x402basequality 0.35

Retrieve portfolio holdings data 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/portfolios/66/holdings

What it does

This endpoint at lowpaymentfee.com returns holdings data for portfolio ID 66. It is part of a broader platform offering various data, AI, finance, and utility APIs, all gated behind x402 micropayments settled in USDC on the Base network. Each request costs $0.02 (20,000 base units of USDC with 6 decimals).

The endpoint accepts POST requests and returns JSON. The x402 challenge is live and well-formed, advertising exact-scheme payment to a specified wallet address with a 300-second timeout. No API keys or rate limits are required — access is granted purely through per-call payment.

Documentation is extremely sparse. The /docs, /pricing, /api, and /README pages all resolve to a "Connect wallet" stub with no meaningful content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what the holdings response actually contains. The endpoint path suggests it returns financial portfolio holdings, but the exact fields and structure are unknown.

Capabilities

x402-paymentusdc-baseportfolio-holdingsper-request-micropaymentjson-api

Use cases

  • —Fetching current holdings for a specific investment portfolio
  • —Integrating portfolio data into dashboards or analytics tools
  • —Agent-driven portfolio monitoring with per-call payment

Fit

Best for

  • —Developers needing on-demand portfolio holdings without API key management
  • —AI agents that can settle x402 payments on Base
  • —Low-volume or sporadic access to portfolio data where per-call pricing is preferable

Not for

  • —High-frequency polling where $0.02/request adds up quickly
  • —Users who need detailed API documentation or schema guarantees before integrating
  • —Accessing portfolios other than ID 66 (only this specific portfolio path is confirmed)

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/portfolios/66/holdings \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/portfolios/66/holdings
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The x402 challenge is live 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 landing page listing, and no examples. The specific endpoint (portfolios/66/holdings) is not even mentioned on the site's landing page, making its purpose inferrable only from the URL path. Effectively a stub listing.

Warnings

  • —No API documentation available — /docs, /pricing, /api, and /README all return only a 'Connect wallet' stub
  • —No request or response schema provided; the structure of holdings data is unknown
  • —This specific endpoint (portfolios/66/holdings) is not listed on the provider's landing page — it may be a demo or test portfolio
  • —The platform lists many endpoints but none appear to have public documentation

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 08:52:15Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/AjjMXS
Retrieve portfolio holdings data via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart