x402basequality 0.35

Pay-per-call stock data for SPGI 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/SPGI

What it does

This endpoint at lowpaymentfee.com provides stock data for S&P Global Inc. (ticker: SPGI) through an x402 payment-gated API. Each request costs $0.02, paid in USDC on the Base network. The endpoint uses the x402 "exact" payment scheme, meaning the caller attaches a single micropayment per request with no subscription or API key required.

The endpoint is part of a broader platform (lowpaymentfee.com) that offers 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 specific /api/v1/stocks/SPGI route is not listed on the homepage's catalog but follows the same x402 pattern and pricing tier as the other endpoints.

Documentation is extremely sparse. The crawled /docs, /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no example request/response payloads, and no description of what fields the stock data response contains. The endpoint accepts POST requests and returns application/json, but the exact input parameters and output structure are unknown.

Capabilities

x402-paymentusdc-basestock-dataper-call-micropaymentno-api-keypay-per-use

Use cases

  • —Retrieving current or recent stock data for S&P Global (SPGI) without needing an API key or subscription
  • —Agent-driven portfolio monitoring that pays per data fetch in USDC on Base
  • —Integrating stock lookups into automated trading or research pipelines using x402 micropayments

Fit

Best for

  • —Developers or agents who want keyless, pay-per-call stock data
  • —x402-native workflows that settle payments on Base in USDC
  • —Low-volume or sporadic stock data lookups where subscriptions are overkill

Not for

  • —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
  • —Users who need comprehensive market data across many tickers in bulk (only SPGI path documented here)
  • —Anyone requiring detailed API documentation or guaranteed schema stability

Quick start

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

Endpoint

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

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no examples, and the docs pages are empty. The specific /stocks/SPGI route isn't even listed on the homepage catalog, making it unclear what data it actually returns.

Warnings

  • —No API documentation available — /docs, /pricing, /api, and /README pages all return only a wallet-connect prompt
  • —No OpenAPI or output schema provided; response format is entirely unknown
  • —The /api/v1/stocks/SPGI endpoint is not listed in the homepage catalog — it may be undocumented or experimental
  • —Cannot verify what stock data fields are returned or how current the data is

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 21:38:33Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/Ly6unW
Pay-per-call stock data for SPGI via x402 on Base, settled in USDC at $0.02/request. — Clawmart · Clawmart