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Startup ideas from real problems: field notes

Practical guides for founders who would rather solve a real problem than chase a thesis: where to find problems to solve for a startup, how to validate an idea in a weekend, and how to build AI products that survive real users. Written alongside our directory of 100 scored startup problems. Every post was refreshed with current facts on 18 October 2026.

Find and validate an idea

How to Validate a Startup Idea Before You Write Any Code

Updated 2026-10-18 · 11 min read

A 5-axis rubric, the five-names test, and a Friday-to-Sunday plan that ends in a go or no-go decision. Plus which validation signals count (pre-orders, paid workarounds) and which do not (likes, compliments).

AI Startup Ideas 2026: What 100 Real Problems Tell Us

Updated 2026-10-18 · 12 min read

Which categories carry the highest opportunity scores in our live directory (HealthTech leads, then FinTech), which AI ideas look crowded, and five bets worth testing first, each linked to its scored problem.

Build AI products that last

Vibe Coding Problems: Why Your Lovable App Breaks in Week Two

Updated 2026-10-18 · 9 min read

v0, Lovable, Bolt and Replit ship a working demo in an hour; two weeks later the codebase is hard to change. Why it happens, what 2026 security research found, a security checklist, and the 4-step cleanup that works.

Best MCP Servers in 2026: How to Choose One You Can Trust

Updated 2026-10-18 · 10 min read

A 6-point checklist for MCP servers in Claude Code, Cursor, VS Code and Windsurf: who publishes it, maintenance, permissions, where it runs. Plus tool poisoning risks and where to find servers.

AI Agent Cost Control: How to Stop Runaway Token Bills

Updated 2026-10-18 · 12 min read

The four ways agent costs spiral, four guardrails that stop a runaway loop, what provider spend limits do and do not cover, and the built-in levers (caching, 50% batch discount) to switch on first.

Try it on your own idea