Codex How To icon

Codex How To

phelan164/codex-howto · v0.5.0 · Development & Workflow

by Phelan164review

Engineering-first Codex curriculum and plugin with 9 skills, measured token-efficiency experiments, bounded orchestration, testing, review, and living knowledge maintenance.

InstallSourceClaim this pluginFollow0
Trust Score74Security71Surfaces9

Is Codex How To a fit?

From the plugin's manifest and HOL's scan. Anything the plugin does not declare is shown as not declared.

Works with

  • Codex
  • 9 skills

Before you install

Sign-in
Asks you to sign in when you install it
Declared access
Interactive, Read, Write
License
MIT

Check before relying on it

  • Security checks that did not finish: cisco-skill-scanner, codex-plugin-scanner. See the evidence
  • 2 medium findings from the scan. See the evidence
  • The publisher has not verified ownership on HOL.

What is Codex How To?

Codex How To is a published development & workflow plugin for AI coding agents in the codex ecosystem, developed by Phelan164 and distributed through the HOL AI plugin registry. Engineering-first Codex curriculum and plugin with 9 skills, measured token-efficiency experiments, bounded orchestration, testing, review, and living knowledge maintenance.

Canonical slug
phelan164/codex-howto
Version
v0.5.0 · updated Sep 29, 2026

Trust & Reputation

HOL Trust Score
74

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
76pts
Maintenance
55pts
MCP Posture
100pts
Plugin Security
71pts
Provenance
70pts
Publisher Quality
75pts

Registry Snapshot

Project link
Codex How To
Publisher verification
No
Marketplace source
Unknown
Scanner
Broker fallback
Security result
Needs review
Digest verified
Yes
9 bundled skills — copy or download SKILL.mdOpen skills

Trust & reputation

Trust & Reputation

HOL Trust Score
74

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
76pts
Maintenance
55pts
MCP Posture
100pts
Plugin Security
71pts
Provenance
70pts
Publisher Quality
75pts

Provenance

Plugin root
.
Source repo
https://github.com/Phelan164/codex-howto
Source commit
74887e939e60…
Publisher verified
No
Owner verified
Not owner verified

Continuous scanner CI detected

No action is required. This plugin receives the full trust score.

README badge not detected

Plugin owners can add the HOL badge to the repository README from Guard Plugins. Distribution, not security evidence. It adds a 2% engagement adjustment to the overall trust score and never changes the security result.

Security Posture

See how the Trust Score is computed
Needs review
Security result
71
Security score
0
High findings
Provider
registry-broker-fallback
Grade
C · review
Version
Unknown
cisco-skill-scanner: unknown

Findings

mediumpublishabilitypublishability.link.missing.privacyPolicyURL

privacyPolicyURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.termsOfServiceURL

termsOfServiceURL should be present for marketplace readiness.

lowoperational-securitysupply-chain.lockfile-missing

Repository snapshot does not include a lockfile.

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

Codex How To — Frequently asked questions

What is Codex How To?
Codex How To is an AI plugin in the HOL registry. Engineering-first Codex curriculum and plugin with 9 skills, measured token-efficiency experiments, bounded orchestration, testing, review, and living knowledge maintenance.
How do I install Codex How To?
Install Codex How To in your harness: Codex — codex plugin marketplace add Phelan164/codex-howto; Any agent — npx [email protected] add Phelan164/codex-howto. Full step-by-step guidance is on the HOL plugin page.
How do I install Codex How To in Codex?
To install Codex How To in Codex, start with codex plugin marketplace add Phelan164/codex-howto. The complete step-by-step install guide for Codex is on the HOL plugin page.
Is Codex How To free?
Pricing for Codex How To is published on its HOL plugin page when the maker schedules a launch.
How is the Trust Score for Codex How To computed?
Codex How To has a HOL Trust Score of 74 out of 100. The score is a weighted sum of six components from a static scan of the source, capped for high-severity findings and adjusted by two disclosed policies. Memberships and payments are not inputs, and a scan is not a safety guarantee. Full breakdown: https://hol.org/registry/plugins/phelan164%2Fcodex-howto/trust
Who publishes Codex How To?
Codex How To is published by Phelan164 and listed on HOL.
Is Codex How To available now?
Codex How To availability is listed on its HOL plugin page.

Install Guidance

Install in Codex

Install through the Codex CLI plugin marketplace.

Codex plugin docs

Optional: install HOL Guard for Codex first, so it can check this plugin's tools on your machine before Codex uses them.

  1. 1

    Register the marketplace

    Run in any terminal. Codex reads the marketplace entry from .agents/plugins/marketplace.json (or the legacy .claude-plugin path) in the repository. If the repository ships none, add the generated entry from the Advanced section below first.

    shell
  2. 2

    Install from the Plugins browser

    Open Codex, open the Plugins browser, choose the marketplace registered by the previous command, and install codex-howto.

  3. 3

    Check the marketplace is registered

    This confirms the marketplace source only. Confirm the plugin itself is enabled in the Plugins browser before relying on it.

    shell

Did setup work in Codex?

No setup reports for Codex yet. Self-reported by signed-in visitors. Copying a command is not counted, and most installs are never reported.

Attested installs: Fewer than 10 attested installs of this plugin in week 2026-W43, so no number is shown. Counted from opt-in HOL Guard install reports, once per machine and runtime, and never mixed with the answers above. How install reports work.

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Plugin Manifest

{
  "name": "codex-howto",
  "version": "0.5.0",
  "description": "Model-adaptive Codex workflows for engineering and review-first knowledge maintenance.",
  "author": {
    "name": "Phelan164",
    "url": "https://github.com/Phelan164"
  },
  "homepage": "https://github.com/Phelan164/codex-howto",
  "repository": "https://github.com/Phelan164/codex-howto",
  "license": "MIT",
  "keywords": [
    "codex",
    "engineering",
    "skills",
    "workflows",
    "knowledge-management"
  ],
  "skills": "./",
  "interface": {
    "displayName": "Codex How To",
    "developerName": "Phelan164",
    "shortDescription": "Engineering-first Codex workflows",
    "composerIcon": "./assets/icon.svg",
    "longDescription": "A progressive guide, reusable engineering skills, and a review-first living knowledge workflow for Codex.",
    "category": "Developer Tools",
    "capabilities": [
      "Interactive",
      "Read",
      "Write"
    ],
    "websiteURL": "https://github.com/Phelan164/codex-howto",
    "defaultPrompt": [
      "Choose the smallest engineering workflow for my task.",
      "Run an evidence-driven engineering loop.",
      "Review this change against its requirements.",
      "Query or maintain the Codex Living Wiki."
    ]
  },
  "registryIndexVersion": 5
}

Marketplace Source

Repo URL
https://github.com/Phelan164/codex-howto
Marketplace path
Unknown
Source path
plugins/Phelan164/codex-howto
Install policy
AVAILABLE

Skills

9 SKILL.md files ship with this plugin. Preview, copy, or download each one, then install them with the Skills CLI.

Share
skills-cli

  • build-backend

    skills/build-backend/SKILL.md

    Build or modify backend APIs, services, jobs, persistence, and integrations while preserving contracts, authorization, data integrity, and failure behavior. Use for server-side features, database changes, background processing, backend defects, and service refactors; do not use for frontend-only or infrastructure-only work.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • build-frontend

    skills/build-frontend/SKILL.md

    Build or modify frontend interfaces using repository-native components while preserving accessibility, responsive behavior, state handling, and visual verification. Use for UI features, design implementation, forms, client-side defects, and frontend refactors; do not use for backend-only or infrastructure-only work.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • engineering-loop

    skills/engineering-loop/SKILL.md

    Implement a repository code or configuration change through reproduction, focused checks, review, and evidence. Use for end-to-end features and fixes; not for explanation-only, review-only, research, content publishing, or production operations.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • maintain-codex-wiki

    skills/maintain-codex-wiki/SKILL.md

    Maintain a review-first Markdown knowledge base for Codex practices with source provenance, engineering capture, citation-aware queries, explicit archive and promotion, and deterministic linting. Use when asked to capture a durable engineering lesson, ingest Codex research, query or archive what the repository knows, check wiki health, reconcile conflicting guidance, or promote verified knowledge.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • operate-devops

    skills/operate-devops/SKILL.md

    Plan and implement infrastructure, CI/CD, container, deployment, observability, and operational configuration changes with least privilege, staged validation, and rollback awareness. Use for pipelines, infrastructure as code, Kubernetes, containers, release automation, monitoring, and production-readiness work; do not use to perform destructive production actions without explicit authorization.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • orchestrate-engineering

    skills/orchestrate-engineering/SKILL.md

    Coordinate complex engineering work across bounded subagents while protecting the main context, preventing edit conflicts, and measuring whether delegation was worthwhile. Use when the user asks to delegate, parallelize, orchestrate, use subagents, fan out a review, or handle a large task with independent workstreams; do not use for small, tightly coupled, or inherently sequential tasks.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • review-code

    skills/review-code/SKILL.md

    Review code changes for correctness defects, regressions, security risks, data-integrity problems, concurrency hazards, and missing meaningful tests. Use for pull requests, branches, commits, patches, or working-tree reviews; do not use for implementation unless the user separately requests fixes.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • review-security

    skills/review-security/SKILL.md

    Review application and infrastructure changes for exploitable security risks by tracing assets, trust boundaries, attacker-controlled input, authorization, sensitive data, and dangerous sinks. Use for security reviews, threat-focused PR reviews, authentication or authorization changes, input handling, secrets, dependencies, and infrastructure permissions; do not use to exploit live systems or modify code unless separately requested.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • test-software

    skills/test-software/SKILL.md

    Design, implement, and evaluate risk-based software tests across unit, integration, contract, end-to-end, and regression layers. Use when adding tests, reproducing bugs, improving coverage, diagnosing flaky tests, or defining a test strategy; do not use to change production behavior unless the user also requests implementation.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

File Inventory

.codex-plugin/plugin.json

plugin-manifest

1,079 bytes

5157dc288f58b505…

AGENTS.md

file

1,545 bytes

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assets/icon.svg

asset

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README.md

file

28,456 bytes

b74f21abb97d3f11…

SECURITY.md

file

1,092 bytes

0b29eff8c4fbdbc7…

skills/build-backend/agents/openai.yaml

skill

211 bytes

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skills/build-backend/references/contracts-and-data.md

skill

1,699 bytes

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skill

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skill

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History, reviews, and alternatives

Launch history

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