# Clear Street **Canonical:** https://apis.io/providers/clear-street/ **Website:** https://www.clearstreet.io/ **APIs profiled:** 23 Clear Street is a New York–based financial technology firm building independent, cloud-native prime brokerage, clearing, and execution infrastructure for institutional and active individual traders. It is a FINRA/SIPC member broker-dealer, a CFTC-registered Futures Commission Merchant, and FCA-authorised in the UK. Clear Street ships three public API surfaces: the Clear Street Trading API (OpenAPI 3.1, api.clearstreet.com) covering accounts, orders, executions, positions, instruments, market data, screeners, watchlists and the Omni AI financial copilot; the Clear Street Studio API (OpenAPI 3.0, prime-brokerage holdings, locates, easy-borrows, P&L, and Reg-T/portfolio margin) with a companion WebSocket activity stream; and an OAuth-protected remote MCP server for AI agents. First-party SDKs ship for Python, TypeScript, Go and Kotlin/Java, alongside a Go CLI (clst) and a published set of open Agent Skills. ## Kin Score — 67.4 / 100 (exemplar) Scored 2026-08-24 under rubric 0.13.0. Trend: flat (-0.5 from 67.9). | Facet | Score | |---|---| | Discoverability | 92.6 | | Contract Quality | 66.7 | | Governance | 30.3 | | Contract Governance | 30.3 | | Operational Transparency | 44.7 | | Developer Ergonomics | 85.7 | | Commercial Clarity | 43.4 | | Access Clarity | 43.4 | Regulatory layer — **Securities & Market Data**: 76.7 (matched via tags). ## Agent readiness — 63.2 (agent-native) | Dimension | Value | |---|---| | Spec Presence | yes | | Agentic Access | derived | | Reversibility Documented | documented | | MCP Server | verified | | Auth Clarity | served | | Idempotency | documented | | Error Semantics | verified | | OpenAPI Examples | partial | | Rate Limit Signal | no | | Event Surface Described | yes | | Agent Skills | yes | | Well Known Catalog | no | | Consent Identity | no | | Agent Card | no | | Dry Run Mode | no | | Delegated Identity | served | | Protected Resource Metadata | verified | | Dynamic Client Registration | yes | | Agentic Commerce | no | ## APIs (23) - **Clear Street MCP Server** — Clear Street's official remote Model Context Protocol server, exposing the Clear Street Trading API to AI assistants such as Claude and Gemini. OAuth-protected per RFC 9728 — an... - **Clear Street API (Trades and Uploads)** — Clear Street's legacy post-trade API for booking and cancelling trades and for submitting bulk trade-file uploads. Published as a Swagger 2.0 document in the clear-street/docs G... - **Clear Street Accounts API** — The Accounts API from Clear Street — 6 operation(s) for accounts. - **Clear Street API version API** — Endpoints for API service metadata. - **Clear Street Calendar API** — Access clocks and financial calendars for market sessions and events. - **Clear Street Entities API** — The Entities API from Clear Street — 2 operation(s) for entities. - **Clear Street Holdings API** — The Holdings API from Clear Street — 1 operation(s) for holdings. - **Clear Street Instrument Data API** — Retrieve instrument analytics, market data, news, and related reference data. - **Clear Street Instruments API** — The Instruments API from Clear Street — 6 operation(s) for instruments. - **Clear Street Inventories API** — The Inventories API from Clear Street — 1 operation(s) for inventories. - **Clear Street Locates API** — The Locates API from Clear Street — 2 operation(s) for locates. - **Clear Street Margin API** — The Margin API from Clear Street — 2 operation(s) for margin. - **Clear Street Margin Simulations API** — The Margin Simulations API from Clear Street — 2 operation(s) for margin simulations. - **Clear Street Omni AI API** — Thread-centric AI assistant for conversational trading. Create threads to start conversations, poll response objects for in-progress output, and read finalized messages from thr... - **Clear Street Orders API** — The Orders API from Clear Street — 6 operation(s) for orders. - **Clear Street Performance API** — The Performance API from Clear Street — 1 operation(s) for performance. - **Clear Street PNL API** — The PNL API from Clear Street — 3 operation(s) for pnl. - **Clear Street Positions API** — The Positions API from Clear Street — 6 operation(s) for positions. - **Clear Street Rates API** — The Rates API from Clear Street — 1 operation(s) for rates. - **Clear Street Screener API** — Search instruments and manage saved screeners. - **Clear Street Trades API** — Trade endpoints are used to insert or cancel trades into a our systems. - **Clear Street Uploads API** — Upload endpoints allow you to upload a `CSV` file that contain trades, in the same format as our [trade-file specification](https://github.com/clear-street/docs/blob/master/t... - **Clear Street Watchlist API** — Create and manage watchlists. ## MCP servers (1) - **Clear Street MCP** ## Agentic access (1) - **Clear Street Agentic Access** — 98 operations · 35 acting ## Security (4) - **Clear Street Authentication** — http/oauth2/openIdConnect · 5 schemes - **Clear Street Domain Security** — TLSv1.3 · HSTS · DMARC - **Clear Street Vulnerability Disclosure** — Hackerone · contact published - **Clear Street Trust Center** — SOC 2 Type II ## Tags Company, Financial-Services, Capital Markets, Prime Brokerage, Trading, Brokerage, Clearing, Market Data, Fintech, Investing --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/clear-street/). Scores are computed from the provider's own public artifacts under a published rubric.