# Ostium Labs

**Canonical:** https://apis.io/providers/ostium-labs/  
**Website:** https://www.ostium.com  
**APIs profiled:** 1

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.

## Kin Score — 50.4 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 50.4).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 49.4 |
| Governance | 3.1 |
| Operational Transparency | 31.6 |
| Developer Ergonomics | 69.0 |
| Commercial Clarity | 52.6 |

Regulatory layer — **Securities & Market Data**: 60.0 (matched via tags).

## Agent readiness — 34.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| MCP Server | derived |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | derived |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (1)

- **Ostium Builder API** — 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 WebSoc...

## MCP servers (1)

- **ostium-labs-mcp.yml**

## Security (4)

- **Ostium Labs Authentication** — wallet-signature/delegated-key/public-read · 3 schemes
- **Ostium Labs Domain Security** — TLSv1.3 · HSTS · DMARC
- **Ostium Labs Vulnerability Disclosure** — contact published
- **Ostium Labs Trust Center** — trust center published

## Tags

Company, Perpetual Futures, Decentralized Finance, DeFi, Trading, Real World Assets, Derivatives, Arbitrum, Blockchain, Web3, Market Data, SDK

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/ostium-labs/). Scores are computed from the provider's own public artifacts under a published rubric.