# Notional Finance GraphQL API

Notional Finance exposes protocol data via GraphQL subgraphs hosted on The Graph protocol. The V2 subgraph covers Ethereum Mainnet fixed-rate lending/borrowing markets, accounts, fCash assets, cash markets, liquidations, and exchange rates. V3 subgraphs (Mainnet and Arbitrum) extend coverage to leveraged vault positions and the V3 protocol upgrade; note that the V3 Studio-hosted endpoints may be deprecated — check the explorer links below for the current deployment.

**Endpoint (V2 Mainnet):** https://api.thegraph.com/subgraphs/name/notional-finance/mainnet-v2
**Endpoint (V3 Mainnet):** https://api.studio.thegraph.com/query/60626/notional-v3-mainnet/v0.0.9
**Endpoint (V3 Arbitrum):** https://api.studio.thegraph.com/query/60626/notional-v3-arbitrum/version/latest

**Documentation:** https://docs.notional.finance/developer-documentation/off-chain/subgraph-reference

**References:**
- V2 Subgraph Reference: https://docs.notional.finance/developer-documentation/off-chain/subgraph-reference
- V3 Subgraph Guide: https://docs.notional.finance/v3-technical-docs/subgraph-guides/notional-v3-subgraphs
- V2 Explorer: https://thegraph.com/hosted-service/subgraph/notional-finance/mainnet-v2
- V3 Mainnet Explorer: https://thegraph.com/explorer/subgraphs/2t4T7bts8ZQCpGcVq9VSzDyPVCQc5Y7TFwZKfmXKeSVx?view=Query&chain=arbitrum-one
- V3 Arbitrum Explorer: https://thegraph.com/explorer/subgraphs/4oVxkMtN4cFepbiYrSKz1u6HWnJym435k5DQRAFt2vHW?view=About&chain=arbitrum-one
- Source Schema (V2): https://github.com/notional-finance/subgraph/blob/master/schema.graphql
- GitHub Organization: https://github.com/notional-finance