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-authorizationgit 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-authorization)<a href="https://agentmods.dev/skills/greenpau/caddy-security/configuration-authorization"><img src="https://agentmods.dev/badge/skills/greenpau/caddy-security/configuration-authorization/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-authorization"><img src="https://agentmods.dev/badge/skills/greenpau/caddy-security/configuration-authorization.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 | $0.00045 | $0.04332 |
| Opus 5.5 | $0.00018 | $0.01733 |
| Sonnet 5.5 | $0.00009 | $0.00866 |
| Haiku 4.5 | $0.00005 | $0.00433 |
Grade A, and why
configuration-authorization 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -H 'X-Auth-Realm: local' --user 'jsmith:My@Password123' https://app.example.com/api/foo How it starts
The opening of the file, as written. The whole thing — 435 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Configuration Authorization
Purpose
Use this skill to configure authorization policy <name> blocks and the
route-level authorize [<matcher>] with <policy> handler.
Use configuration-http-integrations to place protected routes, select matchers, wire same-host or split-host applications, and check directive ordering.
Use configuration-crypto to configure JWT
verification material, token names/lifetimes, generated or secret-backed keys,
System API system keys for remote Basic or API-key authentication, and strict
access token profile verification.
Use the static claims enrichment reference for
claims enrichment static blocks, exact JSON values, identity bindings and
ACL-only decisions. Native app claims_enrichment bindings also load companion
Caddy factories; read the
host plugin contract before
adding another backend. Lower-level AuthCrunch interfaces alone do not establish
root injection support.
Use the external authorization reference
for external authorization httpjson blocks, required policy-service decisions,
private TLS trust, mTLS service credentials and backend lifecycle. External allow
is required after local checks; it cannot override local denial.
Read these files when details matter:
caddyfile_authz.gofor the policy block.caddyfile_authz_acl.goandcaddyfile_authz_acl_shortcuts.gofor ACLs.caddyfile_authz_bypass.gofor bypass rules.caddyfile_authz_crypto.gofor token verification keys.caddyfile_authz_inject.gofor claim header injection.caddyfile_authz_misc.goforenable,disable,validate,set, andwith.plugin_authz.gofor route-levelauthorizesyntax.../go-authcrunch/pkg/authz/config.goandgatekeeper.gofor policy defaults and runtime wiring.../go-authcrunch/pkg/authz/validator/for token source, bearer, method/path, path-ACL, source-address, Basic, and API-key behavior.../go-authcrunch/pkg/acl/for ACL fields, aliases, match strategies, and action semantics.
What ships with it
6 files 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 · 435 lines · 45 tokens per session scan A 898dd511abc7
configuration-authorization is a skill published in the GitHub repository greenpau/caddy-security (2,263 stars, last pushed today), licensed Apache-2.0. It adds 45 tokens to every session and 4,332 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-25.
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