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/95/holdings

What it does

This endpoint at lowpaymentfee.com returns holdings data for portfolio ID 95 via a POST request, gated by the x402 payment protocol. Each call costs $0.02 in USDC on the Base network (maxAmountRequired of 20,000 base units with 6 decimals = $0.02). No API keys or rate limits are required — access is granted per-request upon payment.

The provider site (lowpaymentfee.com) hosts a broad catalog of x402-gated APIs spanning data & analytics, AI/ML inference, finance/Web3, and infrastructure utilities, all priced at $0.02 per request. This specific endpoint falls under the finance/portfolio category, though the site does not provide detailed documentation for the holdings endpoint's request or response schema. The crawled docs, pricing, API, and README pages all returned only a "Connect wallet" prompt with no further content.

Because there is no OpenAPI spec, no request/response schema documentation, and no example payloads available, the exact fields accepted in the POST body and the structure of the returned holdings data are unknown. Agents should expect a JSON response (mimeType is application/json) but will need to experiment or contact the provider for schema details.

Capabilities

x402-paymentportfolio-holdingsusdc-basemicropaymentjson-apino-api-key

Use cases

  • —Fetching current holdings for a specific investment portfolio
  • —Integrating portfolio data into dashboards or analytics pipelines
  • —Automated portfolio monitoring by AI agents paying per-request

Fit

Best for

  • —Agents needing on-demand portfolio holdings without API key management
  • —Low-volume or sporadic portfolio data lookups at $0.02 per call
  • —x402-native workflows on the Base network

Not for

  • —High-frequency bulk portfolio data retrieval (no documented batch support)
  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —Non-USDC or non-Base payment workflows

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/portfolios/95/holdings \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/portfolios/95/holdings
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, and all documentation pages returned only 'Connect wallet' with no useful content. The purpose of the holdings endpoint is only inferable from the URL path.

Warnings

  • —No request or response schema documented — input/output structure is unknown
  • —All documentation pages (docs, pricing, API, README) returned only 'Connect wallet' with no content
  • —Portfolio ID 95 is hardcoded in the endpoint path; unclear if other portfolio IDs are available or how they are obtained
  • —Provider site lists many API categories but this specific holdings endpoint is not listed on the homepage catalog

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 09:05:13Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/bELn9B
Retrieve portfolio holdings data via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart