ContentSeed

ContentSeed is a client-side content repurposing app built with React, TypeScript, and Vite. It helps turn one technical post into platform-specific drafts for X/Twitter, LinkedIn, Reddit, and Substack.

Features

• Platform-native generation for:
  • Twitter/X (thread-style output)
  • LinkedIn
  • Reddit
  • Substack
• Multi-provider support: Anthropic, OpenAI, and Gemini
• Demo mode with sample post + pre-generated outputs (no API key required)
• Quick edit controls:
  • Tone: Casual, Professional, Technical, Storytelling
  • Length: Shorter, Default, Longer
  • Hashtags: on/off
  • Emojis: on/off
• Per-platform actions:
  • Copy
  • Copy all
  • Regenerate
  • Export
• Export options:
  • PNG
  • JPG
  • PDF (single or all-platform output)
• Privacy-first architecture:
  • No backend
  • No telemetry
  • API keys stored locally (with client-side encryption)

Demo

• In-app demo:
  • Click Try Demo on landing, or
  • Click Try Sample Post in the app
  • This loads sample content and demo outputs without calling any LLM API.
• YouTube demo:
  • https://youtu.be/g5sFvgP0W1M

How It Works

1. Parse markdown into structure (headings, paragraphs, code, key points).
2. Apply platform-specific prompt templates.
3. Generate output via selected provider.
4. Refine with quick-edit controls and export in shareable formats.

Project Status

• Active pre-1.0 development.
• Contributions are welcome for docs, bug fixes, and tests.
• No backward compatibility guarantee before v1.0.0 (breaking changes will be called out in release notes).

Requirements

• Node.js 20+ (LTS recommended)
• pnpm 10+

Quick Start

pnpm install
cp .env.example .env
pnpm dev

Open http://localhost:5173.

Environment Variables

ContentSeed uses .env / .env.example for provider selection, model switching, and local URLs.

Variable	Purpose	Default
VITE_APP_URL	App base URL used by frontend config	http://localhost:5173
PLAYWRIGHT_BASE_URL	Base URL for Playwright use.baseURL and webServer.url	http://localhost:5173
VITE_DEFAULT_PROVIDER	Provider used when no browser-stored config exists (anthropic, openai, gemini)	anthropic
VITE_ANTHROPIC_MODEL_FAST	Anthropic model for fast mode	claude-sonnet-4-6-20250514
VITE_ANTHROPIC_MODEL_BALANCED	Anthropic model for balanced mode	claude-sonnet-4-6-20250514
VITE_ANTHROPIC_MODEL_QUALITY	Anthropic model for quality mode	claude-sonnet-4-6-20250514
VITE_OPENAI_MODEL_FAST	OpenAI model for fast mode	gpt-5.2
VITE_OPENAI_MODEL_BALANCED	OpenAI model for balanced mode	gpt-5.2
VITE_OPENAI_MODEL_QUALITY	OpenAI model for quality mode	gpt-5.2
VITE_GEMINI_MODEL_FAST	Gemini model for fast mode	gemini-3.0-pro
VITE_GEMINI_MODEL_BALANCED	Gemini model for balanced mode	gemini-3.0-pro
VITE_GEMINI_MODEL_QUALITY	Gemini model for quality mode	gemini-3.0-pro
VITE_ANTHROPIC_API_KEY	Optional Anthropic key fallback when no saved key exists	empty
VITE_OPENAI_API_KEY	Optional OpenAI key fallback when no saved key exists	empty
VITE_GEMINI_API_KEY	Optional Gemini key fallback when no saved key exists	empty

Security Note for API Keys

Any VITE_* environment variable is exposed to the client bundle by Vite. Use the fallback key variables only for local development convenience, not for production secrets.

Development Commands

pnpm lint
pnpm test
pnpm test:e2e:smoke
pnpm test:e2e

If Playwright browsers are missing locally:

pnpm exec playwright install chromium

Contributing

See CONTRIBUTING.md for workflow, DCO signoff requirements, and review expectations.

Current Scope

• Intended for technical content repurposing workflows.
• Best results come from well-structured markdown input.
• Pre-v1.0.0: prompts, output formats, and behavior can change.

Security

See SECURITY.md for responsible disclosure instructions.

Support

See SUPPORT.md for where to ask questions and how to report issues.

License

MIT