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 agentmods add instructions/obviousworks/vibe-coding-ai-rules/securitygit clone --depth 1 https://github.com/obviousworks/vibe-coding-ai-rulesWhat 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 | $0.00236 | $0.00236 |
| Opus 5 | $0.00118 | $0.00118 |
| Sonnet 5 | $0.00047 | $0.00047 |
| Haiku 4.5 | $0.00024 | $0.00024 |
Grade A, and why
vibe-coding-ai-rules security.instructions.md 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 2d 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
Security Standards
Core Principles
- All AI-generated code requires human security review
- Trust nothing, verify everything
- Defense in depth: multiple security layers
- Principle of least privilege
Input Validation (MANDATORY)
- Validate ALL user input with schema validation (Zod, Pydantic, etc.)
- Never trust client-side data
- Sanitize HTML content before rendering
- Validate file uploads: MIME type, extension, max size
Injection Prevention
- NEVER concatenate SQL strings — use parameterized queries
- NEVER pass user input to shell commands
- NEVER use dangerouslySetInnerHTML without DOMPurify
- NEVER use eval() or Function() with user input
Authentication & Secrets
- Never store secrets in source code or client-side code
- Use environment variables for all credentials
- Implement proper JWT validation with algorithm pinning
- Use httpOnly, secure, sameSite cookies
API Security
- Rate limiting on all endpoints
- CORS configuration: explicit origins only
- Input size limits on all endpoints
- Proper HTTP security headers (CSP, HSTS, etc.)
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.
- 2d ago First seen · 36 lines · 236 tokens per session scan A 3b00fe676593
vibe-coding-ai-rules security.instructions.md is an instructions file published in the GitHub repository obviousworks/vibe-coding-ai-rules (88 stars, last pushed 2mo ago), licensed MIT. It adds 236 tokens to every session, about $0.0012 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.
Other instructions, from other repositories
n.codes AGENTS.md
Instructions for yungookim/n.codes, covering repository guidelines, core architecture principle: agentic ui generation, project structure & module organization, cli module organization (cli/lib/) and build, test, and development commands.
n.codes CLAUDE.md
Instructions for yungookim/n.codes, a project described as: Let users generate features with prompts in your app.
Vibe-Coding-Dev-Setup general.instructions.md
Instructions for AndreasKarz/Vibe-Coding-Dev-Setup, covering trust boundary, project general coding standards, application structure, architecture overview and technology stack.
Vibe-Coding-Dev-Setup tests.instructions.md
Instructions for AndreasKarz/Vibe-Coding-Dev-Setup, covering general guidelines, test naming conventions, test data and setup, test structure and assertions.
Vibe-Coding-Dev-Setup graphql.instructions.md
Instructions for AndreasKarz/Vibe-Coding-Dev-Setup, covering graphql layer rules, layer separation, implementation-first approach, attribute stacking order and dataloader convention.
Vibe-Coding-Dev-Setup worker.instructions.md
Instructions for AndreasKarz/Vibe-Coding-Dev-Setup, covering worker layer rules, consumer design, observability, error handling and quartz jobs.