x402basequality 0.30

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/59/holdings

What it does

This endpoint at lowpaymentfee.com returns holdings data for portfolio ID 59. It is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all priced at $0.02 per request and settled via x402 micropayments in USDC on the Base network.

The specific endpoint `/api/v1/portfolios/59/holdings` accepts POST requests and is gated by an x402 payment challenge. The maximum amount required is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a timeout of 300 seconds. No API keys or rate limits are advertised; access is instant once payment is included in the X-PAYMENT header.

Documentation is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what fields the holdings response contains. The endpoint is confirmed live (returns 402 with a valid x402 challenge), but the actual data returned after payment is unknown from available sources.

Capabilities

x402-micropaymentusdc-paymentbase-networkportfolio-holdingspay-per-requestno-api-key

Use cases

  • —Fetching holdings data for a specific portfolio on demand
  • —Integrating portfolio position data into trading or analytics dashboards
  • —Agent-driven portfolio monitoring with per-call micropayments

Fit

Best for

  • —Agents or apps needing on-demand portfolio holdings without subscription commitments
  • —Developers experimenting with x402 payment-gated APIs on Base
  • —Low-volume consumers who prefer pay-per-request over monthly plans

Not for

  • —Users needing detailed API documentation or response schemas before integrating
  • —High-frequency bulk data consumers who need sub-cent pricing or batch endpoints
  • —Anyone requiring portfolio data for arbitrary portfolio IDs (this endpoint is hardcoded to portfolio 59)

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/portfolios/59/holdings \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/portfolios/59/holdings
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing, but there is zero documentation on request parameters, response schema, or what 'portfolio 59 holdings' actually contains. No OpenAPI spec, no examples, and all doc pages are empty wallet-connect stubs.

Warnings

  • —No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no technical content.
  • —No request body schema or response schema is documented; the actual data returned is unknown.
  • —Endpoint is specific to portfolio ID 59; it is unclear whether other portfolio IDs are available or what this portfolio represents.
  • —The platform lists many endpoints on its homepage but this specific portfolios endpoint is not among them, raising questions about its provenance.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 08:53:01Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

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