Imported from byigitt/postmaker-x (AGENTS.md). Install upstream with npx skills add byigitt/postmaker-x. Copyright stays with the author.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

PostMaker X is a pnpm monorepo for optimizing X (Twitter) posts based on algorithm research. It analyzes post content against engagement signals and provides AI-powered suggestions using Gemini.

Commands

# Install dependencies
pnpm install

# Typecheck all packages (run after implementation)
pnpm tc

# Build all packages
pnpm build

# Build shared package (required before other packages if types changed)
pnpm build:shared

# Run individual typechecks
pnpm tc:web
pnpm tc:api

# Database operations (PostgreSQL via Drizzle)
pnpm db:push      # Push schema changes
pnpm db:studio    # Open Drizzle Studio

Architecture

Monorepo Structure

postmaker-x/
├── apps/
│   ├── web/          # Vite + React + TailwindCSS frontend
│   └── api/          # Express + TypeScript backend
└── packages/
    └── shared/       # Shared types, constants, algorithm weights

Shared Package (@postmaker/shared)

All shared types and constants live here. Both apps import from it:

• types/ - PostAnalysis, EngagementScores, ContentMetrics, Suggestion, Warning, Template, Timing
• constants/weights.ts - Scoring weights based on X algorithm (ENGAGEMENT_WEIGHTS, CONTENT_WEIGHTS, OPTIMAL_LENGTH, LIMITS)
• constants/algorithm.ts - Algorithm constants

Important: Run pnpm build:shared after modifying shared package before other packages can use changes.

API (@postmaker/api)

Express server on port 3001 with routes:

• POST /api/analyze - Analyze post content
• POST /api/generate - Generate posts via Gemini AI
• GET /api/templates - Post templates
• GET /api/timing/* - Posting time recommendations

Key services:

• services/gemini/ - Gemini AI integration (gemini-1.5-flash model)
• services/analyzer/ - Post analysis against algorithm signals
• services/scorer.ts - Scoring calculations
• services/optimizer/ - Post optimization suggestions
• db/schema.ts - Drizzle PostgreSQL schema (posts, analysisHistory, templates)

Web (@postmaker/web)

React SPA with pages:

• / (Home) - Post analyzer
• /threads - Thread creator
• /timing - Timing optimizer
• /templates - Template library

State management:

• @tanstack/react-query for server state
• zustand for client state (stores/post.ts with localStorage persistence)

API client: lib/api.ts - typed fetch wrapper

UI components: Custom components in components/ui/ (no external component library)

Data Flow

1. Frontend calls api.analyze(content) via React Query hooks
2. API analyzes content against algorithm weights from @postmaker/shared
3. Returns PostAnalysis with scores, metrics, suggestions, warnings
4. Frontend displays via Zustand store and UI components

Environment

API requires:

• DATABASE_URL - PostgreSQL connection string
• GEMINI_API_KEY - For AI features (optional, features degrade gracefully)