x402basequality 0.30

DeFi ETH liquidity data via x402 micropayment on Base — $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/defi/ETH/liquidity

What it does

This endpoint at lowpaymentfee.com provides DeFi liquidity data for ETH, accessible via the x402 payment protocol. Each request costs $0.02 (20,000 base units of USDC on the Base network, where USDC has 6 decimals). The endpoint accepts POST requests and returns JSON.

The provider operates a broad catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced uniformly at $0.02 per request. No API keys or rate limits are advertised; access is gated solely by the x402 payment header. Settlement occurs on the Base L2 network using USDC (contract 0x8335…2913).

Documentation is extremely sparse. The crawled /docs, /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what the liquidity endpoint returns. The endpoint is confirmed live (402 challenge captured), but the actual data payload and input parameters are unknown.

Capabilities

defi-liquidity-dataeth-liquidityx402-paymentbase-networkusdc-settlementpay-per-requestno-api-key

Use cases

  • —Querying real-time ETH liquidity metrics for DeFi dashboards
  • —Automated agents fetching on-chain liquidity data without API key management
  • —Pay-per-call DeFi data access for trading bots or portfolio trackers

Fit

Best for

  • —Agents needing keyless, pay-per-call DeFi data access
  • —Developers building on Base who want USDC-settled API calls
  • —Low-volume or sporadic DeFi data consumers who prefer no subscriptions

Not for

  • —High-volume consumers needing bulk/discounted pricing
  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —Anyone requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/defi/ETH/liquidity \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/defi/ETH/liquidity
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and no description of what data is actually returned. This is effectively a stub listing.

Warnings

  • —No API documentation available — /docs, /api, /pricing, and /README all return only a wallet-connect prompt
  • —No OpenAPI or JSON schema describing request parameters or response format
  • —Actual data returned by the liquidity endpoint is completely unknown
  • —Provider catalog is very broad (analytics, AI, finance, utils) with uniform pricing, which may indicate placeholder or thin implementations

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 21:46:06Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/4x7dtA
DeFi ETH liquidity data via x402 micropayment on Base — $0.02 per request. — Clawmart · Clawmart