sdd-steering

sdd-steering is a skill for Claude Code, Codex from felipefontoura/pi-sdd-kit. It costs 63 tokens per session (967 once invoked), scanned A, original, MIT.

A set of reusable project-guidance documents stored in `.ai/steering/`. They record the product context, technology stack, coding conventions, principles, and domain rules that an AI assistant should follow.

In plain words
What is it for?
Use it to create or update project-wide guidance for product decisions, technologies, conventions, and domain rules. It is not for defining the requirements of one specific feature.
Why use it?
It prevents the assistant from having to rediscover stable project context in every task. It also helps keep shared guidance accurate, with confirmation required before durable project-wide changes are saved.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to create or update project-wide guidance for product decisions, technologies, conventions, and domain rules. It is not for defining the requirements of one specific feature.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/felipefontoura/pi-sdd-kit/sdd-steering
Install

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.

Any agent
npx skills add felipefontoura/pi-sdd-kit --skill sdd-steering
Clone the repo
git clone --depth 1 https://github.com/felipefontoura/pi-sdd-kit

Made for: Claude Code, Codex.

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 sdd-steering

README.md
[![agentmods](https://agentmods.dev/badge/skills/felipefontoura/pi-sdd-kit/sdd-steering/github.svg)](https://agentmods.dev/skills/felipefontoura/pi-sdd-kit/sdd-steering)
Your own site
<a href="https://agentmods.dev/skills/felipefontoura/pi-sdd-kit/sdd-steering"><img src="https://agentmods.dev/badge/skills/felipefontoura/pi-sdd-kit/sdd-steering/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.

agentmods 80×15 button for sdd-steering

Your own site · 80×15
<a href="https://agentmods.dev/skills/felipefontoura/pi-sdd-kit/sdd-steering"><img src="https://agentmods.dev/badge/skills/felipefontoura/pi-sdd-kit/sdd-steering.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 967 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.
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 $0.00063 $0.00967
Opus 5 $0.00032 $0.00483
Sonnet 5 $0.00013 $0.00193
Haiku 4.5 $0.00006 $0.00097

Measured 10d ago against content hash 60849eaf5fb6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

sdd-steering 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 10d 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.

skills/sdd-steering/SKILL.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AI Steering

Create or update reusable project context in .ai/steering/.

Purpose

Steering documents capture stable project guidance that many skills can reuse. They are not SDD feature artifacts; they describe the broader product, stack, principles, conventions, and domain rules that should guide IDEA, PLAN, PRD, SPEC, TASKS, EXEC, REVIEW, and other AI workflows. Because steering is durable project-wide context, draft freely but confirm before saving or changing global guidance.

Workflow

  1. Load references.

    • Read ../_shared/references/sdd-practical.md.
    • Apply the Language Policy: respond and write artifacts in the user's initial chat language while keeping skill instructions and templates in EN-US.
    • Read ../_shared/references/templates.md when drafting artifacts.
    • Use package-level templates/steering-*.md files as user-facing examples when available.
  2. Establish the steering workspace.

    • Use .ai/steering/.
    • Create .ai/steering/ if it does not exist.
    • Read existing .ai/steering/*.md before changing them.
    • Briefly inspect project README, package files, docs, and source tree when useful.
  3. Determine which steering docs are needed.

    • product.md for product vision, users, value, boundaries, success metrics, glossary.
    • tech-stack.md for runtime, frameworks, libraries, infrastructure, verification commands, constraints.
    • conventions.md for code style, architecture patterns, naming, testing, accessibility/security, workflow.
    • principles.md for project principles, MUST/SHOULD rules, decision rules, review expectations, and governance-like guidance.
    • Domain-specific docs such as lp.md, payments.md, brand.md, or content.md when the user wants reusable guidance for a specific workflow.
  4. Clarify missing context.

    • Ask one question at a time.
    • Prefer multiple-choice questions when useful.
    • Do not over-interrogate; use existing project evidence when reliable.
    • Mark uncertain items as Open Questions rather than inventing durable rules.

Read the full file on GitHub · 83 lines

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. 10d ago First seen · 83 lines · 63 tokens per session scan A 60849eaf5fb6

Subscribe to this mod's changes

sdd-steering is a skill published in the GitHub repository felipefontoura/pi-sdd-kit (23 stars, last pushed 2mo ago), licensed MIT. It adds 63 tokens to every session and 967 once invoked, about $0.0003 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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