HHY Language V1.0.0

Pipe Everything.

A flow-first scripting language for system automation.

Built solo. Designed to flow.

path("./logs")
    |> files("**/*.log")
    |> where { file -> file.size > 1mib }
    |> flat_map { file -> read_lines(file.path) }
    |> where { line -> contains(line, "ERROR") }
    |> take(100)
    |> save_lines(path("errors.txt"))

What is HHY?

HHY unifies files, processes, network requests, and structured data through one pipeline model.

Flow

Think in flows, not loops.

Pipe

Compose steps into pipelines that read from left to right.

System

Native access to files, processes, networks, and system data.

Clear syntax

Deterministic grammar, type rules, and semantics—with no AI dependency.

Native units

Size, time, and percent are first-class, runtime-checked values.

Predictable execution

Immutable collections, bounded concurrency, cancellation, limits, and structured errors.

LEARN

Learn HHY

Follow a focused path from installation to real system scripts.

View the full manual

Quick Start

Install the interpreter and run your first .hhy script.

hhy run hello.hhy

Files and Paths

Walk directories, read text, and save results atomically.

path("./data") |> files("*.json")

Processes and HTTP

Run system commands and call HTTP APIs.

http.get(url) |> timeout(5s) |> send