aid: opyn
url: https://raw.githubusercontent.com/api-evangelist/opyn/refs/heads/main/apis.yml
name: Opyn
kind: company
description: Opyn is a DeFi options protocol on Ethereum mainnet best known for Squeeth
  (squared ETH), a Power Perpetual that gives traders continuous exposure to ETH²
  without liquidation risk on long positions. The protocol encompasses the Gamma Protocol
  (v2 options with cash-settled European options), the Crab Strategy (automated ETH²/ETH
  delta-neutral vault), Bull Strategy, and Opyn Markets (concentrated-liquidity perps).
  Developers integrate via The Graph GraphQL subgraph for querying squeeth positions,
  vault data, funding rates, and on-chain event history, combined with direct Ethereum
  smart-contract interaction through the Controller, Oracle, WPowerPerp, and Strategy
  contracts. No centralised REST API key is required; data access is permissionless
  through the subgraph and blockchain.
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
- DeFi
- Options
- Ethereum
- Squeeth
- Power Perpetual
- Derivatives
- Cryptocurrency
- Web3
- Smart Contracts
- Subgraph
- Crab Strategy
- Vault
created: '2026-06-14'
modified: '2026-06-14'
specificationVersion: '0.19'
x-category: Cryptocurrency
x-tier: 2
x-type: company
apis:
- aid: opyn:squeeth-subgraph-api
  name: Opyn Squeeth Subgraph API
  description: GraphQL API powered by The Graph that indexes all on-chain Squeeth
    events on Ethereum mainnet. Enables developers to query oSQTH positions, short
    vaults, vault collateral and debt, funding (mark/index) history, Crab strategy
    deposits and withdrawals, and liquidation events without running an archive node.
    The subgraph ID on The Graph network is Ao1QSKEQzsnNyyGKR1Faurjmkr6oNVTbgdxy6diAw9r.
  humanURL: https://thegraph.com/explorer/subgraphs/Ao1QSKEQzsnNyyGKR1Faurjmkr6oNVTbgdxy6diAw9r?view=Overview&chain=mainnet
  baseURL: https://gateway.thegraph.com/api
  tags:
  - Squeeth
  - Subgraph
  - GraphQL
  - Positions
  - Vaults
  - Funding Rate
  - Crab Strategy
  - Liquidations
  properties:
  - type: Documentation
    url: https://opyn.gitbook.io/squeeth
  - type: GraphQL
    url: https://thegraph.com/explorer/subgraphs/Ao1QSKEQzsnNyyGKR1Faurjmkr6oNVTbgdxy6diAw9r?view=Playground&chain=mainnet
  - type: GitHubRepository
    url: https://github.com/opynfinance/squeeth-monorepo
  - type: CodeExamples
    title: Squeeth Monorepo (Frontend + Contracts)
    url: https://github.com/opynfinance/squeeth-monorepo
- aid: opyn:gamma-subgraph-api
  name: Opyn Gamma Subgraph API
  description: GraphQL API via The Graph that indexes the Gamma Protocol (Opyn v2)
    on Ethereum mainnet. Covers oToken creation, option series, vault collateral,
    minting and burning events, settlement, and operator authorisations for European
    cash-settled options. Useful for querying options series data, vault collateral
    ratios, and historical settlement prices.
  humanURL: https://github.com/opynfinance/Gamma-Subgraph
  baseURL: https://api.thegraph.com/subgraphs/name/opynfinance/gamma-mainnet
  tags:
  - Options
  - Gamma Protocol
  - Subgraph
  - GraphQL
  - oTokens
  - Vaults
  - Settlement
  properties:
  - type: Documentation
    url: https://github.com/opynfinance/v2-documentation
  - type: GraphQL
    url: https://api.thegraph.com/subgraphs/name/opynfinance/gamma-mainnet
  - type: GitHubRepository
    url: https://github.com/opynfinance/Gamma-Subgraph
  - type: GitHubRepository
    title: Opyn v2 Documentation
    url: https://github.com/opynfinance/v2-documentation
  - url: graphql/opyn-schema.graphql
    type: GraphQLSchema
  - url: graphql/opyn-graphql.md
    type: GraphQL
- aid: opyn:squeeth-portal-api
  name: Squeeth Portal Auction API
  description: Web interface and data feed for the Crab Strategy weekly auction mechanism.
    The Squeeth Portal at squeethportal.xyz provides auction status, hedging queue,
    and rebalancing parameters used by Crab v2 and Jumbo Crab vaults. Developers can
    read auction state directly from the CrabStrategyV2 contract (0x3B960E47784150F5a63777201ee2B15253D713e8)
    on Ethereum mainnet.
  humanURL: https://www.squeethportal.xyz/auction
  baseURL: https://www.squeethportal.xyz
  tags:
  - Auction
  - Crab Strategy
  - Hedging
  - Rebalancing
  - Squeeth
  properties:
  - type: Documentation
    url: https://opyn.gitbook.io/squeeth/crab-strategy/introduction
  - type: Interface
    url: https://www.squeethportal.xyz/auction
  - type: GitHubRepository
    url: https://github.com/opynfinance/squeeth-monorepo
common:
- type: Website
  url: https://www.opyn.co
- type: Website
  title: Squeeth App
  url: https://squeeth.opyn.co
- type: Documentation
  url: https://opyn.gitbook.io/squeeth
- type: GitHubOrganization
  url: https://github.com/opynfinance
- type: Twitter
  url: https://x.com/opyn_
- type: Discord
  url: https://discord.gg/2NFdXaE
- type: Medium
  url: https://medium.com/opyn
- type: BugBounty
  url: https://immunefi.com/bounty/opyn/
- type: Audits
  url: https://opyn.gitbook.io/squeeth/resources/audits-and-insurance
- type: SmartContracts
  title: Controller (Mainnet)
  url: https://etherscan.io/address/0x64187ae08781B09368e6253F9E94951243A493D5
- type: SmartContracts
  title: WPowerPerp / oSQTH (Mainnet)
  url: https://etherscan.io/address/0xf1B99e3E573A1a9C5E6B2Ce818b617F0E664E86B
- type: SmartContracts
  title: CrabStrategyV2 (Mainnet)
  url: https://etherscan.io/address/0x3B960E47784150F5a63777201ee2B15253D713e8
- type: GraphExplorer
  title: Opyn Squeeth Subgraph (The Graph)
  url: https://thegraph.com/explorer/subgraphs/Ao1QSKEQzsnNyyGKR1Faurjmkr6oNVTbgdxy6diAw9r
- type: Plans
  url: plans/opyn-plans-pricing.yml
- type: RateLimits
  url: rate-limits/opyn-rate-limits.yml
- type: FinOps
  url: finops/opyn-finops.yml
integrations:
- name: Ethereum
- name: The Graph
- name: Uniswap V3
- name: Immunefi
- name: Sherlock
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com