setup

An interactive setup command for Zig development. Zig is a programming language, and ZLS is its language server, which provides code intelligence such as editor assistance.

In plain words
What is it for?
Use it to install or verify Zig and ZLS, configure the required environment setting, and test LSP support with a sample Zig project.
Why use it?
It checks and installs the tools needed for Zig development, then enables language-server support in Claude Code.

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/zig-lsp/setup
Clone the repo
git clone --depth 1 https://github.com/zircote/zig-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 529 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 3 findings. 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 $0.00529
Opus 5 $0.00004 $0.00264
Sonnet 5 $0.00002 $0.00106
Haiku 4.5 $0.00001 $0.00053

Measured yesterday against content hash 84f0a1bc9fcc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade D, and why

setup scanned grade D with 3 findings 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo snap install zig --classic --beta

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

cd - && rm -rf /tmp/test-zig-lsp

Makes network callslowCapability

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

wget https://ziglang.org/download/0.13.0/zig-linux-x86_64-0.13.0.tar.xz
commands/setup.md · 107 lines

What it actually says

Zig LSP Setup

This command will configure your Zig development environment with ZLS (Zig Language Server) and essential tools.

Prerequisites Check

First, verify Zig is installed:

zig version

Installation Steps

1. Install Zig Compiler

macOS (Homebrew):

brew install zig

Linux (Snap):

sudo snap install zig --classic --beta

Manual installation:

# Download from https://ziglang.org/download/
# Extract and add to PATH
wget https://ziglang.org/download/0.13.0/zig-linux-x86_64-0.13.0.tar.xz
tar -xf zig-linux-x86_64-0.13.0.tar.xz
sudo mv zig-linux-x86_64-0.13.0 /usr/local/zig
echo 'export PATH=$PATH:/usr/local/zig' >> ~/.bashrc
source ~/.bashrc

2. Install ZLS (Zig Language Server)

macOS (Homebrew):

brew install zls

Linux (Arch):

sudo pacman -S zls

Build from source:

git clone https://github.com/zigtools/zls
cd zls
zig build -Doptimize=ReleaseSafe
sudo cp zig-out/bin/zls /usr/local/bin/

3. Verify Installation

zig version
zls --version

4. Enable LSP in Claude Code

export ENABLE_LSP_TOOL=1

Verification

Test the LSP integration:

# Create a test project
mkdir -p /tmp/test-zig-lsp && cd /tmp/test-zig-lsp
zig init-exe

# Run checks
zig fmt --check src/main.zig
zig build

# Clean up
cd - && rm -rf /tmp/test-zig-lsp

Configuration

Create a zls.json in your project root for custom settings:

cat > zls.json <<EOF
{
    "enable_snippets": true,
    "enable_ast_check_diagnostics": true,
    "enable_autofix": true,
    "warn_style": true,
    "highlight_global_var_declarations": true
}
EOF
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 · 107 lines · 8 tokens per session scan D 84f0a1bc9fcc

Subscribe to this mod's changes

setup is a command published in the GitHub repository zircote/zig-lsp (1 stars, last pushed 22d ago), licensed MIT. It adds 8 tokens to every session and 529 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it D with 3 findings (asks for root, recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.