tachi: Skill for Claude Code

.claude/skills/aod-foundation/SKILL.md

aod-foundation is a skill for Claude Code from davidmatousek/tachi. It costs 98 tokens per session (5,530 once invoked), scanned A, original, Apache-2.0.

A guided workshop for setting a product's vision and design identity. It creates a product-vision document and brand files such as design tokens, which are named values for colors, spacing, and other styles.

In plain words
What is it for?
Use it after project initialization to answer vision questions, choose a design archetype, and generate vision, brand, token, and anti-pattern files.
Why use it?
It replaces placeholder project guidance with agreed product direction and reusable design rules.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: reads .claude/ paths; mentions CLAUDE.md; names the AskUserQuestion tool.

This is davidmatousek/tachi's own configuration. It tells Claude Code how to work on tachi itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything tachi configures →

Reuse

Borrowing it

Nothing to install: this file belongs to davidmatousek/tachi. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/davidmatousek/tachi/main/.claude/skills/aod-foundation/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/davidmatousek/tachi

Made for: Claude Code.

Wrote 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.

agentmods badge for aod-foundation

README.md
[![agentmods](https://agentmods.dev/badge/skills/davidmatousek/tachi/aod-foundation.svg)](https://agentmods.dev/skills/davidmatousek/tachi/aod-foundation)
Your own site
<a href="https://agentmods.dev/skills/davidmatousek/tachi/aod-foundation"><img src="https://agentmods.dev/badge/skills/davidmatousek/tachi/aod-foundation.svg" alt="Measured on agentmods" height="20"></a>
Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,530 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00098 $0.05530
Opus 5 $0.00049 $0.02765
Sonnet 5 $0.00020 $0.01106
Haiku 4.5 $0.00010 $0.00553

Measured 8d ago against content hash 7afe38152eb1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

aod-foundation 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 8d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/skills/aod-foundation/SKILL.md · 533 lines

How it starts

The opening of the file, as written. The whole thing — 533 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/aod.foundation Skill

Purpose

Guided post-init workshop with two parts:

  • Part 1 (Vision): 5 storytelling-arc questions that populate product-vision.md
  • Part 2 (Design): Archetype browser that generates brands/{project-name}/ files

Run after make init to replace placeholder markers with real content.


Step 0: Parse Flags

Parse --vision and --design flags from the user's arguments.

  1. If arguments contain --vision:
    • Set vision_only = true
    • Strip --vision from arguments
  2. If arguments contain --design:
    • Set design_only = true
    • Strip --design from arguments
  3. If neither flag is present:
    • Set run_both = true (full workshop)
  4. If both flags are present:
    • Treat as run_both = true (equivalent to no flags)

Step 1: State Detection

Detect the current project state to determine which parts to activate and whether this is a first-run or re-run.

1a: Derive Project Name

Use this ordered fallback to determine {project-name}:

  1. Repository directory name: Run basename $(git rev-parse --show-toplevel) — use this if it yields a non-empty value
  2. CLAUDE.md PROJECT_NAME: Read CLAUDE.md, grep for a line matching PROJECT_NAME that does NOT contain {{PROJECT_NAME}} (the un-replaced placeholder). Extract the value.
  3. AskUserQuestion fallback: If neither source yields a usable name, ask: "What is your project name?" with a text input.

Sanitize the derived name to kebab-case: lowercase, replace spaces/underscores with hyphens, strip non-alphanumeric/non-hyphen characters.

Store as project_name for use throughout the workshop.

1b: Check Vision State

Read docs/product/01_Product_Vision/product-vision.md:

  • If the file does not exist: Set vision_state = "missing" — Part 1 will create from scratch
  • If the file contains [To be refined or [To be defined: Set vision_state = "placeholder" — Part 1 activates normally
  • If the file exists with no placeholder markers: Set vision_state = "populated" — Part 1 enters re-run mode

Read the full file on GitHub · 533 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 8d ago First seen · 533 lines · 98 tokens per session scan A 7afe38152eb1

Subscribe to this mod's changes

aod-foundation is a skill published in the GitHub repository davidmatousek/tachi (90 stars, last pushed 26d ago), licensed Apache-2.0. It adds 98 tokens to every session and 5,530 once invoked, about $0.0005 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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