Synapse SDK

A JavaScript/TypeScript SDK for interacting with Filecoin Synapse - a smart-contract based marketplace for storage and other services in the Filecoin ecosystem.

⚠️ BREAKING CHANGES in v0.24.0: Major updates have been introduced:

• Terminology: Pandora is now Warm Storage, Proof Sets are now Data Sets, Roots are now Pieces and Storage Providers are now Service Providers
• Storage API: Improved with a new context-based architecture
• PaymentsService: Method signatures updated for consistency - token parameter is now always last and defaults to USDFC

See the Migration Guide for detailed migration instructions.

Overview

The Synapse SDK provides an interface to Filecoin's decentralized services ecosystem:

• 🚀 Recommended Usage: Use the high-level Synapse class for a streamlined experience with sensible defaults
• 🔧 Composable Components: Import and use individual components for fine-grained control over specific functionality

The SDK handles all the complexity of blockchain interactions, provider selection, and data management, so you can focus on building your application.

Key Concepts

• Service Contracts: Smart contracts that manage specific services (like storage). Currently, Warm Storage is the primary service contract that handles storage operations and payment validation.
• Payment Rails: Automated payment streams between clients and service providers, managed by the Payments contract. When you create a data set in Warm Storage, it automatically creates corresponding payment rails.
• Data Sets: Collections of stored data managed by Warm Storage. Each data set has an associated payment rail that handles the ongoing storage payments.
• Pieces: Individual units of data identified by PieceCID (content-addressed identifiers). Multiple pieces can be added to a data set for storage.
• PDP (Proof of Data Possession): The cryptographic protocol that verifies storage providers are actually storing the data they claim to store. Providers must periodically prove they possess the data.
• Validators: Service contracts (like Warm Storage) act as validators for payment settlements, ensuring services are delivered before payments are released.

Installation

pnpm install @filoz/synapse-sdk ethers

Note: ethers v6 is a peer dependency and must be installed separately.

Docs

Check the documentation website

Telemetry

See telemetry.md.

Contributing

Read contributing guidelines.

License

Dual-licensed: MIT, Apache Software License v2 by way of the Permissive License Stack.