# Ostium Builder API

**Canonical:** https://apis.io/apis/ostium-labs/ostium-builder-api/  
**Provider:** Ostium Labs — https://apis.io/providers/ostium-labs/  
**Base URL:** https://builder.ostium.io  
**Documentation:** https://docs.ostium.com/developer/sdk/overview

Ostium Builder API is published by [Ostium Labs](https://apis.io/providers/ostium-labs/) on the [APIs.io](https://apis.io/) network, described by an AsyncAPI event-driven specification. Tagged areas include Trading, Market Data, Streaming, Perpetual Futures, and DeFi. The published artifact set on APIs.io includes API documentation, an API reference, a getting-started guide, authentication docs, a changelog, and an AsyncAPI specification.

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.

## Machine-readable artifacts (14)

- **Documentation** — https://docs.ostium.com/developer/sdk/overview
- **APIReference** — https://docs.ostium.com/developer/builder-api/overview
- **GettingStarted** — https://docs.ostium.com/developer/traders/approvals-and-first-trade
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/authentication/ostium-labs-authentication.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/errors/ostium-labs-error-codes.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/conventions/ostium-labs-conventions.yml
- **Lifecycle** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/lifecycle/ostium-labs-lifecycle.yml
- **ChangeLog** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/changelog/ostium-labs-changelog.yml
- **Sandbox** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/sandbox/ostium-labs-sandbox.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/data-model/ostium-labs-data-model.yml
- **Conformance** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/conformance/ostium-labs-conformance.yml
- **AsyncAPI** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/asyncapi/ostium-labs-prices-asyncapi.yml
- **X-MCPServerCandidate** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/mcp/ostium-labs-mcp.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/ostium-labs/refs/heads/main/apis.yml

## Tags

Trading, Market Data, Streaming, Perpetual Futures, DeFi

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/ostium-labs/ostium-builder-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/ostium-labs/.