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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. A step-by-step Docker setup an ops-minded founder can follow in an evening. opstree.com Guide · How Founders Use AI The Ultimate Guide to Postgres MCP for Claude Desktop OpsTree
  2. The fastest no-code path if you just want to ask your database questions today. windsor.ai Guide · How Founders Use AI How to Connect PostgreSQL to Claude in 1 Minute (No-Code MCP) Windsor.ai
  3. A first-person build log with the mistakes left in, useful for realistic expectations. medium.com Article · How Founders Use AI Building My First MCP Server: Connecting Claude to PostgreSQL Umar M
  4. Compares the field including which tools process metadata only, a key privacy line. text2sql.ai Article · How Founders Use AI Best SQL AI Tools in 2025: Complete Comparison Guide Text2SQL.ai
  5. Engineers debating where text-to-SQL breaks, the caveats vendors won't tell you. news.ycombinator.com Thread · How Founders Use AI Vanna.ai: Chat with your SQL database (Hacker News discussion) Hacker News
  6. Explains non-determinism: why even temperature zero runs differ, and what to do about it. chattermill.com Article · How Founders Use AI Why ChatGPT and Claude Give You Different Answers Every Time You Analyze Feedback Chattermill
  7. Concrete failure cases like '40% growth' that was actually 14%, and the guardrails. databox.com Article · How Founders Use AI How to Prevent AI Hallucinations: 3 Hidden Threats When AI Analyzes Your Data Databox
  8. A clear-eyed look at where LLM analysis of real datasets goes wrong. verbagpt.com Article · How Founders Use AI On Accuracy When LLMs Analyze Real-World Data VerbaGPT
  9. Aggregated hallucination-rate data so you calibrate trust per task type. sqmagazine.co.uk Article · How Founders Use AI LLM Hallucination Statistics 2026 SQ Magazine
  10. Current model-by-model hallucination benchmarks to inform your tool choice. suprmind.ai Article · How Founders Use AI Which AI Hallucinates Least? Benchmark Rates Data Suprmind
  11. The research grounding for why code execution and grounding beat raw chat answers. arxiv.org Guide · How Founders Use AI Beyond Fine-Tuning: Strategies for Mitigating Hallucinations in LLMs for Data Analytics arXiv (research paper)
  12. Practical mitigation patterns including cross-model disagreement checks. knostic.ai Article · How Founders Use AI Solving the Very-Real Problem of AI Hallucination Knostic
  13. Models the exact behavior you should copy: spot checks even when output looks perfect. x.com Thread · How Founders Use AI Ethan Mollick: testing ChatGPT and Claude on a brutally hard Excel file Ethan Mollick
  14. Documents where a dedicated AI analyst tool hallucinates plausible numbers on complex stats. letdataspeak.com Article · How Founders Use AI Julius AI Review: Is It Worth It for Data Analysts? Let Data Speak
  15. The verification argument: if you can't verify generated analysis, you can't use it. learnsql.com Article · How Founders Use AI Why Learning SQL Beats Relying on AI: Understanding Data Still Matters LearnSQL.com
  16. Production-grade prevention patterns once AI analysis becomes routine at your startup. alicelabs.ai Article · How Founders Use AI LLM Hallucination: What It Is and How to Prevent It in Production Alice Labs
  17. Google's central answer on Workspace data and Gemini training. knowledge.workspace.google.com Guide · How Founders Use AI Generative AI in Google Workspace Privacy Hub Google Workspace
  18. Confirms Sheets content is not used to train Gemini, the question founders ask most. support.google.com Guide · How Founders Use AI How Gemini in Gmail, Docs, Drive and Sheets protects your data Google
  19. The document to forward to an enterprise customer who asks about your AI usage. workspace.google.com Guide · How Founders Use AI Gemini security, privacy and compliance whitepaper Google Workspace
  20. Covers the shadow-AI problem: employees pasting company data into personal accounts. intuitionlabs.ai Article · How Founders Use AI ChatGPT Data Security: Preventing Proprietary Data Leaks IntuitionLabs
  21. A CISO-style audit you can run on yourself in an afternoon. reco.ai Article · How Founders Use AI How Do I Find Out If ChatGPT Has Access to Our Company Data? Reco
  22. The legal-basis view: when uploading personal data becomes a compliance violation. docuflair.com Article · How Founders Use AI ChatGPT & Sensitive Data: How to Keep Your Business GDPR-Safe Docuflair
  23. The risk-side view of Gemini for teams already deep in Google Workspace. concentric.ai Article · How Founders Use AI Is Gemini Safe? Guide to Security and Privacy Risks Concentric AI
  24. Where the no-training, SOC 2, encrypted-everything commitments were first made. openai.com Article · How Founders Use AI Introducing ChatGPT Enterprise OpenAI

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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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