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 is listed with 3 APIs on the APIs.io network. Tagged areas include DeFi, Options, Ethereum, Squeeth, and Power Perpetual.

Opyn’s developer surface includes documentation and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

23.1/100 emerging ▬ flat Agent 15/100 agent aware Front door AI 1/6 silent Heartbeat 0/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

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 2026-11-06 · rubric v0.27.0

Composite quality — 23.1/100 · emerging

Contract Quality 8.6 / 21

Developer Ergonomics 2.4 / 17

Access Clarity 0.9 / 17

Operational Transparency 2.9 / 11

Contract Governance 0.0 / 10

Discoverability 6.1 / 9

Regulatory Posture 1.7 / 15

Agent readiness — 15/100 · 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 7 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

10 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 5.3 — up to +18.9 composite points
Developer Ergonomics scores 14.3 — up to +17.1 composite points
Contract Quality scores 40.3 — up to +14.9 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/opyn/apis.yml: open an issue on github.com/api-evangelist/opyn to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

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

Opyn Squeeth Subgraph API

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 de...

Opyn Gamma Subgraph API

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, set...

Squeeth Portal Auction API

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 param...

GraphQL 1

GraphQL schemas published by this provider.

Opyn GraphQL API

The Opyn Gamma Protocol GraphQL API is powered by The Graph and indexes all on-chain activity for the Opyn v2 (Gamma Protocol) options system on Ethereum mainnet. It exposes oTo...

GRAPHQL

Opyn API pricing

Not yet checked against Opyn's own pricing page. Compiled by API Evangelist on 2026-06-14; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Permissionless / Open Access free	Free
Protocol Fees (In-Kind) usage	—

Plan details, limits and sources →

Rate limits

The Graph Hosted Service (Free): 5 requests per second
The Graph Decentralised Network: 50 requests per second
Ethereum RPC (Free Tier — Infura/Alchemy): 100000 requests per day

Compiled by API Evangelist, not yet checked against Opyn's documentation. All 4 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Opyn Plans Pricing

2 plans

PLANS

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.

Opyn Finops

FINOPS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Opyn Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

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 4

Status, limits, changes, and where to get help

IssueTracker

Releases

Discord

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.
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - opynfinance/gamma-subgraph
    - opynfinance/squeeth-monorepo
    - opynfinance/v2-documentation
  open_source: unknown
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: free
  onboarding: open
  trial: false
  try_now: true
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Free · Open access
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/opyn.png
x-docs-platform: gitbook
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
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:
  - Auctions
  - Crab Strategy
  - Hedging
  - Rebalancing
  - Squeeth
  tags_raw:
  - 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: IssueTracker
  url: https://github.com/opynfinance/squeeth-monorepo/issues
- type: Releases
  url: https://github.com/opynfinance/squeeth-monorepo/releases
- 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

Opyn API — frequently asked questions

Does Opyn have an API?

Yes. APIs.io lists 3 APIs from Opyn, including Opyn Squeeth Subgraph API, Opyn Gamma Subgraph API and Squeeth Portal Auction API.

How much does the Opyn API cost?

APIs.io lists 2 pricing plans for Opyn, with each plan's price, limits and inclusions under Pricing on this page.

Is the Opyn API ready for AI agents?

Opyn has a Kin Score of 23.1 out of 100 (emerging) and an Agent Readiness score of 14.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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