# Mango v4 Orderbook Feed

**Canonical:** https://apis.io/apis/mango-markets/orderbook-feed/  
**Provider:** Mango Markets — https://apis.io/providers/mango-markets/  
**Base URL:** wss://orderbook.mngo.cloud  
**Documentation:** https://github.com/blockworks-foundation/mango-feeds/tree/lou/l3-feed/service-mango-orderbook

Mango v4 Orderbook Feed is one of 2 APIs that [Mango Markets](https://apis.io/providers/mango-markets/) publishes on the [APIs.io](https://apis.io/) network, described by an AsyncAPI event-driven specification. Tagged areas include WebSocket, Order Book, L2, L3, and Market Data. The published artifact set on APIs.io includes API documentation and an AsyncAPI specification.

Low-latency WebSocket feed (service-mango-orderbook) that parses Mango V4 Perp and Openbook spot bookside accounts and emits L2 (price / quantity) and L3 (per-order) checkpoints and per-side delta updates. Clients subscribe with subscriptionType=level for L2 or subscriptionType=book for L3; the server returns an initial checkpoint followed by streaming per-side updates with slot and writeVersion for ordering.

## Machine-readable artifacts (5)

- **Documentation** — https://github.com/blockworks-foundation/mango-feeds/blob/lou/l3-feed/service-mango-orderbook/README.md
- **AsyncAPI** — https://raw.githubusercontent.com/api-evangelist/mango-markets/refs/heads/main/asyncapi/mango-markets-feeds-asyncapi.yml
- **SourceCode** — https://github.com/blockworks-foundation/mango-feeds/tree/lou/l3-feed/service-mango-orderbook
- **SDKs** — https://github.com/blockworks-foundation/mango-feeds/tree/main/ts/client
- **PublicAPI** — https://api.mngo.cloud/orderbook/v1/

## Other Mango Markets APIs (1)

- [Mango v4 Fills Feed](https://apis.io/apis/mango-markets/fills-feed/)

## Tags

WebSocket, Order Book, L2, L3, Market Data, Perpetuals, Spot, Solana

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/mango-markets/orderbook-feed/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/mango-markets/.