x402basequality 0.30

x402-gated portfolio transactions endpoint on Base, paid per-call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/portfolios/62/transactions

What it does

This endpoint at lowpaymentfee.com provides access to portfolio transaction data via a POST request to `/api/v1/portfolios/62/transactions`. It is part of a broader platform (lowpaymentfee.com) that offers a variety of x402-payable API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities.

The specific endpoint probed here is gated by the x402 protocol (version 1) on the Base network. Each call costs up to $0.02 USDC (maxAmountRequired of 20,000 base units with 6 decimals), settled to a designated wallet address. The platform advertises a flat $0.02 per request across all its endpoints, with no API keys, no rate limits, and no minimum commitments required.

Documentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what fields the transactions endpoint accepts or returns. The endpoint is confirmed live (returns a proper 402 challenge), but without documentation it is unclear what request body is expected or what transaction data is returned.

Capabilities

x402-paymentusdc-settlementbase-networkportfolio-transactionspost-endpointper-call-pricing

Use cases

  • —Retrieving portfolio transaction history via a pay-per-call model
  • —Integrating portfolio data into agent workflows without API key management
  • —Programmatic access to transaction records settled in USDC on Base

Fit

Best for

  • —Developers wanting keyless, pay-per-request portfolio data access
  • —AI agents that can settle x402 payments on Base
  • —Users who prefer micropayment-based API access over subscription models

Not for

  • —Users who need detailed API documentation or schema before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone needing non-USDC or non-Base-network payment options

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/portfolios/62/transactions \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/portfolios/62/transactions
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, but there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The purpose of this specific endpoint (portfolios/62/transactions) is unclear and undocumented.

Warnings

  • —No API documentation available — /docs, /api, /pricing, and /README pages are all empty
  • —No OpenAPI or schema definition for request or response bodies
  • —The endpoint path includes a hardcoded portfolio ID (62), suggesting it may be a specific resource rather than a general-purpose API
  • —Purpose and data returned by this endpoint are entirely undocumented

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 08:49:06Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/L7P9GQ
x402-gated portfolio transactions endpoint on Base, paid per-call in USDC. — Clawmart · Clawmart