Quick tour

Five minutes to the shape of Faber: install the CLI, read one function, then open a real package.

1. Install the CLI

Download the current release (1.1.1) for your platform from the install page, verify the archive checksum, and put the extracted faber-v1.1.1-<target-triple>/faber binary on your PATH. Confirm:

faber --version

2. Shape of a function

Type-first parameters, glyph return type, Latin control words, nullable union:

functio divide(numerus a, numerus b) → numerus ∪ nihil {
    si b ≡ 0 ∴ redde nihil
    redde a / b
}

Signal	Meaning
`functio`	Function declaration
`numerus a`	Type first, then name
`→`	Return type
`∪ nihil`	Nullable (`T ∪ nihil`)
`si … ∴`	Compact branch
`redde`	Return

3. Package layout

A package is a directory with faber.toml and src/:

my-app/
  faber.toml
  src/
    main.fab

Typical commands:

faber check my-app/
faber build my-app/ -t rust
faber run my-app/
faber test my-app/

Details: Faber build tool.

4. Real applications

Do not stop at hello-world. The public examples repo has multi-command CLIs, a local mailspace, GPU workload tracks, and a full language corpus.

Package	What it shows
AI Workbench	Multi-command CLI, model inspect, embeddings
ViviLite	File-backed mailspace / agent coordination CLI
coreutils	Larger application campaign (parity harnesses)
gpu-workload	Systems / GPU rungs
corpus	One directory per language construct

Browse them on the examples page.

5. If you are an agent

1. Read /llms.txt. 2. Open /agents/index.md. 3. Pick a skill from /.well-known/agent-skills/index.json.

Topic	Link
Install & download	Install
Syntax reference	Syntax
Features (locales, lanes)	Features
Ecosystem libraries	Ecosystem
Keyword corpus	Corpus