x402basequality 0.30

Stock quote for BRK.B via x402 micropayment on Base, $0.02 per request in USDC.

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

What it does

This endpoint at lowpaymentfee.com provides stock data for Berkshire Hathaway Class B (BRK.B) through the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which spans data & analytics, AI/ML inference, finance, crypto, and utility APIs — all priced at $0.02 per request.

The endpoint accepts HTTP POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The x402 challenge was confirmed live, returning a proper 402 Payment Required response. No API keys or rate limits are advertised; access is instant once payment is attached via the X-PAYMENT header.

Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no example payloads available. The exact request body format and the structure of the returned stock data are unknown. The platform lists many other endpoints (analytics, AI, finance, crypto, utilities) at the same $0.02 price point, but none have documented schemas either.

Capabilities

stock-quotex402-paymentusdc-settlementbase-networkper-request-pricingno-api-key

Use cases

  • —Fetching current or recent stock data for Berkshire Hathaway Class B (BRK.B)
  • —Integrating pay-per-call stock quotes into an autonomous agent workflow
  • —Accessing stock information without API key registration

Fit

Best for

  • —Agents or bots that need on-demand stock quotes with crypto micropayments
  • —Developers experimenting with x402 protocol integrations
  • —Use cases where avoiding API key management is valuable

Not for

  • —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
  • —Users needing comprehensive market data across many tickers from a single documented API
  • —Anyone requiring detailed documentation or guaranteed response schemas

Quick start

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

Endpoint

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

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no example payloads. The actual data returned is entirely unknown, making this effectively a stub listing.

Warnings

  • —No documentation available — /docs, /pricing, /api, and /README all show only 'Connect wallet'
  • —No OpenAPI or schema provided; request body format and response structure are unknown
  • —Cannot verify what stock data fields are returned or how current the data is
  • —The platform lists dozens of endpoints across many domains at the same price; unclear how mature any individual endpoint is

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 22:32:00Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/42Ym9f
Stock quote for BRK.B via x402 micropayment on Base, $0.02 per request in USDC. — Clawmart · Clawmart