Language Support — 163 grammars

act supports 163 grammars in a single native Rust binary. Each language exposes a different mix of refactor, query, and analysis operations. Click any language for the full per-language operation reference an AI agent can call via MCP.

Language	Query	Refactor	Analysis
ActionScript	15	57	30
Ada	15	56	30
Agda	15	53	30
Angular	15	—	—
Apex	15	72	30
Arduino	15	—	—
Assembly	15	24	30
Astro	15	29	30
AWK	15	—	—
Bash	15	49	30
Bazel	15	—	—
Beancount	15	—	—
BibTeX	15	—	—
Bicep	15	25	30
BigQuery SQL	15	—	—
BitBake	15	—	—
C	15	49	30
Cairo	15	45	30
Cap'n Proto	15	—	—
Circom	15	—	—
Clarity	15	68	30
Clojure	15	51	30
CMake	15	—	—
COBOL	15	46	30
CoffeeScript	15	65	30
Common Lisp	15	61	30
C++	15	69	30
Crystal	15	58	30
C#	15	95	30
CSS	15	72	30
CUDA	15	41	30
CUE	15	—	—
D	15	55	30
Dart	15	16	30
Device Tree	15	—	—
Dhall	15	31	30
Django Templates	15	—	—
Dockerfile	15	—	—
Dot/Graphviz	15	—	—
Drools	15	—	—
Elixir	15	50	30
Elm	15	49	30
Elvish	15	72	30
Erlang	15	90	30
FIRRTL	15	—	—
Fortran	15	58	30
F#	15	60	30
GDScript	15	57	30
GDShader	15	—	—
Gherkin	15	—	—
Gleam	15	50	30
GLSL	15	41	30
GN	15	—	—
Go	15	74	30
Go Modules	15	—	—
Go Templates	15	27	30
Godot Resource	15	—	—
GraphQL	15	37	30
Groovy	15	44	30
Hack	15	—	—
Handlebars	15	—	—
Haskell	15	64	30
HCL/Terraform	15	37	30
HEEx	15	—	—
Helm	15	34	30
HLSL	15	30	30
HOCON	15	—	—
HTML	15	28	30
INI	15	—	—
Java	15	63	30
Javadoc	15	—	—
JavaScript	15	68	30
Jinja	15	28	30
jq	15	—	—
JSDoc	15	—	—
JSON	15	—	—
JSON Schema	15	—	—
JSONC	15	—	—
JSONnet	15	—	—
JSX	15	43	30
Julia	15	60	30
Just	15	—	—
KConfig	15	—	—
Kotlin	15	37	30
Kusto/KQL	15	—	—
LaTeX	15	28	30
Leo	15	—	—
Liquid	15	—	—
LLVM IR	15	—	—
Lua	15	37	30
Luau	15	44	30
Make	15	—	—
Markdown	15	—	—
MATLAB	15	53	30
Mermaid	15	—	—
MLIR	15	—	—
Modelica	15	—	—
Move	15	60	30
Nginx	15	—	—
Nim	15	49	30
Ninja	15	—	—
Nix	15	36	30
Noir	15	—	—
Objective-C	15	44	30
OCaml	15	52	30
Odin	15	38	30
P4	15	—	—
Pascal	15	52	30
Perl	15	64	30
PHP	15	77	30
PowerShell	15	53	30
PromQL	15	—	—
Properties	15	—	—
ProtoBuf	15	26	30
PRQL	15	—	—
Puppet	15	—	—
Python	15	62	30
QML	15	41	30
R	15	50	30
Racket	15	54	30
Razor	15	—	—
Rego	15	—	—
ReScript	15	98	30
Robot Framework	15	—	—
Ruby	15	130	30
Rust	15	84	30
Scala	15	54	30
Scheme	15	—	—
SCSS/Sass	15	52	30
Smalltalk	15	—	—
Snakemake	15	—	—
Solidity	15	62	30
SOQL	15	—	—
SQL	15	48	30
SQLite	15	—	—
Starlark	15	—	—
Svelte	15	51	30
Sway	15	—	—
Swift	15	26	30
SystemVerilog	15	72	30
Tact	15	—	—
Tcl	15	—	—
Thrift	15	—	—
TLA+	15	—	—
TOML	15	—	—
TSX	15	70	30
Twig	15	—	—
TypeScript	15	85	30
TypeSpec	15	—	—
V	15	22	30
VB.NET	15	62	30
VCL	15	—	—
Verilog	15	44	30
VHDL	15	36	30
Vue	15	36	30
Vyper	15	47	30
WGSL	15	54	30
WIT	15	—	—
XML	15	—	—
YAML	15	—	—
YANG	15	—	—
Zig	15	65	30
Zsh	15	—	—