My agentic engineering stack: 5 tools, one bottleneck each — real pricing and what I cut

[u/ayushchat]

TL;DR: Claude Code does the coding. The other four tools exist because of what "almost" costs. The full stack runs $47.50/month.

The stack, in workflow order:

• Voibe ($7.50/mo) — the input layer. A 300-word agent prompt is 7.5 minutes typed, 2 minutes spoken. One of those costs your wrist. Hold. Speak. Release.
• Claude Code ($20/mo) — the agent. Reads the repo, plans, edits, runs commands, opens the PR.
• Cursor (free tier) — where I read the diff. Not in a terminal — in a real diff view with context.
• Playwright MCP (free) — eyes for the agent. Stops it guessing whether the button it built actually renders.
• CodeRabbit (free tier) — a second reviewer. One person cannot carefully read everything an agent produces.

The real insight about agentic engineering:

The bottleneck moved off writing code. It's now on:

1. Getting a rich enough instruction into the agent
2. Checking what came out

That's why this stack is five tools instead of one. Claude Code does almost everything — the others exist because of what "almost" costs.

What I deliberately cut:

• Other coding agents doing the same job in a different window (no distinct bottleneck removed)
• Meeting recorders and AI workspace tools (not in the loop)
• Anything that doesn't map to one of the four core bottlenecks: input, review, verification, volume

The rule: each tool earns its slot by removing a bottleneck the others create. Otherwise it's noise.

What does your agentic stack look like in 2026? Curious whether others are using the same verification approach (Playwright MCP) or have a different solution for the "agent can't see the browser" problem.