A web server that delivers websites and forwards requests to application servers. It can obtain and renew HTTPS certificates automatically, encrypting connections to a site.

It is for hosting static files, placing a web server in front of an app, forwarding requests to local services, and enabling HTTPS.

It reduces the manual work involved in serving a site securely and routing traffic to an application.

caddy — Skill for Claude Code and Codex by G1Joshi

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.

Any agent

npx skills add G1Joshi/Agent-Skills --skill caddy

Clone the repo

git clone --depth 1 https://github.com/G1Joshi/Agent-Skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/g1joshi/agent-skills/caddy/github.svg)](https://agentmods.dev/skills/g1joshi/agent-skills/caddy)

Your own site

<a href="https://agentmods.dev/skills/g1joshi/agent-skills/caddy"><img src="https://agentmods.dev/badge/skills/g1joshi/agent-skills/caddy/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/g1joshi/agent-skills/caddy"><img src="https://agentmods.dev/badge/skills/g1joshi/agent-skills/caddy.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 363 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00016	$0.00363
Opus 5	$0.00008	$0.00181
Sonnet 5	$0.00003	$0.00073
Haiku 4.5	$0.00002	$0.00036

Measured 9d ago against content hash 3a0adeac7b08, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

caddy scanned grade A with 0 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 9d ago.

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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/devops/caddy/SKILL.md · 57 lines

What it actually says

Caddy

Caddy 2 is a powerful, enterprise-ready web server with automatic HTTPS by default. v2.8 (2025) improves HTTP/3 performance and certificate management.

When to Use

HTTPS Default: You want zero-config SSL. Caddy obtains and renews certificates automatically.
Simplicity: Caddyfile is the most human-readable config format.
Go Apps: Can act as a process manager or library for Go applications.

Quick Start

# Caddyfile
example.com {
    reverse_proxy localhost:3000
    encode zstd gzip
    file_server
}

Core Concepts

Caddyfile

Simple configuration format. directive argument { block }

JSON Config

The native config format. Caddyfile is adapted to JSON. API allows real-time config updates via REST.

Modules

Caddy is extensible. Plugins (like caddy-dns-cloudflare) are compiled in via xcaddy.

Best Practices (2025)

Do:

Use Caddyfile: For 99% of cases, it's enough.
Persist /data: Caddy stores certificates in the /data directory. Mount this volume in Docker.
Use caddy fmt: Auto-format your config.

Don't:

Don't sit behind another proxy: If you hide Caddy behind Cloudflare/Nginx, you break its ACME challenges unless you configure it specifically.

References

Caddy Documentation

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.

9d ago First seen · 57 lines · 16 tokens per session scan A 3a0adeac7b08

Subscribe to this mod's changes

caddy is a skill published in the GitHub repository G1Joshi/Agent-Skills (12 stars, last pushed 7mo ago), licensed MIT. It adds 16 tokens to every session and 363 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Cloud DevOps and cloud agent-skills antigravity chatgpt claude cursor gemini

shipping-and-launch

Prepares production launches. Use when preparing to deploy to production, or when asking what needs to be in place before shipping. Use when you need a pre-launch checklist, when setting up monitoring, when planning a staged rollout, or when you need a rollback strategy.

addyosmani/agent-skills · 57 tokens

caddy