x402basequality 0.35

Query RSR token wallet balance via x402 micropayment on Base for $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/wallet/RSR/balance

What it does

This endpoint at lowpaymentfee.com returns the wallet balance for the RSR (Reserve Rights) token. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network.

The specific endpoint `/api/v1/wallet/RSR/balance` accepts POST requests and costs $0.02 per call (20,000 base units of USDC with 6 decimals). No API keys or accounts are required — payment is handled inline via the x402 `X-PAYMENT` header. The platform advertises no rate limits and instant access.

Documentation on the site is extremely thin. The docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what parameters the endpoint expects (e.g., a wallet address) or what fields the response contains. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes integration speculative.

Capabilities

wallet-balance-queryrsr-tokenx402-paymentusdc-settlementbase-networkpay-per-requestno-api-key

Use cases

  • —Checking RSR token balance for a given wallet address
  • —Monitoring RSR holdings programmatically in a portfolio tracker
  • —Integrating RSR balance lookups into a trading bot or DeFi dashboard

Fit

Best for

  • —Developers needing on-demand RSR balance checks without API key management
  • —Agents or bots that can pay per call via x402 on Base
  • —Low-volume or sporadic wallet balance queries where subscription pricing is wasteful

Not for

  • —High-frequency balance polling where $0.02/request adds up quickly
  • —Users who need balances for many tokens in a single call (this endpoint is RSR-specific)
  • —Anyone requiring detailed documentation or guaranteed SLAs before integrating

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wallet/RSR/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>" \
  -d '{"address": "0xYourWalletAddress"}'

Example

Request

{
  "address": "0x1234567890abcdef1234567890abcdef12345678"
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wallet/RSR/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing. However, documentation is essentially nonexistent — docs/pricing/API pages all show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and the request body format is entirely inferred. The example request is speculative.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all render only 'Connect wallet'
  • —No OpenAPI or schema definition; request parameters and response format are unknown
  • —Example request body (address field) is inferred and not confirmed by any source material
  • —The broader platform lists many endpoints but none have documented schemas

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:33:19Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/PMs2Ba