setup

An interactive setup command for a Lua development environment. Lua is a programming language, and a language server provides editor help such as code understanding and diagnostics.

In plain words
What is it for?
Use it to install or verify the Lua language server, StyLua formatter, Luacheck linter, and optional Busted testing framework, then enable language-server support.
Why use it?
It gathers the main tools needed to develop Lua code and checks that they are installed, reducing manual setup work.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/zircote/lua-lsp/setup
Clone the repo
git clone --depth 1 https://github.com/zircote/lua-lsp
Per session 8 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 530 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00008 $0.00530
Opus 5 $0.00004 $0.00265
Sonnet 5 $0.00002 $0.00106
Haiku 4.5 $0.00001 $0.00053

Measured yesterday against content hash 8481e318fc4c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

setup scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -L https://github.com/LuaLS/lua-language-server/releases/latest/download/lua-language-server-linux-x64.tar.gz -o luals.tar.gz
commands/setup.md · 120 lines

What it actually says

Lua LSP Setup

This command will configure your Lua development environment with lua-language-server and essential tools.

Prerequisites Check

First, verify Lua is installed:

lua -v

Installation Steps

1. Install lua-language-server

macOS:

brew install lua-language-server

Linux:

# Download from GitHub releases
curl -L https://github.com/LuaLS/lua-language-server/releases/latest/download/lua-language-server-linux-x64.tar.gz -o luals.tar.gz
tar -xzf luals.tar.gz -C ~/.local/bin
rm luals.tar.gz

Windows:

# Download from GitHub releases
# https://github.com/LuaLS/lua-language-server/releases

2. Install Formatting Tools

# StyLua (Rust-based formatter)
cargo install stylua

3. Install Linting Tools

# Luacheck (requires LuaRocks)
luarocks install luacheck

4. Install Testing Framework (Optional)

# Busted testing framework
luarocks install busted

5. Verify Installation

lua-language-server --version
stylua --version
luacheck --version

6. Enable LSP in Claude Code

export ENABLE_LSP_TOOL=1

Verification

Test the LSP integration:

# Create a test file
cat > test_lsp.lua << 'EOF'
local function greet(name)
    return "Hello, " .. name .. "!"
end

print(greet("World"))
EOF

# Run Luacheck
luacheck test_lsp.lua

# Format with StyLua
stylua --check test_lsp.lua

# Clean up
rm test_lsp.lua

Configuration

Create .luacheck for project-specific linting rules:

-- .luacheck
std = "lua51+busted"
ignore = {"212/self", "213"}
max_line_length = 120

Create .stylua.toml for formatting preferences:

# .stylua.toml
column_width = 100
line_endings = "Unix"
indent_type = "Spaces"
indent_width = 4
quote_style = "AutoPreferDouble"
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 120 lines · 8 tokens per session scan A 8481e318fc4c

Subscribe to this mod's changes

setup is a command published in the GitHub repository zircote/lua-lsp (1 stars, last pushed 22d ago), licensed MIT. It adds 8 tokens to every session and 530 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.