Vibe Coding Toolkit is a collection of documentation, prompts, templates, and Claude Code tools that guide AI agents through preparing a development environment, starting applications, and improving existing projects. It is for developers who use AI coding agents and want to organize decisions, preserve project context, and check code quality during development. The catalogue entries are instructions drawn from this toolkit's agent-assisted workflow.
Borrowing it
Nothing to install: this file belongs to soumatheusgomes/vibe-coding-toolkit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/soumatheusgomes/vibe-coding-toolkit/main/AGENTS.mdgit clone --depth 1 https://github.com/soumatheusgomes/vibe-coding-toolkitWrote 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/instructions/soumatheusgomes/vibe-coding-toolkit/agents-md)<a href="https://agentmods.dev/instructions/soumatheusgomes/vibe-coding-toolkit/agents-md"><img src="https://agentmods.dev/badge/instructions/soumatheusgomes/vibe-coding-toolkit/agents-md/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/instructions/soumatheusgomes/vibe-coding-toolkit/agents-md"><img src="https://agentmods.dev/badge/instructions/soumatheusgomes/vibe-coding-toolkit/agents-md.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 | $0.00638 | $0.00638 |
| Opus 5.5 | $0.00255 | $0.00255 |
| Sonnet 5.5 | $0.00128 | $0.00128 |
| Haiku 4.5 | $0.00064 | $0.00064 |
Grade A, and why
vibe-coding-toolkit AGENTS.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 9d 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.
Vibe Coding Toolkit
This repository distributes documentation, prompts, and templates. It is not a Next.js application; projects are generated in separate directories.
Scope and sources
- Preserve the entry points: machine setup, project bootstrap, and tool-specific adoption.
- Recipe:
docs/04-project-bootstrap.md; defaults:docs/06-project-defaults.md; entry point:docs/prompts/11-next-project-bootstrap.md. - Catalog:
docs/tools/16-vercel-skills.md. Use thenamefromSKILL.md, rather than inferring it from the directory name. - Generated documents:
templates/project-docs/manifest.json, with four root files and five files indocs/. Product destination:PRODUCT.md; preserve the historical URLtemplates/product.md.template. - Portable instructions:
templates/AGENTS.md.template; the Claude template imports that file. - Use current official sources and Context7 where relevant. Never send secrets in queries.
- English is the canonical language for documentation, prompts, templates, examples, and assets. Only
README.pt-BR.mdandREADME.es.mdare localized; keep them aligned withREADME.md. Agent conversations follow the user's language.
Changes and validation
- Reuse templates and rules. Do not add an application, custom generator, or product dependencies at the root.
- Keep public paths in English; update links, anchors, indexes, recipes, and examples together when their contracts change.
- Validate executable templates in a temporary project; check local links, configuration syntax, and
git diff --check. - Validator regression tests:
node --test scripts/validate-docs.test.mjs. Links, anchors, manifest, and JSON:node scripts/validate-docs.mjs. - Reproducible baseline validation:
node scripts/validate-next.mjswith Node.js 24, npm, and network access. It creates and removes the temporary project; dependencies stay outside the root. - Rule self-check:
node templates/eslint/verify.mjs templates/eslint/eslint-rules/index.cjs, in an environment with ESLint available. - Do not copy credentials, private domains, dumps, personal caches, or tightly coupled harnesses into public examples.
- Do not add Git blockers, branch/worktree requirements, or commit/push hooks.
- Publishing and pushing require an explicit request. The bootstrap does not publish the application.
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.
- 9d ago Changed · +1 lines · +36 tokens per session bbe0aa3a52f5
- 12d ago First seen · 34 lines · 602 tokens per session scan A 0e6373b8f97d
vibe-coding-toolkit AGENTS.md is an instructions file published in the GitHub repository soumatheusgomes/vibe-coding-toolkit (2,045 stars, last pushed 8d ago), licensed MIT. It adds 638 tokens to every session, about $0.0026 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 2026-10-15.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.