Start with UI Mocks to Boost Code Quality
Generate UI screens, flows, variants, and prototypes in Stitch (Google's free Labs tool) using prompts or screenshots. Export for handoff to coders, avoiding poor visual prompting that ruins agent outputs. Ideal for landing pages, dashboards, mobile screens, or onboarding—fits real workflows by organizing canvases and iterating designs before coding, directly improving generated app results.
Delegate Async Repo Tasks Without Constant Oversight
Use Codex (OpenAI's free tier via ChatGPT, limited time) for cloud agents handling bug fixes, refactors, code reviews across app/CLI/web/IDE. Pair with Jules (Google's no-cost tier) for GitHub-specific tasks like adding tests, fixing issues, improving docs, or refactoring components. Choose based on fit: Codex for broad ecosystems, Jules for clean batch GitHub work—frees you for other tasks while agents deliver changes.
Leverage Terminal and Editor Tools for Core Coding
Run Gemini CLI (open-source, local terminal) with 60 requests/minute and 1,000/day free tier after Google login—scriptable for MCP workflows, codebase work, outperforming paid options for heavy lifting. Complement with Gemini Code Assist (free IDE tier in VS Code/JetBrains) for inline edits/explanations/agent mode. For full agentic editors, Antigravity free tier offers unlimited tab completions, agent manager, browser integration, model choice despite weekly rate limits—beats many paid tools in value. GitHub Copilot free provides 2,000 completions/50 premium requests monthly for quick VS Code multi-file assists, prioritizing setup ease.
Experimental Open Options and Full Stack Assembly
Qwen Code (open-source terminal agent) delivers 1,000 free daily requests via OAuth, mirroring Gemini CLI for codebase tasks. Test Devstral (Mistral free experiment) or Xiaomi Mimo V2 (zero-token in OpenClaw) for autonomous agents with browser/tools/planning/memory, slashing open ecosystem costs. Recommended zero-dollar stack: Stitch (UI), Codex/Jules (async), Gemini CLI/Qwen (terminal), Antigravity (agentic editor), Copilot/Code Assist (casual). Mix per task—free tiers vary (previews/limits), but enable UI-to-deployment without subscriptions, ideal for students/hobbyists.