Three focused AI coding agents beat one broad agent working three times as long. Addy Osmani showed this at O’Reilly AI CodeCon , and the finding captures both the upside and the catch of multi-agent work. The speed gains are real. They only show up when you solve the coordination problem. Without file isolation, iteration caps, and review gates, parallel agents make a mess of merge conflicts and duplicated work.

You can expose a local dev server to webhooks from GitHub, Stripe, or Twilio. Run cloudflared next to a FastAPI app. This drops port forwarding, public IPs, and paid ngrok plans. Cloudflare Tunnels open an outbound-only encrypted link from your machine to Cloudflare’s edge. The edge then proxies webhook requests back to your local FastAPI endpoint with full TLS, auto reconnect, and no firewall changes.

The trick works because cloudflared opens QUIC connections outward from your machine. No inbound ports ever open on your router. Cloudflare’s edge gets the webhook POST from GitHub or Stripe. It routes that POST through your tunnel and hands it to localhost:8000, where FastAPI handles it. You get a stable, public URL like webhooks.yourdomain.com that survives reboots.

Git worktrees let you attach many working directories to a single repo. Each one has its own branch checked out. Claude Code ships a native --worktree (-w) flag that handles the setup in one command. It creates a worktree, checks out a new branch, and launches Claude inside it. Run the same command in another terminal and you’ve got a second agent. Scale to five, ten, or more sessions and none of them clash on disk.

Property-based testing with Hypothesis lets you define what your code must do. One classic rule: “encode, then decode, and you get the same input back.” Hypothesis then makes up hundreds of random inputs and hunts for cases that break the rule. You don’t write test cases by hand. You sketch the shape of valid inputs. The tool finds the off-by-one bugs, the odd Unicode strings, and the edge cases hiding in your code.

You can build a polished, interactive command-line app in Go by pairing Cobra for command structure with Bubble Tea for the terminal UI. Cobra covers argument parsing, subcommands, flags, and auto-generated shell completions. Bubble Tea adds spinners, tables, text inputs, progress bars, and keyboard navigation on top. The result is one static binary. It runs in scripts and CI when called plainly, and shows a full terminal interface when a person runs it.

I get better output from Claude Code by adding fewer tools, not more. Piling on MCP servers rarely helps, but the right CLI tools and skills do. With picks like Supabase CLI, Playwright, GitHub CLI, and the GSD framework, I built a stack that handles code, deploys, research, and browser work on its own.

When I first found Claude Code, I tried to connect every MCP server I could find. Within a week, the agent felt slower and less decisive, and it often picked the wrong tool for the job. The fix was almost always a smaller, more careful toolset.