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Every resource founders actually use, in one library.

The essays, videos, podcasts, books and tools behind every answer across eChai's hubs, from starting up to go-to-market, D2C, founder money and AI, each with a note on why it is here.

What founders use most, ranked by how many answers lean on it.

  1. The pattern catalogue (routing, orchestrator, evaluator) that outlives any framework. resources.anthropic.com Guide · How Founders Use AI Building Effective AI Agents: Architecture Patterns and Implementation Frameworks Anthropic
  2. A free short course on the most minimal serious agent framework. deeplearning.ai Course · How Founders Use AI Building Code Agents with Hugging Face smolagents DeepLearning.AI + Hugging Face
  3. The no-code side of the decision, compared honestly on price and power. digidop.com Article · How Founders Use AI n8n vs Make vs Zapier: which automation tool? Digidop
  4. A rival platform's surprisingly fair breakdown of the two power-user tools. zapier.com Article · How Founders Use AI n8n vs. Make: which is best? Zapier
  5. Helps you pick by team skill level rather than feature checklists. flowmondo.com Article · How Founders Use AI n8n vs Zapier vs Make: which is right for you Flowmondo
  6. Video · How Founders Use AI Agentic AI Frameworks Explained: Workflows, Multi-Agent, & Production IBM Technology
  7. Demystifies the harness, the code around the agent that makes it dependable. lennysnewsletter.com Podcast · How Founders Use AI How I AI: What an agent harness is and how to build one How I AI (Lenny's network)
  8. Condenses Anthropic's build guidance into checklist form. maryammiradi.com Article · How Founders Use AI Build AI Agents: 40 Key Lessons from Anthropic's Masterclass Maryam Miradi
  9. The full course repo covering smolagents, LlamaIndex and LangGraph side by side. github.com Tool · How Founders Use AI Hugging Face Agents Course (GitHub) Hugging Face
  10. An India-based roundup of free certified learning paths per framework. analyticsvidhya.com Article · How Founders Use AI 15 Free Courses on AI Agents with Certificates Analytics Vidhya
  11. A quick no-code vs code triage before you commit a weekend. easyclaw.com Article · How Founders Use AI How to Build AI Agents: 5 Best Platforms EasyClaw
  12. Names the paradox every founder hits: cheaper tokens, bigger bills. navyaai.com Article · How Founders Use AI AI Token Cost Over Time: Down 99.7%, Bills Up 3x NavyaAI
  13. Explains the quadratic context growth that quietly multiplies agent costs. leanopstech.com Article · How Founders Use AI AI Agents Burn 50x More Tokens Than Chats LeanOps
  14. How large buyers model agent economics, useful when selling to them. ey.com Article · How Founders Use AI Agentic AI Enterprise Token Cost EY
  15. Concrete per-task cost ranges from cheap chatbot turns to $5+ agent runs. cowork.ink Article · How Founders Use AI AI Agent Cost: Token Economics & Optimization Guide Cowork
  16. Walks through the exact math of an agent whose unit economics collapse. medium.com Article · How Founders Use AI Token Cost Trap: Why Your AI Agent's ROI Breaks at Scale Klaus Hofenbitzer
  17. One page comparing how each provider's caching discount actually works. prompthub.us Guide · How Founders Use AI Prompt Caching with OpenAI, Anthropic, and Google Models PromptHub
  18. Estimate a task's cost across models before you commit to one. tokencalculator.ai Tool · How Founders Use AI AI Token Calculator TokenCalculator
  19. Live per-model pricing so your cost model never goes stale. usagepricing.com Tool · How Founders Use AI AI Token Pricing Tracker UsagePricing
  20. Shows 72% of production cost sits outside the model invoice. optimumpartners.com Article · How Founders Use AI AI Token Costs: Why Enterprise AI Bills Keep Rising Optimum Partners
  21. A hands-on implementation guide with before-and-after cost numbers. digitalocean.com Guide · How Founders Use AI Prompt Caching for Anthropic and OpenAI Models DigitalOcean
  22. Investors debate agent pricing and unit economics in plain language. open.spotify.com Podcast · How Founders Use AI What Is an AI Agent? (pricing and economics discussion) a16z
  23. Saves you from the premature self-host-a-model cost trap. ml6.eu Article · How Founders Use AI Why 'Cheaper Tokens' Isn't a Good Reason to Own Your LLMs ML6
  24. Why the price curve should keep falling, and what that means for your roadmap. weightythoughts.com Article · How Founders Use AI AI's Plummeting Prices Are a Software Story, Not a Hardware One Weighty Thoughts

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The hubs

Starting Up Find an idea, validate it, build, and land your first customers. 1046 questions GTM Go-to-market, from breaking in to how the best teams do it. 352 questions D2C Building a direct-to-consumer brand, India-first. 482 questions Wealth Paying yourself, ESOPs, secondaries, and de-risking founder wealth. 154 questions How Founders Use AI How founders actually put AI to work, mapped topic by topic. 278 questions Glossary Plain-language definitions of the startup and VC terms you'll hit. 390 terms
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