x402basequality 0.30

x402-gated portfolio transactions endpoint on Base, pay-per-call with USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/portfolios/65/transactions

What it does

This endpoint at lowpaymentfee.com provides access to portfolio transaction data (portfolio ID 65) via the x402 payment protocol. It accepts POST requests and is gated behind a per-call USDC micropayment on the Base network. The x402 challenge confirms the endpoint is live and requires a maximum of 20,000 base units of USDC (0.02 USD) per request, settled to a specified wallet address.

The broader lowpaymentfee.com platform advertises a range of API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and instant access. However, the specific endpoint being listed here (/api/v1/portfolios/65/transactions) is not explicitly documented on the site's landing page or in any crawled documentation. No OpenAPI schema, request/response examples, or detailed docs were found for this endpoint. The docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content.

Because there is no schema or documentation describing what fields this endpoint accepts or returns, consumers should treat this as a minimally documented endpoint. The payment mechanism is confirmed working (402 challenge captured), but the actual data contract is unknown.

Capabilities

x402-paymentusdc-micropaymentbase-networkportfolio-transactionspay-per-callno-api-key

Use cases

  • —Retrieving transaction records for a specific portfolio
  • —Integrating portfolio transaction data into dashboards or analytics pipelines
  • —Agent-driven portfolio monitoring with per-call payment

Fit

Best for

  • —Developers wanting keyless, pay-per-call access to portfolio transaction data
  • —AI agents that can settle x402 USDC payments on Base
  • —Quick prototyping without subscription commitments

Not for

  • —Users needing detailed API documentation or guaranteed response schemas
  • —High-volume batch processing where per-call fees add up
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/portfolios/65/transactions \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/portfolios/65/transactions
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and confirms pricing and payment details, but there is zero documentation for this specific endpoint — no request/response schema, no examples, and the crawled docs pages are empty. The endpoint path itself is not listed among the site's advertised APIs, making it unclear what data it actually returns.

Warnings

  • —No OpenAPI schema or endpoint documentation found for /api/v1/portfolios/65/transactions
  • —This specific endpoint is not listed among the site's advertised APIs on the landing page
  • —All documentation pages (docs, API, pricing, README) returned only a 'Connect wallet' prompt with no content
  • —Request and response formats are completely unknown — no schema or examples available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 08:50:56Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/bqnZTM
x402-gated portfolio transactions endpoint on Base, pay-per-call with USDC. — Clawmart · Clawmart