Opyn

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.

Opyn publishes 3 APIs on the APIs.io network. Tagged areas include DeFi, Options, Ethereum, Squeeth, and Power Perpetual.

Opyn’s developer surface includes documentation and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub

27.9/100 thin ▬ flat Agent 18/100 agent aware Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0

AccessFreeOpen⚡ Free to try

3 APIs

DeFi Options EthereumSqueethPower PerpetualDerivatives Cryptocurrency Web3 Smart Contracts SubgraphCrab StrategyVault

Kin Score

Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0

Composite quality — 27.9/100 · thin

Contract Quality 8.3 / 21

Developer Ergonomics 2.4 / 17

Access Clarity 4.9 / 17

Operational Transparency 3.8 / 11

Contract Governance 0.0 / 10

Discoverability 6.3 / 9

Regulatory Posture 3.0 / 15

Agent readiness — 18/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/opyn: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

GraphQL 1

GraphQL schemas published by this provider.

Rate Limits 1

Documented rate limits and quota policies.

Opyn Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

BugBounty

BugBounty

Operate 2

Status, limits, changes, and where to get help

Discord

Discord

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

Squeeth App

Website

Twitter

Twitter

Other 6

Properties that don't map to a standard resource type

Medium

Medium

Audits

Audits

Controller (Mainnet)

SmartContracts

WPowerPerp / oSQTH (Mainnet)

SmartContracts

CrabStrategyV2 (Mainnet)

SmartContracts

Opyn Squeeth Subgraph (The Graph)

GraphExplorer

Source (apis.yml)

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.
accessModel:
  pricing: free
  onboarding: open
  trial: false
  try_now: true
  public: true
  label: Free · Open access
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/opyn.png
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: '0.23'
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
  - Vault
  - Funding Rate
  - Crab Strategy
  - Liquidations
  tags_raw:
  - 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
  - Vault
  - Settlement
  tags_raw:
  - 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: DomainSecurity
  url: security/opyn-domain-security.yml
- 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

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Opyn

Kin Score

APIs 3

Opyn Squeeth Subgraph API

Opyn Gamma Subgraph API

Squeeth Portal Auction API

GraphQL 1

Opyn GraphQL API

Pricing Plans 1

Opyn Plans Pricing

Rate Limits 1

Opyn Rate Limits

FinOps 1

Opyn Finops

Security Posture 1

Opyn Domain Security

Resources

Documentation 1

Build 1

Access & Security 2

Operate 2

Commercial 2

Company 3

Other 6

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