x402basequality 0.35

Query COMP token wallet balances 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/COMP/balance

What it does

This endpoint at lowpaymentfee.com returns COMP (Compound) token wallet balance data, paid per-request via the x402 protocol on the Base network. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per call. Payment is settled on-chain with no API keys, no rate limits, and no upfront commitments required.

The endpoint is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all priced at $0.02 per request. The specific endpoint `/api/v1/wallet/COMP/balance` sits in the Finance & Web3 category and is accessed via HTTP POST with an `X-PAYMENT` header carrying the x402 payment proof.

Documentation on the site 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 schema, no request/response examples, and no description of required input parameters or output format beyond the generic "Premium API Access" label and `application/json` MIME type declared in the x402 challenge.

Capabilities

crypto-wallet-balancecomp-tokenx402-micropaymentbase-networkusdc-settlementpay-per-requestno-api-key

Use cases

  • —Checking COMP token balances for a given wallet address
  • —Building portfolio dashboards that need real-time token holdings
  • —Automated agents verifying COMP holdings before executing DeFi strategies
  • —Monitoring wallet balances for alerting or compliance purposes

Fit

Best for

  • —Agents needing on-demand COMP balance lookups without managing API keys
  • —Developers who prefer pay-per-call crypto-settled APIs
  • —Low-volume or bursty usage patterns where subscription pricing is wasteful

Not for

  • —High-frequency balance polling where $0.02/call adds up quickly
  • —Users who need balances for many tokens in a single call (this is COMP-specific)
  • —Anyone requiring detailed documentation or SLA guarantees before integration

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wallet/COMP/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_proof>" \
  -d '{"address": "0xYourWalletAddress"}'

Example

Request

{
  "address": "0x1234567890abcdef1234567890abcdef12345678"
}

Endpoint

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

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no documented request/response format, no examples, and the site's docs/pricing/API pages are all blank beyond a wallet-connect prompt. The request and response formats are entirely inferred.

Warnings

  • —No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no technical content.
  • —No OpenAPI or JSON schema for request or response bodies; input parameters are unknown.
  • —The example_request_json is entirely inferred and may not match the actual expected input.
  • —Provider identity and reliability are unclear; no SLA or terms of service found.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:19:39Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

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