Ostium Labs

aid: ostium-labs
name: Ostium Labs
description: Ostium is a decentralized perpetual-futures exchange that lets traders access global real-world-asset markets
  — stocks, ETFs, commodities, indices, forex and crypto — directly from a self-custodial crypto wallet, with leverage and
  no broker or intermediary. Built on Arbitrum, the protocol pairs an on-chain OLP vault with an off-chain hedge that settle
  daily across three core participants. For developers, Ostium ships an official TypeScript Builder SDK (@ostium/builder-sdk)
  and a Python SDK (ostium-python-sdk) plus a public Builder API for live prices, OHLC candles and WebSocket price/account
  streaming, backed by a GraphQL subgraph. Client modes span read-only, trader-signed, and backend-controlled delegated /
  Safe-based gasless execution, with a testnet on Arbitrum Sepolia.
url: https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- general-catalyst
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
image: https://www.ostium.com/favicon.ico
tags:
- Company
- Perpetual Futures
- Decentralized Finance
- DeFi
- Trading
- Real World Assets
- Derivatives
- Arbitrum
- Blockchain
- Web3
- Market Data
- SDK
apis:
- name: Ostium Builder API
  description: Public Builder API and TypeScript/Python SDK surface for reading Ostium market data (pairs, prices, OHLC candles),
    streaming live prices and account/position updates over WebSocket, and building/submitting trades on the Ostium perpetuals
    protocol via read-only, self-signed, delegated and Safe-based gasless client modes.
  humanURL: https://docs.ostium.com/developer/sdk/overview
  baseURL: https://builder.ostium.io
  tags:
  - Trading
  - Market Data
  - Streaming
  - Perpetual Futures
  - DeFi
  properties:
  - type: Documentation
    url: https://docs.ostium.com/developer/sdk/overview
  - type: APIReference
    url: https://docs.ostium.com/developer/builder-api/overview
  - type: GettingStarted
    url: https://docs.ostium.com/developer/traders/approvals-and-first-trade
  - type: Authentication
    url: authentication/ostium-labs-authentication.yml
  - type: ErrorCatalog
    url: errors/ostium-labs-error-codes.yml
  - type: Conventions
    url: conventions/ostium-labs-conventions.yml
  - type: Lifecycle
    url: lifecycle/ostium-labs-lifecycle.yml
  - type: ChangeLog
    url: changelog/ostium-labs-changelog.yml
  - type: Sandbox
    url: sandbox/ostium-labs-sandbox.yml
  - type: DataModel
    url: data-model/ostium-labs-data-model.yml
  - type: Conformance
    url: conformance/ostium-labs-conformance.yml
  - type: AsyncAPI
    url: asyncapi/ostium-labs-prices-asyncapi.yml
  - type: MCPServer
    url: mcp/ostium-labs-mcp.yml
common:
- type: Website
  url: https://www.ostium.com
- type: DeveloperPortal
  url: https://docs.ostium.com/developer/sdk/overview
- type: Documentation
  url: https://docs.ostium.com
- type: APIReference
  url: https://docs.ostium.com/developer/builder-api/overview
- type: GettingStarted
  url: https://docs.ostium.com/developer/traders/approvals-and-first-trade
- type: Blog
  url: https://www.ostium.com/blog
- type: GitHubOrganization
  url: https://github.com/0xOstium
- type: Support
  url: https://docs.ostium.com/traders/community/support
- type: SignUp
  url: https://app.ostium.com
- type: Pricing
  url: https://docs.ostium.com/traders/reference/fees
- type: TermsOfService
  url: https://docs.ostium.com/legal/terms-of-use
- type: PrivacyPolicy
  url: https://docs.ostium.com/legal/privacy-policy
- type: X
  url: https://x.com/ostium
- type: Discord
  url: https://discord.com/invite/ostiumlabs
- type: ChangeLog
  url: https://docs.ostium.com/developer/sdk/changelog
- type: LLMsTxt
  url: llms/ostium-labs-llms.txt
- type: Packages
  url: packages/ostium-labs-packages.yml
- type: SDKs
  url: packages/ostium-labs-packages.yml
- type: WellKnown
  url: well-known/ostium-labs-well-known.yml
- type: Authentication
  url: authentication/ostium-labs-authentication.yml
- type: Conventions
  url: conventions/ostium-labs-conventions.yml
- type: ErrorCatalog
  url: errors/ostium-labs-error-codes.yml
- type: Lifecycle
  url: lifecycle/ostium-labs-lifecycle.yml
- type: ChangeLog
  url: changelog/ostium-labs-changelog.yml
- type: Sandbox
  url: sandbox/ostium-labs-sandbox.yml
- type: DataModel
  url: data-model/ostium-labs-data-model.yml
- type: Conformance
  url: conformance/ostium-labs-conformance.yml
- type: DomainSecurity
  url: security/ostium-labs-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/ostium-labs-vulnerability-disclosure.yml
- type: Security
  url: https://immunefi.com/bug-bounty/ostium/
- type: TrustCenter
  url: security/ostium-labs-trust-center.yml
- type: AsyncAPI
  url: asyncapi/ostium-labs-prices-asyncapi.yml
- type: MCPServer
  url: mcp/ostium-labs-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 18
  pass: local-v1