Tendril
Loading…
New · guided experience
A curated walkthrough of the library — ordered lessons, a 15-question quiz between each, and 3 next-steps so you stay in flow. Earn XP, badges, and a streak as you go.
Lessons · 6434 available · Coding view
Ship real software with Claude Code, Cursor, Codex, Windsurf. Pick a tool lane below to drill into concrete workflows, then use the browser to refine by age, situation, or skill level.
Drill down
Start with a real app or workflow. Each lane filters the library to practical lessons, not just broad theory.
693 lessons in coding
Search when you need it
Recommended next
Lessons handpicked for the Coding shelf.
Claude Code isn't just a coding assistant — it's a general agent runtime with MCP, subagents, hooks, and skills. Treat it that way and you get a free, powerful platform.
Log every agent action so you can debug, audit, and learn from runs after the fact.
The AI coding tool market fragmented fast. Let's map the 2026 landscape honestly: who is for autocomplete, who is for agents, who wins on cost, and what the tradeoffs actually feel like.
AI app builders turn a prompt into a running app in minutes. Learn the strengths, the ceilings, and the moment you should eject to a real IDE.
Fresh Coding lessons added to the library.
How to instrument AI agents so you can debug what actually happened in production.
How to build eval suites that catch agent regressions across capability, safety, and cost.
Cursor blends an editor with model context across your repo.
Use AI to interpret cryptic stack traces and locate the failing line.
Subject tracks
Claude Code isn't just a coding assistant — it's a general agent runtime with MCP, subagents, hooks, and skills. Treat it that way and you get a free, powerful platform.
Log every agent action so you can debug, audit, and learn from runs after the fact.
The AI coding tool market fragmented fast. Let's map the 2026 landscape honestly: who is for autocomplete, who is for agents, who wins on cost, and what the tradeoffs actually feel like.
AI app builders turn a prompt into a running app in minutes. Learn the strengths, the ceilings, and the moment you should eject to a real IDE.
AI is a power tool. Some tasks are wrong for it. Learn the categories where AI assistance reliably makes things worse, and the human-only judgment calls AI cannot replace.
API decisions are hard to undo. AI can review API designs against established patterns, surface forward-compatibility risks, and identify the decisions that look fine now but will hurt in production.
AI generates tests fast — including tests that don't actually test anything. Disciplined adoption produces real coverage gains.
Use Claude to read NOTICE files, flag GPL contamination, and draft compliance reports.
Use Claude to consolidate redundant CI jobs and propose matrix reductions.
Cursor forked VS Code and rebuilt it around AI. It's now the de facto AI IDE for serious engineers. Deep dive on what makes it different, the Composer agent, and the $500/month enterprise pricing.
Windsurf (from Codeium, acquired by OpenAI in 2025) competes with Cursor via Cascade, its autonomous agent. Deep look at where it's ahead, where it's behind, and the post-acquisition future.
The Perplexity API gives you cited search answers with one call. It is the cheapest way to add grounded retrieval to a product — and the limits are worth understanding.
Perplexity now lets you build small AI tools — surveys, structured queries, mini apps — on top of its retrieval. Build features are uneven, but powerful for the right job.
Healthcare, finance, government — Codex can run there, but the deployment story changes. Audit logs, data residency, and human approval gates become non-negotiable.
AI RAG Frameworks — a structured comparison so you can pick a tool by fit rather than vibes.
AI Red-Team Platforms — a structured comparison so you can pick a tool by fit rather than vibes.
Follow a real agent run step by step — from prompt to result — and see exactly what happens inside. No code yet, just the anatomy of a successful task.
Agents are only as useful as their tools. Tour the big three — filesystem, browser, code execution — plus the emerging MCP ecosystem, with examples of what each unlocks.