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 J-Pster/Psters_AI_Workflow --skill nestjs-conventionsgit clone --depth 1 https://github.com/J-Pster/Psters_AI_WorkflowWrote 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/j-pster/psters_ai_workflow/nestjs-conventions)<a href="https://agentmods.dev/skills/j-pster/psters_ai_workflow/nestjs-conventions"><img src="https://agentmods.dev/badge/skills/j-pster/psters_ai_workflow/nestjs-conventions/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/j-pster/psters_ai_workflow/nestjs-conventions"><img src="https://agentmods.dev/badge/skills/j-pster/psters_ai_workflow/nestjs-conventions.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 | $0.00036 | $0.00260 |
| Opus 5 | $0.00018 | $0.00130 |
| Sonnet 5 | $0.00007 | $0.00052 |
| Haiku 4.5 | $0.00004 | $0.00026 |
Grade A, and why
nestjs-conventions 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 12d 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
NestJS Conventions
When working in backend/ (or NestJS app root), follow these conventions:
- Structure: Feature-based modules. Each feature:
*.module.ts,*.controller.ts,*.service.ts, entities,dto/. No business logic in controllers. - DTOs: Always use DTOs with class-validator; separate create/update/response. User-facing messages in English.
- Migrations: Never create migration files manually. Use TypeORM CLI:
npm run typeorm:generate -- src/database/migrations/DescriptiveName. Entities drive schema. - Guards/Interceptors: Use common guards and interceptors; constructor injection.
- Config: @nestjs/config; typed config; no hardcoded secrets.
- Errors: NestJS exception filters; consistent error format; English messages.
- IAC: Do not run CDK deploy from backend work unless project-specific; use AWS CLI for actual AWS changes.
Reference project rules and structure docs for full details.
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.
- 12d ago First seen · 19 lines · 0 tokens per session scan A 6b348aef2421
nestjs-conventions is a skill published in the GitHub repository J-Pster/Psters_AI_Workflow (289 stars, last pushed 5mo ago), licensed MIT. It adds 36 tokens to every session and 260 once invoked, about $0.0002 per session on Opus 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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