# Endless APIs

The Endless Blockchain network can be accessed by several APIs, depending on your use-case.

1. Endless **Fullnode-embedded REST API.**

   This API - embedded into Fullnodes - provides a simple, low latency, yet low-level way of *reading* state and *submitting* transactions to the Endless Blockchain. It also supports transaction simulation.
2. Endless **Indexer-powered Restful API.**

   This API provides a high-level, opinionated Restful API to *read* state from the Endless Blockchain. If your app needs to interact with high level constructs, such as Tokens, NFTs, Endless Objects or custom Move contracts, you likely want to incorporate the Endless Indexer API in some fashion.
3. Endless **GRPC Transaction Stream API**

   This API provides a way to stream historical and current transaction data in real-time to an indexing processor. This API is used by the Endless Core Indexing infrastructure itself but also can be used to build app-specific custom indexing processors that process blockchain data in real-time.