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indie-agent-builder · 6 tools

The indie agent builder stack

A pragmatic TypeScript stack for solo or two-person teams shipping AI agents in 2026. Optimized for fast iteration, low ops overhead, and graduation paths when the product hits scale.

Published · For: solo-developers, indie-hackers, ai-first-builders
The stack
  1. 01
    CL
    ai-coding-agent

    Claude Code

    AI Coding Agents

    Terminal-native autonomous coding with Skills for repeatable workflows.
  2. 02
    CL
    llm

    Claude Opus 4.7

    AI Models

    Sharpest frontier model for agentic loops and long-context work.
  3. 03
    MA
    agent-framework

    Mastra

    Agent Frameworks

    TypeScript-native with workflows, evals, and RAG built in.
  4. 04
    AS
    web-framework

    Astro

    Web Frameworks

    Static-first marketing site plus hybrid pages for the app surface.
  5. 05
    VE
    hosting

    Vercel

    Hosting

    Best-in-class DX, generous free tier, preview deploys per PR.
  6. 06
    SU
    database-auth

    Supabase

    Databases

    Postgres plus auth, storage, realtime, and edge functions in one box.

Why this combo

This is the "ship in a month, scale to ten thousand users without a migration" stack. TypeScript end-to-end; one cloud provider for the data plane; one for hosting; one provider for the model; one framework each for the marketing site and the agent layer. Every layer has a clear graduation path if the product warrants it.

This is the stack we’d hand a solo developer or two-person team shipping their first agent-driven product in 2026. It is intentionally boring on the foundation and intentionally sharp on the AI surface.

Why this combination works

One TypeScript codebase. Mastra is TS-native, Astro is TS-native, Supabase has clean TS clients. No language boundary, no API contract maintenance, no JSON-shape drift between services.

One cloud per concern. Vercel handles hosting and edge compute. Supabase handles data, auth, and storage. Anthropic handles inference. Each provider has a generous free tier; the combined free-tier ceiling covers more usage than most v1 products will see in their first month.

Clear graduation paths. When you outgrow Supabase, you move to Neon plus separate auth (Clerk) without rewriting your application layer. When you outgrow Vercel, you move to Cloudflare or self-host. When you outgrow Mastra’s surface area, you’ll likely have enough domain knowledge to know what you actually need.

What this doesn’t cover

Observability, evals, and cost monitoring are not in this v1 cut. At indie scale, console logs plus Mastra’s built-in evals plus Vercel’s analytics is enough. At team scale, you’ll want Langfuse or Helicone in the loop.