karpathy-coder

Active coding discipline enforcer based on Karpathy's 4 principles: surface assumptions, keep it simple, make surgical changes, define verifiable goals. Ships 4 Python tools (complexity_checker, diff_surgeon, assumption_linter, goal_verifier), a review agent, /karpathy-check slash command, and a pre-commit hook. All tools stdlib-only.

BMAD-Method Agentic SDLC

Spec-driven, artifact-first software delivery for deep agents.

BMAD-Method Agentic SDLC is a layered software development lifecycle for agentic delivery. It uses Claude Code agents, specialist personas, BMAD skills, commands, and optional deterministic workflows to take software work from idea discovery through PRD, architecture, evaluation, story implementation, QA review, and delivery.

This repository is not primarily a website or app. Generated apps, app/, and sandbox/ are working surfaces and experiments. The core product is the agentic SDLC system.

At A Glance

Layer	Role	Examples
Agent teams	Own lifecycle phases and specialist perspectives	`cs-engineering-lead`, `cs-planning-lead`, `code-reviewer`
Skills	Execute repeatable methods and quality gates	`bmad-prd`, `bmad-dev-story`, `bmad-testarch-nfr`
Commands	Provide user-facing entry points	`/cs:workflow-build`
Artifacts	Carry context across phase boundaries	`prd.md`, `.decision-log.md`, `sprint-status.yaml`
Workflow automation	Makes repeatable multi-agent runs deterministic	`.claude/workflows/*.js`

Lifecycle

flowchart TD
  U[User goal, raw idea, or artifact paths] --> L[cs-engineering-lead]

  L --> R[Phase 1: Research and discovery]
  R --> P[Phase 2: PRD and requirements planning]
  P --> A[Phase 3: Architecture, stories, readiness]
  A --> E[Phase 4: Story implementation]
  E --> Q[Phase 5: Independent QA review]
  Q --> D[Final delivery digest]

  R -. owns .-> RL[cs-brainstorm-research-lead]
  P -. owns .-> PL[cs-planning-lead]
  A -. owns .-> PL
  E -. routed by .-> L
  Q -. dispatched by .-> L

  D --> NX[Next handoff or release decision]

The lifecycle is intentionally gated. Agents do not just chat toward code; they create artifacts, hand them off, verify them, and keep implementation tied to specs and acceptance criteria.

Phase Map

Phase	Coordinator	Specialists	Primary Skills	Output Artifacts
1. Research and discovery	`cs-brainstorm-research-lead`	`cs-market-researcher`, `cs-tech-researcher`, `cs-problem-solver`, `cs-innovation-strategist`, `cs-visual-researcher`, `cs-concept-synthesizer`, plus `cs-design-thinker` / `cs-ideation-strategist` when interactive facilitation is needed	`bmad-brainstorming`, `bmad-market-research`, `bmad-domain-research`, `bmad-technical-research`, `bmad-prfaq`, `bmad-product-brief`	Locked problem and ICP, alternatives, evidence, wedge, risks, assumptions, validation test, visual manifest when applicable
2. PRD and requirements planning	`cs-planning-lead`	`cs-concept-to-prd-planner`, `cs-requirements-architect`, `cs-prd-work-planner`, `cs-evaluation-architect`, `cs-prd-quality-reviewer`, `cs-epic-story-planner`	`bmad-prd`, `bmad-ux`, `bmad-testarch-test-design`, `bmad-testarch-nfr`, `bmad-review-edge-case-hunter`	`prd.md`, `addendum.md`, `.decision-log.md`, FR/NFR/UJ IDs, evaluation spine, open questions
3. Architecture, stories, readiness	`cs-planning-lead`	Planning specialists plus architecture and story workflows	`bmad-create-architecture`, `bmad-agent-architect`, `bmad-create-epics-and-stories`, `bmad-create-story`, `bmad-story-automator-review`, `bmad-check-implementation-readiness`, `bmad-sprint-planning`, `bmad-sprint-status`	Architecture artifacts, ADR/design decisions, epics, ready-for-dev stories, `sprint-status.yaml`, readiness verdict
4. Story implementation	`cs-engineering-lead`	`cs-frontend-engineer`, `cs-backend-engineer`, `cs-fullstack-engineer`, `cs-senior-engineer`, `cs-karpathy-reviewer`	`bmad-dev-story`, `bmad-code-review`, `bmad-quick-dev`, `bmad-testarch-atdd`, `bmad-testarch-trace`, `bmad-testarch-test-review`, `bmad-checkpoint-preview`	Changed files, tests/checks run, implementation notes, file list, story status moved to review
5. Independent QA review	`cs-engineering-lead`	`code-reviewer`, `security-auditor`, `test-engineer`, `web-performance-auditor`	`code-review-and-quality`, `security-and-hardening`, `test-driven-development`, `performance-optimization`, `browser-testing-with-devtools`	Findings by severity, coverage gaps, security risks, performance risks, approve/request-changes verdict

Detailed Flow

Phase 1: Research and discovery

karpathy-coder

Popularity

What's Inside

README

BMAD-Method Agentic SDLC

At A Glance

Lifecycle

Phase Map

Detailed Flow

Confidence

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