Check MNT wallet balance via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns wallet balance information for MNT (Mantle) tokens. It is part of a broader platform offering dozens of pay-per-call API endpoints across data analytics, AI/ML inference, finance/Web3, and infrastructure categories — all gated behind the x402 payment protocol on the Base network using USDC.
The specific endpoint `/api/v1/wallet/MNT/balance` accepts POST requests and is priced at a maximum of $0.02 per call (20,000 base units of USDC with 6 decimals). Payment is settled on-chain via the x402 "exact" scheme to a designated wallet address. No API keys, rate limits, or upfront commitments are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
Documentation on the site 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, and no usage examples available from the crawled material. The endpoint is confirmed live (returns a proper 402 challenge), but the actual response format and required request body fields are unknown.
Capabilities
Use cases
- —Querying MNT (Mantle) token wallet balances programmatically
- —Building portfolio trackers that need on-demand balance lookups
- —Integrating wallet balance checks into automated trading or monitoring bots
Fit
Best for
- —Agents needing quick one-off wallet balance queries without API key setup
- —Developers who prefer pay-per-call crypto data access on Base
- —Automated workflows that need MNT balance data with minimal onboarding
Not for
- —High-frequency polling where $0.02/request adds up quickly
- —Users who need detailed transaction history beyond a simple balance
- —Anyone requiring comprehensive multi-chain wallet analytics in a single call
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wallet/MNT/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge, but there is no OpenAPI spec, no request/response schema, no documentation, and no examples. The actual functionality (what request body is expected, what the response looks like) is entirely unknown from the crawled material.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are unknown
- —All documentation pages (docs, API, pricing, README) return only a 'Connect wallet' prompt with no content
- —The endpoint description 'Premium API Access' is generic and does not describe the actual wallet balance functionality
- —Cannot verify what data is actually returned or whether the endpoint functions correctly beyond the 402 challenge
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/wallet/MNT/balance
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is used for paymenthttps://lowpaymentfee.com/api/v1/wallet/MNT/balance