---
title: "Latest daily stock quote for a US-listed ticker."
method: GET
path: "/api/stocks/quote"
tags: ["stocks"]
---

# Latest daily stock quote for a US-listed ticker.

`GET /api/stocks/quote`

## Request

- Base URL: `https://2s.io`
- URL: `https://2s.io/api/stocks/quote`
- Auth: API key in header `PAYMENT-SIGNATURE`

Latest daily stock quote for a US-listed ticker. Returns the most recent completed trading session: open, high, low, close, volume, VWAP, and trade count, plus the change and percent change versus the prior session, and company reference data (name, primary exchange, security type, currency, market cap). NOTE: this plan tier serves end-of-day / delayed data (the response flags delayed=true), suitable for daily snapshots, fundamentals context, and post-close analysis rather than real-time trading. Pass ticker as a US symbol (e.g. AAPL, MSFT, BRK.B). Market data by Massive (formerly Polygon.io). Billing: payment settles before this endpoint runs (paid upstream), so an error after settlement IS charged — the error response then carries the payment receipt (PAYMENT-RESPONSE) and `X-2s-Charged: true`.

## Query parameters

- `ticker` string, required
- `trial` 1

## Other responses

- `200` (unresolved $ref)
- `400`: Invalid request. Parameter validation (BAD_REQUEST / INVALID_PARAM with error.details.issues, MALFORMED_JSON) runs before payment and is never charged; a request-specific 400 raised by the endpoint itself runs after settlement on this paid-upstream operation and IS charged (`X-2s-Charged: true` + PAYMENT-RESPONSE receipt).
- `402`: Payment required. Body is the x402 PaymentRequirements envelope with a multi-network accepts array; the per-call price is in accepts[].amount (and on the operation as x-2s-price). Sign for whichever rail you hold USDC on (EIP-3009 for Base, partial SPL transfer for Solana) and retry with the PAYMENT-SIGNATURE header (X-PAYMENT also accepted for v1 clients). Also PAYMENT_SETTLE_FAILED (error envelope) when a verified payment failed to settle: error.details.chargeStatus is "not_charged" (retry with a fresh payment) or "unknown" (the authorization may still settle before its deadline — check it before retrying).
- `404`: Not found — NOT_FOUND (or NO_SOURCES / NO_OPINIONS): the requested entity does not exist. On a paid-upstream operation (see its description) this can follow settlement: then the call WAS charged and the response carries `X-2s-Charged: true` plus the PAYMENT-RESPONSE receipt.
- `429`: Too many requests — RATE_LIMITED: our per-IP / per-payer limiter. Not charged; retry after Retry-After.
- `5XX`: Server-side failure. 500 INTERNAL: unexpected error; quote error.errorId (also the X-2s-Error-Id header). 502 UPSTREAM_UNAVAILABLE (or another UPSTREAM_* code): the data provider failed — composite endpoints refuse unbilled when every source fails. 503 SERVICE_PAUSED: endpoint paused by the operator kill switch, retry after Retry-After; 503 SPEND_CAP: daily upstream budget exhausted. 504 UPSTREAM_TIMEOUT. On a paid-upstream operation (see its description) this can follow settlement: then the call WAS charged and the response carries `X-2s-Charged: true` plus the PAYMENT-RESPONSE receipt. SERVICE_PAUSED and SPEND_CAP are never charged.

---

[API](https://skmtc.dev/2s-io/apis/2s-the-most-everything-api.md) · [All operations](https://skmtc.dev/2s-io/apis/2s-the-most-everything-api/llms.txt) · [OpenAPI document](https://skmtc.dev/2s-io/apis/2s-the-most-everything-api/revisions/da4c5caf686e?raw)