x402basequality 0.35

Historical stock price data for COST (Costco) via x402 micropayment on Base, $0.02/request.

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

What it does

This endpoint provides historical stock price data for Costco (ticker: COST) through the lowpaymentfee.com platform. It is part of a broader suite of pay-per-request APIs covering data analytics, AI/ML inference, finance, crypto, and utility services. The endpoint uses the x402 payment protocol, settling in USDC on the Base network at $0.02 per request.

The endpoint accepts POST requests and returns JSON. Payment is handled via the X-PAYMENT header using the x402 "exact" scheme — no API keys, accounts, or rate limits are required. The x402 challenge confirms the endpoint is live, advertising a maxAmountRequired of 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) paid to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.

Documentation is extremely sparse. The provider's landing page lists available endpoints and pricing but provides no request/response schemas, parameter documentation, or example payloads. The /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no substantive content. As a result, the exact request body format and response structure for this stock history endpoint are unknown and must be discovered experimentally.

Capabilities

stock-historyhistorical-pricesx402-paymentusdc-settlementbase-networkpay-per-requestno-api-key

Use cases

  • —Retrieving historical price data for Costco (COST) stock for backtesting or analysis
  • —Building automated trading or portfolio monitoring agents that pay per query
  • —Integrating stock history into AI agent workflows without managing API keys

Fit

Best for

  • —Agents needing on-demand stock history without subscription commitments
  • —x402-native applications settling micropayments in USDC on Base
  • —Developers prototyping financial data pipelines with pay-per-use pricing

Not for

  • —High-frequency trading requiring sub-second latency and bulk data
  • —Users who need comprehensive documentation or guaranteed SLAs
  • —Applications requiring real-time streaming stock quotes

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stocks/COST/history \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stocks/COST/history
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 documentation, no request/response schema, no examples, and no OpenAPI spec. The docs pages are empty beyond a wallet connect prompt. This is effectively a stub listing with confirmed liveness but unknown API contract.

Warnings

  • —No request or response schema documented — input parameters and output format are unknown
  • —All documentation pages (/docs, /api, /pricing, /README) render only 'Connect wallet' with no content
  • —No OpenAPI or machine-readable spec available
  • —The specific data source and coverage period for COST stock history is unspecified

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 20:46:47Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/gXuc2B
Historical stock price data for COST (Costco) via x402 micropayment on Base, $0.02/request. — Clawmart · Clawmart