# Notional V3 Subgraph API (Mainnet)

**Canonical:** https://apis.io/apis/notional/notional-v3-subgraph-api-mainnet/  
**Provider:** Notional Finance — https://apis.io/providers/notional/  
**Base URL:** https://api.studio.thegraph.com/query/60626/notional-v3-mainnet/v0.0.9  
**Documentation:** https://docs.notional.finance/v3-technical-docs/subgraph-guides/notional-v3-subgraphs

Notional V3 Subgraph API (Mainnet) is one of 4 APIs that [Notional Finance](https://apis.io/providers/notional/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include GraphQL, Subgraph, Ethereum, V3, and Leveraged Vaults. The published artifact set on APIs.io includes API documentation.

GraphQL subgraph API for querying Notional V3 on-chain data on Ethereum Mainnet via The Graph Studio. Supports queries for accounts, leveraged vault positions, fCash markets, interest rates, and yield analytics for the V3 protocol upgrade. Publicly accessible with no authentication required.

## Machine-readable artifacts (3)

- **Documentation** — https://docs.notional.finance/v3-technical-docs/subgraph-guides/notional-v3-subgraphs
- **GraphQL** — https://api.studio.thegraph.com/query/60626/notional-v3-mainnet/v0.0.9
- **Explorer** — https://thegraph.com/explorer/subgraphs/2t4T7bts8ZQCpGcVq9VSzDyPVCQc5Y7TFwZKfmXKeSVx?view=Query&chain=arbitrum-one

## Other Notional Finance APIs (3)

- [Notional V2 Subgraph API (Mainnet)](https://apis.io/apis/notional/notional-v2-subgraph-api-mainnet/)
- [Notional V3 Subgraph API (Arbitrum)](https://apis.io/apis/notional/notional-v3-subgraph-api-arbitrum/)
- [Notional Typescript SDK](https://apis.io/apis/notional/notional-typescript-sdk/)

## Tags

GraphQL, Subgraph, Ethereum, V3, Leveraged Vaults, fCash, Fixed Rate

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/notional/notional-v3-subgraph-api-mainnet/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/notional/.