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 3 APIs on the APIs.io network: Trading API, Studio API, and API (Trades and Uploads). 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.
A unified RESTful API for client interactions with the Clear Street Active trading platform: accounts and balances, order submission/replacement/cancellation, executions, positi...
The Clear Street Studio prime-brokerage API — an integrated Risk Management, Portfolio Management and Execution Management surface. Covers entities and accounts, holdings, order...
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'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...
aid: clear-street
name: Clear Street
description: '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.'
image: https://clear-street.github.io/docs/assets/logo.png
url: https://raw.githubusercontent.com/api-evangelist/clear-street/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-02'
modified: '2026-08-02'
tags:
- Company
- Financial Services
- Capital Markets
- Prime Brokerage
- Trading
- Brokerage
- Clearing
- Market Data
- Fintech
- Investing
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
- FN: APIs.json
email: info@apis.io
apis:
- aid: clear-street:trading-api
name: Clear Street Trading API
description: 'A unified RESTful API for client interactions with the Clear Street Active trading platform: accounts and
balances, order submission/replacement/cancellation, executions, positions and position instructions, instrument reference
and fundamentals, market data snapshots and daily summaries, news, calendars, screeners, watchlists, and the Omni AI financial
copilot (threads, messages, responses, entitlements). Bearer JWT auth; cursor pagination; a data/error/metadata response
envelope carrying request_id.'
humanURL: https://docs.clearstreet.com/
baseURL: https://api.clearstreet.com
tags:
- Trading
- Orders
- Positions
- Market Data
- Instruments
- Accounts
properties:
- type: OpenAPI
url: openapi/clear-street-trading-api-openapi.yml
- type: Documentation
url: https://docs.clearstreet.com/
- type: APIReference
url: https://docs.clearstreet.com/api/
- type: GettingStarted
url: https://docs.clearstreet.com/
- type: ChangeLog
url: https://docs.clearstreet.com/changelog/
- type: LLMsTxt
url: llms/clear-street-llms.txt
- type: Overlay
url: overlays/clear-street-trading-api-overlay.yaml
- aid: clear-street:studio-api
name: Clear Street Studio API
description: The Clear Street Studio prime-brokerage API — an integrated Risk Management, Portfolio Management and Execution
Management surface. Covers entities and accounts, holdings, orders and bulk orders, trades, positions, locate orders and
easy-borrows, inventories, instruments, P&L summaries and details, and Reg-T / portfolio margin plus margin simulations.
OAuth2 client-credentials bearer tokens; RFC 9457 problem details for errors; a companion WebSocket activity stream.
humanURL: https://docs.clearstreet.io/studio/docs/getting-started
baseURL: https://api.clearstreet.io/studio/v2
tags:
- Prime Brokerage
- Locates
- Margin
- Holdings
- Orders
- Securities Lending
properties:
- type: OpenAPI
url: openapi/clear-street-studio-openapi.yml
- type: Documentation
url: https://docs.clearstreet.io/studio/docs/getting-started
- type: APIReference
url: https://docs.clearstreet.io/studio/reference/
- type: Webhooks
url: asyncapi/clear-street-studio-events.yml
- type: Overlay
url: overlays/clear-street-studio-overlay.yaml
- aid: clear-street:mcp
name: Clear Street MCP Server
description: 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 anonymous request returns a WWW-Authenticate challenge pointing
at /.well-known/oauth-protected-resource/v1/mcp, whose authorization server is https://api.clearstreet.com/oauth/mcp (authorization_code
+ PKCE S256).
humanURL: https://www.clearstreet.com/api
baseURL: https://api.clearstreet.com/v1/mcp
tags:
- MCP
- AI Agents
- Trading
properties:
- type: MCPServer
url: mcp/clear-street-mcp.yml
- type: ToolCrosswalk
url: mcp/clear-street-tool-crosswalk.yml
- aid: clear-street:legacy-api
name: Clear Street API (Trades and Uploads)
description: 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 GitHub repository alongside the FIX 4.2 trade specification,
the OMS guide, and SFTP file-transfer documentation.
humanURL: https://clear-street.github.io/docs/
baseURL: https://api.clearstreet.io/v1
tags:
- Post Trade
- Trades
- Clearing
properties:
- type: Swagger
url: openapi/clear-street-legacy-api-swagger.yml
- type: Documentation
url: https://clear-street.github.io/docs/
- type: Overlay
url: overlays/clear-street-legacy-api-overlay.yaml
common:
- type: AgenticAccess
url: agentic-access/clear-street-agentic-access.yml
- type: Website
url: https://www.clearstreet.io/
- type: DeveloperPortal
url: https://www.clearstreet.com/api
- type: Documentation
url: https://docs.clearstreet.com/
- type: APIReference
url: https://docs.clearstreet.com/api/
- type: GettingStarted
url: https://docs.clearstreet.com/
- type: SignUp
url: https://app.clearstreet.com/
- type: Login
url: https://auth.clearstreet.io/login
- type: PrivacyPolicy
url: https://www.clearstreet.io/legal/privacy-notice
- type: TermsOfService
url: https://www.clearstreet.io/legal/regulatory-disclosures
- type: Support
url: https://www.clearstreet.io/contact
- type: Blog
url: https://www.clearstreet.io/news/blog
- type: GitHubOrganization
url: https://github.com/clear-street
- type: LLMsTxt
url: llms/clear-street-llms.txt
- type: Packages
url: packages/clear-street-packages.yml
- type: SDKs
url: packages/clear-street-packages.yml
- type: CLI
url: cli/clear-street-cli.yml
- type: AgentSkill
url: skills/_index.yml
- type: MCPServer
url: mcp/clear-street-mcp.yml
- type: ToolCrosswalk
url: mcp/clear-street-tool-crosswalk.yml
- type: WellKnown
url: well-known/clear-street-well-known.yml
- type: Authentication
url: authentication/clear-street-authentication.yml
- type: OAuthScopes
url: scopes/clear-street-scopes.yml
- type: Conventions
url: conventions/clear-street-conventions.yml
- type: Idempotency
url: conventions/clear-street-conventions.yml
- type: ErrorCatalog
url: errors/clear-street-problem-types.yml
- type: Lifecycle
url: lifecycle/clear-street-lifecycle.yml
- type: Deprecation
url: https://docs.clearstreet.com/changelog/
- type: ChangeLog
url: changelog/clear-street-changelog.yml
- type: Conformance
url: conformance/clear-street-conformance.yml
- type: Compliance
url: https://www.clearstreet.io/legal/clear-street-trust-center
- type: TrustCenter
url: security/clear-street-trust-center.yml
- type: Security
url: https://www.clearstreet.io/legal/security
- type: VulnerabilityDisclosure
url: security/clear-street-vulnerability-disclosure.yml
- type: DomainSecurity
url: security/clear-street-domain-security.yml
- type: Sandbox
url: sandbox/clear-street-sandbox.yml
- type: Webhooks
url: asyncapi/clear-street-studio-events.yml
- type: DataModel
url: data-model/clear-street-data-model.yml
x-enrichment:
date: '2026-08-02'
status: enriched
artifacts_added: 36
pass: local-v1
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Corrections, re-scores, and removal are free — no partnership or purchase required, and
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