Switchboard Documentation
  • Switchboard On Demand
  • Understanding Switchboard
    • Introduction
      • Why Switchboard Oracles?
      • Vision & mission
      • Brief History and Key Achievements to Date
      • Switchboard’s Architecture, Tech Stack and Security
        • Trusted Execution Environments (TEEs)
        • Oracle Queues
        • Node Architecture
  • Product Documentation
    • Data Feeds
      • Getting Started with Switchboard Data Feeds
      • Solana / SVM
        • Part 1: Designing and Simulating Your Feed
          • Option 1: Drag-and-Drop Feed Builder
          • Option 2: Designing a Feed in Typescript
        • Part 2: Deploying your Feed On-Chain
        • Part 3: Integrating your Feed
          • Integrating your Feed On-Chain
          • Integrating into Frontends
        • Costs
        • Integrating on Eclipse
      • EVM
        • Part 1: Prerequisites and Quick Start Guide
        • Part 2: Designing and Creating Your Feed
          • Option 1: Drag-and-Drop Feed Builder
          • Option 2: Designing a Feed in Typescript
        • Part 3: Integrating your Feed
          • Integrating your Feed On-Chain
          • Integrating your Feed with Typescript
          • Integrating into Frontends (EVM)
      • Aptos
      • Sui
      • Movement
      • Starknet
      • Optional Features
        • Switchboard Secrets
      • Task Types
    • Aggregator
      • How to use the Switchboard Oracle Aggregator
    • Randomness
      • Why Randomness is important?
      • Switchboard's Approach to Verifiable Randomness
      • Tutorials
        • Solana / SVM
        • EVM
  • Tooling and Resources
    • Crossbar
      • Run Crossbar with Docker Compose
    • Switchboard Command Line Interface
    • Technical Resources and Documentation
      • SDKs and Documentation
      • Solana Accounts
      • EVM Identifiers
      • Code Examples (Github)
  • Switchboard Protocol
    • (Re)staking
      • What is (re)staking?
      • What are Node Consensus Networks (NCNs)?
      • What are Vault Receipt Tokens (VRTs)?
      • The Node Partner Program
      • The Switchboard NCN
    • Running a Switchboard Oracle
      • Prerequisites
        • Knowledge about Linux, containers and Self-Hosting
        • Hardware Requirements and AMD SEV SNP
        • Software Requirements
        • Network Requirements
      • Hardware: tested providers and setup
        • OVH
      • Platform: Kubernetes + AMD SEV SNP
        • Bare Metal with Kubernetes (K3s)
      • The Git Repo: Clone Our Code
        • Repo Structure
      • Configuration: Tweaking Configurations
        • cfg/00-common-vars.cfg
        • cfg/00-devnet-vars.cfg and cfg/00-mainnet-vars.cfg
      • Installation: Setup Via Scripts
        • Bare Metal with Kubernetes (K3s) + AMD SEV SNP
  • Frequently Asked Questions and Glossary
    • FAQ
    • Glossary
Powered by GitBook
On this page
  • Crossbar: Switchboard's Utility Server
  • Key Features
  • Blockchain-Specific Features
  1. Tooling and Resources

Crossbar

PreviousEVMNextRun Crossbar with Docker Compose

Last updated 3 months ago

Crossbar: Switchboard's Utility Server

Crossbar is a utility server designed to simplify interactions with the Switchboard network. It provides essential functionalities for simulating and resolving feeds across various blockchains. Crossbar comes with a set of useful utility functions for resolving feeds on all chains with active Switchboard deployments, IPFS utilities for storing and fetching jobs, and a simulator for constantly fetching feed updates for liquidators and other bots.

Running your own instance of Crossbar is highly recommended for user interfaces and bots that require frequent price simulations.

Refer to for instructions on setting up your own Crossbar instance.

Key Features

Crossbar aims to streamline the Switchboard experience, offering the following core functionalities:

  • Fetch Feeds by Feed Hash: Retrieve a feed's job definitions and queue in JSON format using its unique feed hash (content identifier).

  • Store Jobs: Store feed definitions using your configured IPFS node (requires Piñata credentials or a Kubo node).

  • Simulate Feeds by Feed Hash: Simulate multiple feeds simultaneously using their feed hashes, enabling off-chain tracking of custom price feeds for bot automation.

Blockchain-Specific Features

Crossbar provides tailored features for specific blockchains:

Solana, Aptos/Sui, and Eclipse:

  • Fetch Encoded Update Instructions: Retrieve update instructions from live oracles for Solana feeds (available on devnet and mainnet).

  • Fetch Simulated Results for Feeds: Fetch current prices for feeds. This is a useful feature for tracking custom price feeds off-chain, for triggering an action that the bots can use.

Ethereum Virtual Machine (EVM):

  • Fetch Encoded Updates: Obtain an encoded update for a feed to submit on-chain via a contract explorer (like Etherscan), eliminating the need to include feed definitions directly in your frontend.

  • Settle Randomness: Fetch a settlement message for resolving randomness requests when using Switchboard's EVM Randomness features.

Public Instance of Crossbar

While a public instance is available for quick testing, running your own Crossbar instance is highly recommended. Switchboard oracles are heavily rate-limited by IP address, so using a dedicated instance prevents disruptions.

Examples:

Public Instance:

Job Definition Fetch:

EVM Oracle Fetch (Core Testnet):

Run Crossbar with Docker Compose
https://crossbar.switchboard.xyz
https://crossbar.switchboard.xyz/fetch/2718f49aa8fb6b71452ef149fa654a06d3996113034c27e2dca5c71b4a2866e7
https://crossbar.switchboard.xyz/updates/evm/1115/4f0e020e3d6f65cf21adb7766d065f787293154964be259dddb56e848ff838a0