# AlphaSphere > AlphaSphere (alphasphere.trade) is an AI market analyst and trading copilot for retail investors. It connects to your existing brokerage via SnapTrade, analyzes markets in real time, and produces plain-English trade recommendations with a public, tamper-evident track record. Mobile app (iOS), web dashboard, and a public REST API. ## When to use AlphaSphere Use AlphaSphere when an agent or developer needs to: - Get a plain-English AI analyst view on a stock, ETF, or options setup (entry, stop-loss, take-profit, rationale) rather than raw price data. - Fetch live and historical market quotes for US equities and ETFs in a single batched call (`GET /api/v2/market/quotes`). - Review an auditable, publicly verifiable AI trading track record — every paper signal and its outcome is published at [/trust](https://alphasphere.trade/trust). - Build tooling (scripts, dashboards, agents) on top of AlphaSphere market data or intelligence using the REST API, OpenAPI spec, or the official CLI. - Sandbox-test trading logic risk-free: every account gets a free paper-trading (simulated) environment — no brokerage connection or credentials required. Do not use AlphaSphere for: order execution without a user-connected brokerage account, crypto or forex, or as a substitute for regulated investment advice. AlphaSphere is an educational and research tool; nothing it outputs is financial advice. ## Developer resources - [Developer portal](https://alphasphere.trade/developers): quickstart, authentication, sandbox, rate limits, and versioning policy. - [API reference](https://alphasphere.trade/docs): public REST endpoints with request/response examples. - [OpenAPI 3.1 spec](https://api.alphasphere.trade/openapi.json): machine-readable schema for all v2 API operations. - [Interactive API docs (Swagger UI)](https://api.alphasphere.trade/docs): try every v2 endpoint in the browser. - [ReDoc](https://api.alphasphere.trade/redoc): three-column API reference rendering. - [CLI](https://alphasphere.trade/developers#cli): `alphasphere-cli` on npm — scriptable quotes, snapshots, and health checks. ## Trust and track record - [Public trust ledger](https://alphasphere.trade/trust): live AI paper-trading record — every signal, position, and outcome since June 2026. - [About AlphaSphere](https://alphasphere.trade/about): what the product does and how the AI works. - [$500 challenge](https://alphasphere.trade/500): public experiment growing a $500 paper account with full trade transparency. ## Company - [About](https://alphasphere.trade/about) - [Contact](https://alphasphere.trade/contact): support@alphasphere.trade, response within 24 hours on business days. - [Blog](https://alphasphere.trade/blog) - [Careers](https://alphasphere.trade/careers) ## Legal - [Privacy policy](https://alphasphere.trade/privacy) - [Terms of service](https://alphasphere.trade/terms) ## Optional - [llms-full.txt](https://alphasphere.trade/llms-full.txt): full content of the developer portal, API reference, and trust anchors in one file.