Stock Quote API for AI agents

How do you get a quick quote for AAPL?

One curl call requests the AAPL quote; the first no-signature request is the preflight, and when usable provider data is ready the endpoint can return HTTP 402 with fresh x402 terms.

curl -i 'https://squeezeos-api.onrender.com/api/quick/quote/AAPL'

The first no-signature request is the preflight. When usable provider data is ready, the endpoint can return HTTP 402 with fresh x402 terms. The caller decides whether the quote is worth buying.

What is the failure contract for quotes?

Provider availability is checked before accepted paid delivery. If no configured provider can supply a usable quote, the product should return a no-charge alternative rather than fabricate a market price merely to produce a billable response.

How does Quick Quote compare to deeper market evidence?

Quick Quote: smallest useful stock-price read.

Truth Verify: multiple provider readings, spread, variance and proof metadata when stronger corroboration matters.

Provider Trust: evidence about the source/provider rather than the quote itself.

AI Stock Breakout Scanner: candidate discovery across US equities when you need more than one quote — breakout setups, not single-ticker reads.

Market Snapshot: the live OpenAPI also exposes a separate stock snapshot route with quote plus recent OHLCV context for callers that need more than one number.

What is the machine contract for the quote API?

The machine contract exposes the quote route, OpenAPI, and x402 discovery on Base mainnet with USDC, with exact price, receiver, and resource terms coming from the fresh PAYMENT-REQUIRED challenge.

Quote:   https://squeezeos-api.onrender.com/api/quick/quote/{symbol}
OpenAPI: https://squeezeos-api.onrender.com/.well-known/openapi.json
x402:    https://squeezeos-api.onrender.com/.well-known/x402

Current canonical payment network is Base mainnet eip155:8453 with USDC. Exact quote price, receiver and resource terms must come from the fresh target PAYMENT-REQUIRED challenge.

What do users ask about the Stock Quote API?

Users ask whether an SML API key is needed, whether a 402 means the quote was bought, whether it can be used for trading execution, and why to choose it over a free market API.

Do I need an SML API key? No separate SML API key is required for the public x402 quote path.

Does a 402 mean I bought the quote? No. It is a payment challenge. Settlement and accepted delivery are separate states.

Can I use it for trading execution? No. It is read-only market-data access.

Why use this instead of a free market API? Use a free API when it fits. Quick Quote is optimized for accountless, pay-per-use agent workflows where carrying another subscription or API key is undesirable.

What did a live probe measure on 2026-10-15?

ScriptMasterLabs' stock quote route quoted $0.001 for an AAPL quote on 2026-10-15 — and its failure contract is the differentiator: if no configured provider can supply a real quote, the route returns a no-charge alternative instead of fabricating a price.

• GET /api/quick/quote/AAPL → HTTP 402 in 0.66 s; the accepts array quotes 1,000 atomic USDC = $0.001 on Base mainnet (eip155:8453), payTo 0xc29185fa…dc46.
• No SML API key and no monthly subscription are involved in reaching that quote — the 402 challenge is the entire checkout.

Method: unauthenticated GET probes from an external client on 2026-10-15. An HTTP 402 response is the live x402 payment challenge — the price quoted is read from its accepts array; no payment was made and nothing was charged for these probes. Response times are single measurements, not averages.

How does Quick Quote compare with Alpha Vantage?

Alpha Vantage is the incumbent result for "stock quote API for AI agents" (ScriptMasterLabs authority watch, 2026-10-15), and on breadth it wins: fundamentals, technical indicators, forex and crypto series, and a free API-key tier. Choose it for research workloads that need that catalog. Quick Quote is the narrower primitive: one US equity ticker, one provider-backed price and volume reading, $0.001 per accepted quote, no API key to provision, no subscription to carry, and a fail-closed rule — no real quote available means no charge and no invented number. It is built for agent loops that need a price check inside a workflow, not a market-data library.