caddy-security is a security application and set of plugins for Caddy v2, a web server, that handles user authentication and controls access to HTTP requests. It supports methods including local, LDAP, OpenID Connect, OAuth 2.0, SAML, JWT, and PASETO, and is used to protect web services behind Caddy.
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.
npx skills add greenpau/caddy-security --skill configuration-sso-appgit clone --depth 1 https://github.com/greenpau/caddy-securityWrote 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.
[](https://agentmods.dev/skills/greenpau/caddy-security/configuration-sso-app)<a href="https://agentmods.dev/skills/greenpau/caddy-security/configuration-sso-app"><img src="https://agentmods.dev/badge/skills/greenpau/caddy-security/configuration-sso-app/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.
<a href="https://agentmods.dev/skills/greenpau/caddy-security/configuration-sso-app"><img src="https://agentmods.dev/badge/skills/greenpau/caddy-security/configuration-sso-app.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00048 | $0.01505 |
| Opus 5.5 | $0.00019 | $0.00602 |
| Sonnet 5.5 | $0.00010 | $0.00301 |
| Haiku 4.5 | $0.00005 | $0.00151 |
Grade A, and why
configuration-sso-app 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 today.
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.
How it starts
The opening of the file, as written. The whole thing — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Configuration SSO App
Purpose
Use this skill to configure the SSO app feature, expressed in Caddyfile as
sso provider <name>. This is the Single Sign-On with SAML app path, not OAuth
login provider setup.
External OAuth/OIDC login belongs to
configuration-oauth-providers.
External saml identity provider <name> login belongs to
configuration-saml-providers.
Those are separate configurations, not prerequisites for an SSO app change.
The Caddyfile syntax is authoritative in caddyfile_sso_provider.go; the
provisioning behavior is authoritative in the selected go-authcrunch module,
especially pkg/sso/config.go, pkg/sso/provider.go, pkg/sso/request.go,
pkg/sso/metadata.go, and pkg/authn/handle_http_apps_sso.go.
Shape
{
security {
local identity store localdb {
realm local
path assets/config/users.json
}
sso provider aws {
entity_id caddy-authp-idp
driver aws
cert assets/sso/authp_saml.crt
private key assets/sso/authp_saml.key
location https://example.com/auth/apps/sso/aws
}
authentication portal myportal {
enable identity store localdb
enable sso provider aws
}
}
}
The provider name must be unique and must match the portal's
enable sso provider <name> value.
Supported Fields
The current Caddyfile parser supports only these lines:
disabledentity_id <name>mapped to authcrunchentity_iddriver awsmapped to authcrunchdrivercert <path>mapped to authcrunchcert_pathprivate key <path>mapped to authcrunchprivate_key_pathlocation <url>appended to authcrunchlocations
Although driver is syntactically optional in the Caddyfile parser, generate
driver aws. go-authcrunch rejects an empty driver and currently supports
only aws.
At least one location <url> is required by the Caddyfile parser, even for a
disabled provider. Multiple locations are allowed and become SAML
SingleSignOnService entries in generated metadata. Authcrunch embeds each
configured location verbatim, so use the externally reachable SSO POST URL,
including any portal base-path prefix such as /auth.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- today First seen · 166 lines · 48 tokens per session scan A 22c18e36c2e6
configuration-sso-app is a skill published in the GitHub repository greenpau/caddy-security (2,263 stars, last pushed today), licensed Apache-2.0. It adds 48 tokens to every session and 1,505 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-25.
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