Portfolio holdings data via x402 micropayment on Base network, $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns portfolio holdings data for portfolio ID 93. 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 gated behind the x402 payment protocol on the Base network.
The endpoint accepts POST requests and returns JSON. Payment is settled in USDC (USD Coin) on Base at a cost of $0.02 per request (maxAmountRequired of 20,000 base units with 6 decimals). No API keys, rate limits, or upfront commitments are required — callers simply attach an x402 payment header to each request. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a maximum timeout of 300 seconds.
The specific data returned by this holdings endpoint is not documented in detail. The platform's landing page lists this endpoint under a generic "Premium API Access" label, and the crawled docs, pricing, and API pages all resolve to a minimal "Connect wallet" prompt with no further documentation. Because of this, the exact request body schema and response structure are unknown. The endpoint is confirmed live (returns a valid 402 challenge), but prospective callers should be aware that documentation is essentially absent.
Capabilities
Use cases
- —Retrieving holdings data for a specific portfolio via automated agents
- —Integrating portfolio position data into dashboards or analytics pipelines
- —Programmatic access to holdings without API key management
Fit
Best for
- —Agents that need on-demand portfolio holdings data with no signup
- —Developers experimenting with x402 micropayment-gated APIs
- —Workflows requiring low-cost, pay-per-call financial data
Not for
- —Users who need detailed API documentation or schema guarantees before integrating
- —Bulk data retrieval where per-request pricing would be cost-prohibitive
- —Production systems requiring SLA or uptime guarantees
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/portfolios/93/holdings \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge, but there is no documentation of request/response schemas, no OpenAPI spec, and the crawled pages beyond the landing page are empty wallet-connect stubs. The specific purpose of portfolio 93 holdings is undocumented.
Warnings
- —No API documentation available — docs, pricing, API, and README pages all resolve to a minimal 'Connect wallet' prompt with no content.
- —Request body schema and response schema are completely unknown; no examples provided by the provider.
- —The meaning of 'portfolio 93' is unexplained — it is unclear whether this is a public demo portfolio or user-specific data.
- —No SLA, uptime, or support information available.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 in USDC on Base networkhttps://lowpaymentfee.com/api/v1/portfolios/93/holdings
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/portfolios/93/holdings