x402basequality 0.30

DeFi liquidity data for OP token on Optimism, paid per-call via x402 on Base.

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

What it does

This endpoint at lowpaymentfee.com provides DeFi liquidity data for the OP token, accessible via a POST request and paid per-call using the x402 protocol. Payment is settled in USDC on the Base network at $0.02 per request (20,000 base units of USDC with 6 decimals).

The endpoint is part of a broader suite of APIs offered by lowpaymentfee.com spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced uniformly at $0.02 per request. The platform advertises no API keys, no rate limits, and instant access; payment is handled entirely through the x402 payment header mechanism.

Documentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema, and no example payloads available. The specific fields returned by the liquidity endpoint (e.g., pool addresses, TVL, volume, token pair details) are unknown and must be discovered by making a paid request. The endpoint is confirmed live — it returns a proper 402 challenge with x402 version 1.

Capabilities

defi-liquidity-dataop-tokenx402-paymentusdc-base-networkper-call-pricingno-api-key

Use cases

  • —Querying real-time liquidity metrics for the OP token across DeFi protocols
  • —Building dashboards that display OP liquidity depth and pool information
  • —Automated trading agents that need liquidity data before executing swaps on Optimism
  • —Portfolio analytics tools incorporating OP liquidity conditions

Fit

Best for

  • —Agents or bots that need on-demand OP liquidity data without managing API keys
  • —Developers building DeFi tools who prefer pay-per-call pricing
  • —x402-native applications on the Base network

Not for

  • —Users who need detailed API documentation or response schemas before integrating
  • —High-frequency consumers who need bulk/subscription pricing rather than per-call charges
  • —Non-crypto workflows with no x402 payment capability

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/defi/OP/liquidity \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>"

Endpoint

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

Quality

0.30/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no example payloads. The actual data returned is entirely unknown.

Warnings

  • —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'
  • —No OpenAPI or JSON schema for request or response bodies
  • —Actual response fields for the liquidity endpoint are unknown and must be discovered empirically
  • —No information on what 'liquidity' data specifically covers (TVL, pools, depth, etc.)

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 21:33:23Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/vUWFF2
DeFi liquidity data for OP token on Optimism, paid per-call via x402 on Base. — Clawmart · Clawmart