Crossbar

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:

PreviousEVM NextRun Crossbar with Docker Compose

Last updated 2 months ago

Crossbar: Switchboard's Utility Server

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

Public Instance:

Examples:

Job Definition Fetch:

EVM Oracle Fetch (Core Testnet):