Check BCH wallet balances via x402 micropayment — $0.02 per request on Base.
What it does
This endpoint at lowpaymentfee.com returns Bitcoin Cash (BCH) wallet balance data, gated behind the x402 payment protocol. Each call costs $0.02 (20,000 base units of USDC on the Base network, where USDC has 6 decimals). No API keys or rate limits are required; callers simply attach an X-PAYMENT header with a valid x402 payment proof to access the resource.
The provider operates a broader suite of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing and x402 payment model settled in USDC on Base.
Documentation is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawled material. The specific input parameters (e.g., whether a BCH address is passed in the POST body or as a path parameter) and the response format are unknown. The endpoint is confirmed live, returning a proper 402 challenge on unauthenticated POST requests.
Capabilities
Use cases
- —Checking BCH wallet balances programmatically without API key registration
- —Integrating BCH balance lookups into agent workflows that support x402 payments
- —Building dashboards or bots that monitor Bitcoin Cash addresses
Fit
Best for
- —Agents or apps that already support x402 payment protocol
- —Quick one-off BCH balance checks without account setup
- —Developers wanting pay-per-use crypto data with no rate limits
Not for
- —High-volume BCH balance monitoring where $0.02/call adds up quickly
- —Users needing detailed BCH transaction history or UTXO data (not evidenced)
- —Anyone requiring comprehensive API documentation before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wallet/BCH/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_proof>" \
-d '{"address": "bitcoincash:qr..."}'Example
Request
{
"address": "bitcoincash:qr5cyxhumamhpnmrqfhaqgevmknfuq2csczjpmnmz"
}Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation, no request/response schema, and no examples. The request and response formats are entirely inferred. This is effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, and API pages all show only 'Connect wallet'
- —No OpenAPI or JSON schema for request or response — input parameters are unknown
- —Request body format in the example is entirely guessed; actual required fields are undocumented
- —The broader provider lists many endpoints but none have documented schemas
Citations
- —Endpoint returns HTTP 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/wallet/BCH/balance
- —maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) which equals $0.02https://lowpaymentfee.com/api/v1/wallet/BCH/balance
- —Provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —Docs, pricing, and API pages render only a 'Connect wallet' prompt with no technical documentationhttps://lowpaymentfee.com/docs