sdlc-rules

A guided workflow for writing business rules and example scenarios that define what a software feature must do before it is built. It records rules as BR-NN entries and scenarios as SCEN-NN entries for later acceptance checks and evaluations.

In plain words
What is it for?
Use it to interview stakeholders, document decision tables, create golden scenarios, and place the resulting requirements artifacts in an SDLC project or a standalone repository.
Why use it?
It turns vague requirements into explicit decisions and examples, reducing uncertainty about what counts as correct.

Command

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.

agentmods
npx agentmods add commands/mckruz/claude-code-sdlc/sdlc-rules
Clone the repo
git clone --depth 1 https://github.com/MCKRUZ/claude-code-sdlc
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,137 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.01137
Opus 5 $0.00000 $0.00568
Sonnet 5 $0.00000 $0.00227
Haiku 4.5 $0.00000 $0.00114

Measured 2d ago against content hash e04ff685ffb3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sdlc-rules 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.

commands/sdlc-rules.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/sdlc-rules — Author Business Rules and Golden Scenarios

Give Bizreq a first-class drafting seat: the business rules (a BR-NN decision table) and the golden scenarios (SCEN-NN) that pin down what "correct" means before anyone builds. Each BR-NN becomes an Acceptance Check on the spec (advisory / soft traceability); each SCEN-NN seeds the golden set at /sdlc-evals. Interview-driven like /sdlc-coach: the bizreq-analyst agent assesses what's there, asks focused questions, and drafts as answers arrive. It proposes; a named human decides (the One Rule). Works inside an SDLC project or standalone.

Instructions

  1. Resolve context:

    • Workflow mode (default): .sdlc/state.yaml exists. Read the requirements, feature-brief, and any intake corpus (DOC-NNN summaries) for the policy source; outputs land in .sdlc/artifacts/01-requirements/.
    • Standalone mode (--repo <path>, or no .sdlc/ found): operate on the given repo with provisional context; write to --output (default alongside the repo) and note the missing context in the artifact headers.
  2. Assess what exists: Read the requirements and any policy documents. Identify the decision points the feature must get right and the scenarios that would prove it — and where the policy is silent or contradictory (a contradiction is a candidate decision-log item, not a guessed rule).

  3. Run the interview: Spawn the bizreq-analyst agent (Bizreq discipline). It runs the coach-style dialogue — the conditions, outcomes, and approver for each rule; the source policy each rule cites; and the representative scenarios (including the tricky/ambiguous ones). It drafts two files from the templates in templates/phases/01-requirements/:

    • business-rules.md — the BR-NN decision table (condition → outcome → source → approver).
    • golden-scenarios.md — the SCEN-NN table (input → expected behavior).
  4. Confirm the rules and route open questions with the human:

Read the full file on GitHub · 72 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. 2d ago First seen · 72 lines · 0 tokens per session scan A e04ff685ffb3

Subscribe to this mod's changes

sdlc-rules is a command published in the GitHub repository MCKRUZ/claude-code-sdlc (4 stars, last pushed 4d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,137 tokens. 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.