pi-agent-codebase-workflows

Pi package with skills and prompt templates for safe greenfield starts, documented-codebase changes, reconstruction, and reviews.

Credits: built for pi, created by Mario Zechner (GitHub: @badlogic, X: @badlogicgames) and the Earendil Works team (@earendil-works).

Included skills

• safe-start — create new projects safely with data-first design, project-agent docs, minimal scaffold, validation baseline, and first thin vertical slice.
• codebase-recon — reconstruct durable project understanding into docs/agent/*.md plus project-root AGENTS.md.
• arch-code-review — review current diffs against documented architecture, invariants, data model, dependency rules, risks, and tests.
• safe-change — preflight, design/diagnosis, implementation, validation, and semantic docs update workflow for safe code changes.

Usage docs

• Tutorial — end-to-end workflows for small repos, monorepos, scoped reconstruction, safe changes, reviews, consolidation, and legacy docs.
• Troubleshooting — common reconstruction, scoping, contract, review, and validation issues.

Included prompt templates

Reconstruction:

• /recon-all
• /recon-01-inventory
• /recon-02-architecture
• /recon-03-data-invariants
• /recon-04-dependency-rules
• /recon-05-risk-register
• /recon-06-agents
• /recon-07-change-guide
• /recon-08-consolidate
• /recon-09-adr
• /recon-10-risk-tests

Safe-start workflow:

• /safe-start-all
• /safe-start-01-intent
• /safe-start-02-data-flow
• /safe-start-03-architecture
• /safe-start-04-contract-docs
• /safe-start-05-scaffold-plan
• /safe-start-06-validation
• /safe-start-07-vertical-slice
• /safe-start-08-handoff

Safe-change workflow:

• /preflight
• /bug-diagnose
• /bug-implement
• /feature-design
• /feature-implement
• /refactor-design
• /refactor-implement
• /risk-fix
• /review-arch

Install

From git after repository is published:

pi install git:github.com/PriNova/pi-agent-codebase-workflows

From npm after package is published:

pi install npm:pi-agent-codebase-workflows

Local development/test:

pi install /absolute/path/to/pi-agent-codebase-workflows
# or one-off
pi -e /absolute/path/to/pi-agent-codebase-workflows

Focus/scoping arguments

Reconstruction prompts accept optional [focus] arguments. Use them to scope analysis to a module, package, app, service, directory, or bounded domain area, especially in monorepos.

Example:

/recon-01-inventory packages/api
/recon-02-architecture apps/mobile auth flow
/recon-all services/billing

Without focus, reconstruction writes the traditional top-level docs/agent/*.md artifacts. With focus, reconstruction writes hierarchical scoped artifacts and updates docs/agent/SCOPES.md:

docs/agent/
  SCOPES.md
  scopes/
    by-path/packages/api/
      README.md      # optional local index for large/complex scopes
      ARCHITECTURE.md
      CONTRACTS.md
    by-domain/auth-flow/
      README.md      # optional local index for large/complex scopes
      ARCHITECTURE.md
      CONTRACTS.md

Top-level docs remain valid as repo-level summaries/fallbacks. This is backward-compatible with repositories reconstructed before scoped artifacts existed. Later /recon-08-consolidate can reconcile multiple scoped artifacts into repo-level guidance.

Safe-change and review workflows read SCOPES.md when present, match path scopes by longest prefix, and follow scoped CONTRACTS.md links for cross-module APIs, shared types, schemas, events, generated clients, and persistence boundaries.

Review and risk-fix prompts also accept scope/focus arguments for targeted reviews or fixes.

Artifact locations

Skills write durable project-agent docs under:

docs/agent/
docs/agent/scopes/**

Project operating instructions stay at project root:

AGENTS.md

The workflows intentionally avoid docs/AGENTS.md and docs/agent/AGENTS.md.

Package structure

skills/
  safe-start/SKILL.md
  codebase-recon/SKILL.md
  arch-code-review/SKILL.md
  safe-change/
    SKILL.md
    references/*.md
prompts/
  *.md

Pi discovers these through the pi.skills and pi.prompts entries in package.json.