The 6 pieces

1. The Brain — a frontier model API (cheap tokens) Your agent's reasoning core. Use a low-cost frontier model so usage stays near $10, not $200/mo. → Claude Fable 5.1 (cache reads cut to $0.25/M) or any cheap frontier API.

2. Skills Layer — pm-claude-skills 174 ready-made agent skills, subagents, and slash commands. Don't build skills from scratch — bolt these on. → github.com/mohitagw15856/pm-claude-skills

3. Memory — Hivemind Turns your agent's runs (traces) into reusable skills, so it gets better every time it works. This is the piece most DIY agents skip. → github.com/activeloopai/hivemind

4. Knowledge — notebooklm-py Programmatic + agentic access to NotebookLM. Give your agent a research brain over your own docs. → github.com/teng-lin/notebooklm-py

5. Browser Control — a Chrome / Playwright MCP The part that makes it "Astra": your agent drives a real browser — clicks, fills, screenshots, tests. → Chrome DevTools MCP / Playwright MCP server

6. The Glue — n8n Open-source automation that connects the pieces and triggers the agent on a schedule or a webhook. → github.com/n8n-io/n8n

Bonus — trending-claude-skills (live leaderboard) Bookmark it. It re-ranks the hottest agent repos every ~15 minutes so your stack never goes stale. → github.com/linny006/trending-claude-skills

The wiring order (this is the part nobody hands you)

  1. Start with the brain. Get a cheap frontier model API key working in a bare agent loop first. Prove it can call one tool.

  2. Add the browser MCP. This is the highest-leverage capability — do it before anything fancy.

  3. Drop in the skills layer. Point the agent at pm-claude-skills so it has a toolbox on day one.

  4. Wire memory last of the "smarts." Hivemind only pays off once the agent is already doing real runs to learn from.

  5. Automate with n8n. Trigger the whole thing on a schedule or webhook so it runs without you.

  6. Sell it. Package one working build (e.g. "an agent that QA-tests any website nightly") and resell the same setup to client after client.

The money play

Agencies charge $2K+ to build a single custom AI agent. You assemble this stack once, then sell the same build on repeat — setup fee + monthly retainer for maintenance. The stack is free; the wiring is the product.

Built by @bestapps.ai — the AI plays nobody's handing you. Follow for the next one.

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