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 darellchua2/opencode-config-template --skill authentication-authorization-skillgit clone --depth 1 https://github.com/darellchua2/opencode-config-templateWrote 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/darellchua2/opencode-config-template/authentication-authorization-skill)<a href="https://agentmods.dev/skills/darellchua2/opencode-config-template/authentication-authorization-skill"><img src="https://agentmods.dev/badge/skills/darellchua2/opencode-config-template/authentication-authorization-skill/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/darellchua2/opencode-config-template/authentication-authorization-skill"><img src="https://agentmods.dev/badge/skills/darellchua2/opencode-config-template/authentication-authorization-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 211 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 446 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
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 | $0.00040 | $0.00742 |
| Opus 5.5 | $0.00016 | $0.00297 |
| Sonnet 5.5 | $0.00008 | $0.00148 |
| Haiku 4.5 | $0.00004 | $0.00074 |
Grade A, and why
authentication-authorization-skill 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 35 lines — stays where its author put it; the contents beside it link to each section on GitHub.
What I do
Implement authn/authz: OAuth2/OIDC flows, JWT lifecycle, sessions, RBAC/ABAC, framework integration, password hashing, CSRF. (This skill implements; security-audit-skill audits.)
When to use me
Login/signup flows, OAuth social login, RBAC design, JWT management, NextAuth/Passport integration, API auth middleware, CSRF hardening, MFA.
Related: security-audit-skill (auditing/detection) · api-design-skill (endpoint design) · nextjs-standard-setup-skill (scaffolding incl. auth).
House patterns
two-layer-keycloak-authorization — Keycloak defense-in-depth: Layer 1 = coarse Policy Enforcer (route-level /admin/* requires role, method-level DELETE scopes); Layer 2 = fine-grained app-layer composite roles (ownership user.ownOrg === resource.orgId, tenant scoping). Layer 2 runs EVEN IF Layer 1 passes — the Policy Enforcer cannot enforce data-level authorization.
one-policy-per-role-type (provenance: betekk-keycloak/LEARNINGS) — in Keycloak Authorization Services, one policy per role type (admin-policy, editor-policy, …), composed at the permission level via ALL/ANY. If a policy condition checks more than one role type, split it — collapsed policies resist audits and grant unintended access when roles change.
stateless-cookie-cache-maxage-match-session — with JWE cookies, cookieCache.maxAge MUST be >= session.cookie.maxAge. If the decryption cache expires first, findSession() returns null and silently deletes the session — users logged out mid-session with no error. The cache is an optimization and must never terminate a session.
chunked-cookie-secure-prefix-mismatch — always use one shared cookie utility for set/get; never hand-roll __Secure-/__Host- prefix logic per module. Browsers silently drop __Secure- cookies without Secure (or over HTTP) and __Host- without Path=/+no Domain; one module writing __Secure-session while another reads session = session loss / CSRF mismatch.
cookie-only-proxy-with-server-rbac — in stateless mode the middleware's ONLY job is "does a session cookie exist?" (local check). Token refresh → customSession/JWT callback (once per session); RBAC → per-route server layouts or resolver guards (only when that route renders). Any await fetch in middleware adds 50–500 ms to EVERY navigation.
Detection: rg 'export\s+(async\s+)?function\s+middleware' --type ts -A 30 | rg 'await|fetch|http'
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.
- 1mo ago Changed · -582 lines 0d1fd324b71c
- 1mo ago First seen · 617 lines · 40 tokens per session scan A 885bd401c00e
authentication-authorization-skill is a skill published in the GitHub repository darellchua2/opencode-config-template (6 stars, last pushed 28d ago), licensed Apache-2.0. It adds 40 tokens to every session and 742 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 2026-08-31.
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