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