Clear Street
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.
Clear Street publishes 22 APIs on the APIs.io network, including API (Trades and Uploads), Accounts API, API version API, and 19 more. Tagged areas include Company, Financial-Services, Capital Markets, Prime Brokerage, and Trading.
The Clear Street catalog on APIs.io includes 1 event-driven AsyncAPI specification.
Clear Street’s developer surface includes documentation, API reference, getting-started guide, signup flow, support, engineering blog, CLI, and 31 more developer resources.
Kin Score
APIs 23
Individual APIs this provider publishes, each with its own machine-readable definition.
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.
Scroll for all 23
Open Collections 22
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONClear Street Accounts API
OPEN COLLECTIONClear Street Trading API version API
OPEN COLLECTIONClear Street Trading Calendar API
OPEN COLLECTIONCommon API Models Entities API
OPEN COLLECTIONCommon API Models Holdings API
OPEN COLLECTIONClear Street Trading Instrument Data API
OPEN COLLECTIONClear Street Instruments API
OPEN COLLECTIONCommon API Models Inventories API
OPEN COLLECTIONCommon API Models Locates API
OPEN COLLECTIONCommon API Models Margin API
OPEN COLLECTIONCommon API Models Margin Simulations API
OPEN COLLECTIONClear Street Trading Omni AI API
OPEN COLLECTIONClear Street Orders API
OPEN COLLECTIONCommon API Models Performance API
OPEN COLLECTIONCommon API Models PNL API
OPEN COLLECTIONClear Street Positions API
OPEN COLLECTIONCommon API Models Rates API
OPEN COLLECTIONClear Street Trading Screener API
OPEN COLLECTIONClear Street Trades API
OPEN COLLECTIONClear Street Uploads API
OPEN COLLECTIONClear Street Trading Watchlist API
OPEN COLLECTIONScroll for all 22
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Clear Street MCP
MCP SERVEREvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Clear Street Studio Events
ASYNCAPISecurity Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 5
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll for all 7
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 7
Authentication, authorization, and security posture
Scroll for all 7
Operate 3
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Source (apis.yml)
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MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
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