Pay-per-call stock quote for AMD via x402 on Base, settled in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides stock data for AMD (Advanced Micro Devices) through a pay-per-request x402 protocol. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) at a cost of $0.02 per call (20,000 base units with 6 decimals). No API keys or rate limits are required — callers simply attach an x402 payment header to each request.
The provider hosts a broader suite of APIs covering data analytics, AI/ML inference (sentiment, summarization, classification, embeddings), finance (price feeds, exchange rates, crypto quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation), all priced uniformly at $0.02 per request. However, this specific listing covers only the `/api/v1/stocks/AMD` endpoint.
Documentation is extremely sparse. The crawled docs, API, pricing, and README pages all rendered 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 endpoint is confirmed live — it returns a proper 402 challenge with x402 version 1 — but the exact request body format and response structure are unknown and must be discovered by the caller.
Capabilities
Use cases
- —Fetching real-time or recent AMD stock data without subscription commitments
- —Agent-driven portfolio monitoring that pays per query in USDC
- —Integrating stock quotes into crypto-native or Web3 applications
Fit
Best for
- —Developers wanting keyless, pay-as-you-go stock data access
- —AI agents that can settle x402 payments on Base
- —Low-volume or sporadic stock data lookups where subscriptions are overkill
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk data
- —Users who need comprehensive multi-ticker coverage from a single documented API
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/AMD \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it exists and accepts payment. However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page, and no example payloads. The actual data returned is entirely unknown, making this effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — request body format and response structure are unknown
- —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no technical content
- —The specific stock data source, freshness, and coverage (real-time vs. delayed) are not disclosed
- —This endpoint covers only AMD; multi-ticker support is unconfirmed
Citations
- —Endpoint returns 402 with x402 version 1 challenge, accepting USDC on Base networkhttps://lowpaymentfee.com/api/v1/stocks/AMD
- —maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02https://lowpaymentfee.com/api/v1/stocks/AMD
- —Provider advertises $0.02/request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Provider hosts additional APIs for analytics, AI/ML, finance, crypto, and utilitieshttps://lowpaymentfee.com