Fleet

Fleet lets you easily create Ergo transactions with a pure JS library.

• Easy to use
• Lightweight: ~12kB minified + gziped
• Powerful: easily create complex transactions with a fluent API
• 100% code coverage
• Tree-shakeable

For common usage patterns and examples, see the Fleet SDK Recipes.

Fleet handles Ergo wallet keys and transaction construction. If your JavaScript application also needs message encryption or symmetric ciphers around those keys, use a dedicated audited crypto library such as noble-ciphers rather than expecting Fleet to provide general-purpose encryption APIs.

September 2025 dev updates noted a Fleet build-tooling migration from tsup to tsdown, with IIFE browser bundles exported for direct browser use. For production apps, still prefer the package entrypoints documented by Fleet unless you specifically need a no-build browser integration.

July 2025 dev updates said Fleet v0.10.0 added AvlTree serialization support. Later that month, Fleet added ErgoTree construction from ergoc JSON output in fleet#202.

Examples

• Fleet Examples: Repository showcasing various Fleet SDK usage patterns. [TS]
• ergo-fleet-sdk-example: small TypeScript ErgoScript-by-example repository using Fleet SDK patterns.

DeepWiki Documentation

For an alternative and potentially more detailed documentation source generated from the repository, explore the Fleet SDK on DeepWiki