x402basequality 0.35

Pay-per-call stock quote for AMZN via x402 on Base, settled in USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stocks/AMZN

What it does

This endpoint at lowpaymentfee.com provides stock data for Amazon (AMZN) through the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum cost of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals).

The provider operates a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/crypto market data, and utility services — all priced at $0.02 per request. The x402 model means no API keys or accounts are needed; callers attach an X-PAYMENT header with a signed payment to authenticate each request. The challenge advertises a 300-second payment timeout.

Documentation is extremely thin — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no example request/response, and no description of what fields the stock endpoint actually returns. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know the exact response shape or supported parameters.

Capabilities

stock-quotex402-paymentusdc-settlementbase-networkpay-per-callno-api-keyjson-response

Use cases

  • —Fetching real-time or recent AMZN stock data without needing an API key or subscription
  • —Integrating stock quotes into an autonomous agent workflow that can settle payments on Base
  • —Building trading bots or dashboards that pay per request using USDC

Fit

Best for

  • —Agents or apps that already hold USDC on Base and need quick stock lookups
  • —Developers who want zero-signup, pay-as-you-go stock data
  • —Low-volume or sporadic stock data consumers who don't want monthly subscriptions

Not for

  • —High-volume institutional market data consumers who need bulk pricing or SLAs
  • —Users who need comprehensive documentation, guaranteed schemas, or historical data endpoints
  • —Anyone without a Base-compatible wallet or USDC holdings

Quick start

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

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stocks/AMZN
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no OpenAPI schema, no documented request/response format, and all documentation pages render only a wallet-connect prompt. The actual data returned by the stock endpoint is unknown.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content
  • —No OpenAPI or output schema provided; response format for /api/v1/stocks/AMZN is entirely unknown
  • —No example requests or responses available anywhere in crawled material
  • —Provider identity and data sourcing are opaque — unclear where stock data originates

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 20:09:01Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/mHBWLB
Pay-per-call stock quote for AMZN via x402 on Base, settled in USDC at $0.02/request. — Clawmart · Clawmart