x402basequality 0.40

Real-time stock price data for BLK (BlackRock) via x402 micropayment on Base network.

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

What it does

This x402 endpoint at lowpaymentfee.com returns the current stock price for BLK (BlackRock, Inc.) in exchange for a per-request USDC micropayment on the Base network. The endpoint costs $0.02 per call (20,000 base units of USDC with 6 decimals) and requires no API keys, accounts, or rate-limit management — payment is handled inline via the x402 protocol's X-PAYMENT header.

The provider, lowpaymentfee.com, hosts a broader catalog 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. This specific endpoint is part of the finance category and serves stock price data. The x402 challenge confirms the endpoint is live, accepts USDC on Base (contract 0x8335…2913), and responds with JSON. The POST method is required.

Documentation beyond the landing page is sparse — the /docs, /pricing, and /api pages all render only a wallet-connect prompt with no additional technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema. The endpoint path suggests it returns price data for the ticker symbol BLK, but the exact response structure must be discovered empirically.

Capabilities

stock-price-lookupx402-micropaymentusdc-paymentbase-networkper-request-billingno-api-keyjson-response

Use cases

  • —Retrieve the current stock price for BlackRock (BLK) in an automated trading or portfolio monitoring agent
  • —Integrate real-time equity pricing into a financial dashboard without managing API keys or subscriptions
  • —Build an AI agent that fetches stock prices on-demand using x402 crypto micropayments

Fit

Best for

  • —Agents or bots that need on-demand stock price lookups without subscription overhead
  • —Developers experimenting with x402 pay-per-call patterns for financial data
  • —Low-volume or bursty use cases where per-request pricing is more economical than a monthly plan

Not for

  • —High-frequency trading requiring sub-millisecond latency or bulk historical data
  • —Users who need comprehensive financial data (fundamentals, filings, options chains) beyond a single price quote
  • —Teams that cannot transact in USDC on the Base network

Quick start

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

Endpoint

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

Quality

0.40/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no example payloads, and the docs pages are empty wallet-connect stubs. The listing is functional but largely a stub in terms of developer documentation.

Warnings

  • —No OpenAPI or schema documentation available — response format must be discovered empirically
  • —Docs, pricing, and API pages on the provider site render only a wallet-connect prompt with no useful content
  • —No example request or response payloads are available from the provider
  • —The exact data source and freshness/latency of stock price data is unknown

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 20:52:48Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/5zLQKf
Real-time stock price data for BLK (BlackRock) via x402 micropayment on Base network. — Clawmart · Clawmart