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Modules & imports

Importing stdlib packages

cleat

import "std/io"
import "std/json"
import "std/http"

Use imported functions with the package name as qualifier:

cleat

io.println("hello")
let encoded = json.encode(my_struct)
let resp: http.Response = http.get("https://api.example.com")?

Package	Description
`std/io`	Console output (`print`, `println`)
`std/strings`	19 string manipulation functions
`std/json`	JSON encode, decode, pretty-print, validate
`std/math`	Numeric utilities (abs, min, max, sqrt, pow, ...)
`std/http`	HTTP client (GET, POST, custom requests)
`std/fs`	File system operations
`std/env`	Environment variable access
`std/log`	Leveled logging to stderr
`std/os`	Process args, exit, getwd, hostname
`std/crypto`	SHA-256 hashing, hex encoding
`std/time`	Wall-clock access, deterministic test clocks
`std/llm`	LLM prompt, stream, structured output
`std/server`	HTTP server types and response helpers
`std/supervisor`	Supervised agent execution with retry/timeout/tracing
`std/memory`	Persistent key-value store with namespaces

See the Standard Library Reference for complete API documentation.

Cleat projects use cleat.toml for configuration:

toml

[project]
name = "my-app"
version = "0.1.0"
entry = "main.cleat"

[build]
output = "my-app"

Build commands:

cleat build — reads cleat.toml, compiles entry, outputs binary named output
cleat build file.cleat — compiles a single file (ignores manifest)
cleat build directory/ — compiles all .cleat files in the directory as a package