Opyn · GraphQL Specification

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 oToken creation and lifecycle, vault collateral and debt management, option minting/burning, settlement, liquidations, and oracle expiry prices for European cash-settled options. No API key is required for the hosted service endpoint; The Graph gateway requests require an API key.

Documentation Endpoint View on GitHub DeFiOptionsEthereumSqueethPower PerpetualDerivativesCryptocurrencyWeb3Smart ContractsSubgraphCrab StrategyVaultGraphQL

Overview

Opyn GraphQL API is a GraphQL API specification published by Opyn on the APIs.io network.

The GraphQL endpoint is available at https://api.thegraph.com/subgraphs/name/opynfinance/gamma-mainnet. documentation is published at https://github.com/opynfinance/Gamma-Subgraph.

The specification includes 4 reference links.

Tagged areas include DeFi, Options, Ethereum, Squeeth, and Power Perpetual.

Endpoint

https://api.thegraph.com/subgraphs/name/opynfinance/gamma-mainnet

References

Documentation https://github.com/opynfinance/v2-documentation
GettingStarted https://thegraph.com/docs/en/querying/querying-the-graph/
Schema https://github.com/opynfinance/Gamma-Subgraph/blob/master/schema.graphql
Explorer https://thegraph.com/hosted-service/subgraph/opynfinance/gamma-mainnet

Back to Opyn · All GraphQL Specs · GitHub

Work with this as data

Every GraphQL schema here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for graphql

4 MCP tools reach this

find_graphqlBrowse and filter every GraphQL schema in the catalog.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This GraphQL schema

curl "https://apis.io/api/v1/graphql/opyn-graphql"

All graphql

curl "https://apis.io/api/v1/graphql?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.