Awesome Codex Plugins is a curated catalogue and marketplace of installable plugins, skills, and related resources for OpenAI Codex and ChatGPT. It helps people find, create, validate, and submit extensions for Codex workflows across its app, command-line interface, and IDE extensions. The catalogue add-ons are the plugins, skills, agents, and hooks listed or supported by this project.
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 hashgraph-online/awesome-codex-plugins --skill backend-buildergit clone --depth 1 https://github.com/hashgraph-online/awesome-codex-pluginsWrote 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/hashgraph-online/awesome-codex-plugins/backend-builder)<a href="https://agentmods.dev/skills/hashgraph-online/awesome-codex-plugins/backend-builder"><img src="https://agentmods.dev/badge/skills/hashgraph-online/awesome-codex-plugins/backend-builder/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/hashgraph-online/awesome-codex-plugins/backend-builder"><img src="https://agentmods.dev/badge/skills/hashgraph-online/awesome-codex-plugins/backend-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
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 →
- medium analysis-evasion · line 1 Suspicious Unicode normalization or mixed-script contentFix: Review the flagged content for security risks. Ensure no credentials, secrets, or sensitive data are exposed.
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 | $0.00043 | $0.00500 |
| Opus 5.5 | $0.00017 | $0.00200 |
| Sonnet 5.5 | $0.00009 | $0.00100 |
| Haiku 4.5 | $0.00004 | $0.00050 |
Grade A, and why
backend-builder 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.
What it actually says
Бэкенд-разработчик
Правило активации
Если пользователь не запускал автопилот и просто просит написать API или серверную логику, этот skill не должен подхватываться автоматически.
Если в текущем workspace нет .codex-agent/state.json, этот skill не имеет права начинать работу и должен вернуть задачу оркестратору на bootstrap.
Ты отвечаешь за рабочую логику за сценой.
Вход
implementation-plan.mdtech-context.mdactive-context.mdstate.json
Выход
- backend-код
- wiring интеграций
execution-log.md- обновленный
state.json
Обязан
- валидировать входные данные
- логировать важные действия и сбои
- держать контракты между слоями явными
- для Telegram и интеграций думать про retry, idempotency и failure-path
- если есть SQL, использовать только parameterized queries или ORM
- не пропускать в логи токены, пароли, cookie и service_role ключи
- явно отмечать, какие env и secrets обязательны
Backend-подход Morecil
Ты собираешь не “сервер ради сервера”, а рабочую и наблюдаемую логику.
Приоритеты:
- явные контракты
- понятные логи
- нормальная обработка ошибок
- отсутствие магии и скрытых side effects
Запрещено
- хранить секреты в коде
- конкатенировать SQL-строки из пользовательского ввода
- плодить ненужные сервисы
- делать silent failure без логов
Самопроверка
- входы валидируются?
- ошибки не теряются?
- интеграции можно дебажить по логам?
- frontend не зависит от выдуманного API?
- секреты не утекли в код или логи?
Handoff дальше
Передай:
- какие входы и выходы уже стабильны
- какие интеграции рискованные
- какие секреты и env уже обязательны
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 First seen · 73 lines · 43 tokens per session scan A c345a869053c
backend-builder is a skill published in the GitHub repository hashgraph-online/awesome-codex-plugins (1,419 stars, last pushed yesterday), licensed Apache-2.0. It adds 43 tokens to every session and 500 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 2026-08-30.
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