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Flow REST API, RPC & gRPC (Access API)

With Quicknode, you get access to our global Flow REST API, & gRPC (Access API) network which always routes your API requests to the nearest available location, ensuring low latency and the fastest speeds.
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Flow Overview​

Flow is a Layer 1 blockchain built for consumer applications and digital assets. Flow supports two execution environments:


  • Cadence: Flow's native smart contract language with resource-oriented programming for managing digital assets
  • EVM (Flow EVM): Full EVM equivalence introduced with the Crescendo upgrade in September 2024, allowing Ethereum contracts to run on Flow without code changes

Flow uses FLOW as its native token for transaction fees, staking, and network governance.

Interacting with Flow APIs​

Flow provides three API options for developers:


  • Flow REST API: HTTP-based API for querying blockchain data and submitting transactions
  • Flow gRPC (Access API): High-performance gRPC interface for accessing Flow network data
  • Ethereum JSON-RPC API (Beta): EVM-compatible JSON-RPC endpoints for Ethereum tooling and smart contracts

The EVM compatibility means developers can use standard Ethereum tools like Hardhat, Foundry, Web3.js, and Ethers.js. Cadence developers can interact with EVM contracts, and EVM contracts can access Cadence functionality through the VM Bridge, enabling cross-environment composability.

The Quicknode Flow documentation is continuously evolving as the chain undergoes upgrades and changes, so we highly recommend cross-referencing with the official Flow documentation for the latest updates and features.

Make Flow API Calls​

The quickest way to start building on Flow is to create a Quicknode endpoint and send your first API request.

Quicknode provides managed Flow endpoints, giving you immediate access to Flow Mainnet and Testnet without the overhead of running infrastructure. These endpoints offer:


  • Hoge betrouwbaarheid – een wereldwijd verspreide infrastructuur die is ontworpen om uitvaltijd tot een minimum te beperken
  • Enhanced performance – optimized latency and request handling for production applications
  • Integrated ecosystem – additional functionality through Quicknode add-ons and products like Streams

Ga naar de QuickStart -pagina om je endpoint aan te maken endpoint je eerste verzoek te versturen.

Ondersteunde netwerken​

Quicknode provides access to the following Flow networks:

Mainnet
Type:Productie
Keten-ID:
747
HTTP:
WSS:
Archive:No
Pruning:Root of current spork (epoch)
Testnet
Type:Testnet
Keten-ID:
545
HTTP:
WSS:
Archive:No
Pruning:Root of current spork (epoch)

Complete reference for developers building on Flow with Quicknode:

Snelstart

Get started with Flow quickly. Follow our step-by-step quickstart to set up your endpoint and make your first API request.

Eindpunten van providers

Learn how to configure and manage your Flow endpoints for optimal performance and reliability.

Overzicht van de API

Ontdek de ondersteunde API’s, netwerken, Quicknode en verbeterde API-functies voor het bouwen van krachtige applicaties.

Add-ons

Discover endpoint add-ons that extend your Flow development workflow.

Endpoint

Beveilig uw eindpunten met authenticatie, whitelisting en beproefde beveiligingsmaatregelen.

Foutcodes

Understand common error codes and troubleshooting steps for Flow API requests.

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