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/howells/scaffold/agents-mdgit clone --depth 1 https://github.com/howells/scaffoldWhat 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 | $0.00711 | $0.00711 |
| Opus 5 | $0.00356 | $0.00356 |
| Sonnet 5 | $0.00142 | $0.00142 |
| Haiku 4.5 | $0.00071 | $0.00071 |
Grade A, and why
scaffold 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 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.
How it starts
The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Scaffold
The house baseline for starting or standardising a Howells project. It defines repo shape, stack, package boundaries, agent workflow, deployment, and launch checks. It is a standard, not a template.
docs/ is the source of truth. skills/scaffold is a distribution surface, generated from it.
What a new project takes from here
Read docs/README.md first, then open only the reference page needed for the task.
Defaults a new repo inherits:
- pnpm monorepo, usually
apps/*andpackages/*, with Turborepo and cache disabled until the repo proves it's deterministic. - Next.js App Router, React, Tailwind v4, Base UI, and Storybook when the repo exports reusable UI; unified Radix is the deliberate opt-out.
@howells/linton the Oxlint/Oxfmt lane,@howells/typescript-configfor tsconfig presets,@howells/envyfor typed env parsing and deploy-time env checks.- Drizzle and Neon for product data, the narrowest typed API boundary that fits, and React Query when the client owns server-state.
@howells/aias the provider baseline, Motif's SDK or agent-readable CLI for image work, product orchestration in a repo-localaioragentspackage, and MCP in its own package only when the product genuinely exposes it.
docs/reference/agent-workflow.md defines what a root AGENTS.md should cover. Other decisions live in docs/reference/; deviations live in docs/adr/.
Generated surfaces - never hand-edit
docs/principles.mdis generated fromsrc/content/principles.tsbypnpm generate:principles. The homepage renders the same module, so they can't drift.skills/scaffold/references/is generated fromdocs/bypnpm sync:skill. Edit docs once, then run the sync.pnpm checkruns both with--checkand fails on drift, so a docs edit without a regenerate breaks the gate.
Editing this repo
- Don't turn scaffold docs into guidance for one repo. If it only applies to one project, it belongs in that project's
AGENTS.md. - Don't vendor independent skills into product repos; link or install them.
- Search
docs/reference/before adding new baseline policy, and search existing pages before creating a new one. - Search
CONTEXT.mdbefore changing the terms Scaffold Baseline, Project Docs, Agent Skill, Agent Skill Distribution or Skill Wrapper. - Don't add runtime dependencies unless the docs or skill distribution genuinely needs them.
- Write short, declarative prose. Cut scene-setting, recaps, fake contrasts, vague praise, and claims without evidence.
- Prefer a paragraph or short list to a table unless exact comparison is the point.
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 · 44 lines · 711 tokens per session scan A e0d33d05d0c4
scaffold AGENTS.md is an instructions file published in the GitHub repository howells/scaffold (2 stars, last pushed 7d ago), licensed MIT. It adds 711 tokens to every session, about $0.0036 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 2026-08-31.
Other instructions, from other repositories
liam AGENTS.md
Instructions for liam-hq/liam, covering repository guidelines, project structure & modules, build, test, and development, coding style & naming and testing guidelines.
core copilot-instructions.md
Instructions for asdecided/core: These decisions are already accepted. Do not re-open or contradict them; ask the AsDecided MCP tools (getartifact, searchartifacts) for the full text before proposing a change that touches one.
spec-driven-development-template copilot-instructions.md
Instructions for juanklagos/spec-driven-development-template, a project described as: Operational SDD framework with AI guidance, GitHub Spec Kit workflows, and MCP support.
slideops CLAUDE.md
Instructions for glukicov/slideops, covering claude.md, what this repository is, commands, the demo deck's citations must still match this repo and the citation mechanism (the core idea).
valuein AGENTS.md
AGENTS.md instructions for valuein/valuein, covering agents.md — valuein public oss hub, project, what valuein is, default install + first query (use this verbatim) and either workflow — both work in any virtual environment.
proofpress AGENTS.md
The Governance Layer for Agent-Produced Knowledge.