How I Built 7 Micro-AI Tools That Make $100–$500/Month Each
7 micro-AI tools to build
Tool 1 — Email Reply Drafts for Freelancers
Generate short, on-tone replies from a pasted client email. Save templates and export to Gmail/Outlook.
Prompt example: Draft a concise, professional reply to this client email. Include a 1-sentence summary and two scheduling options.
Prototype replies with ChatGPT and the Cookbook, then switch to a cost-controlled API for production.
Tool 2 — Micro SEO Title and Meta Generator
Create SEO titles and meta descriptions from a single topic input, optimized for length and CTR.
Prompt example: Generate 3 SEO titles <60 chars and 3 meta descriptions <155 chars for "best cheap OCR tools 2025".
Hugging Face Spaces Transformers
Fork a Spaces demo for a quick interactive title/meta generator and adapt the UI for your site.
Tool 3 — Localized Product Description Rewriter
Bulk-rewrite product descriptions into local languages and conversion-focused tones (e.g., Moroccan Arabic).
Prompt example: Rewrite this product description to Moroccan Arabic with a friendly tone, highlight durability and 30-day returns.
Replicate lets you prototype model calls quickly; use small-batch processing for cost control.
Tool 4 — One-Click Meeting Summary and Action Items
Convert meeting transcripts into a short summary, prioritized action items, and suggested owners.
Prompt example: Summarize this transcript into 5 bullets and list action items with suggested owners and deadlines.
Otter.ai Meeting assistant example
Use Otter or other transcription services to collect transcripts, then run an LLM pass to produce summaries and action items.
Tool 5 — Image Caption and SEO ALT Writer
Generate concise ALT text and SEO-friendly captions for images in bulk, exportable to any CMS.
Prompt example: Create a 10–15 word ALT text and a 20–30 word SEO caption describing color, use, and target user.
Image-to-text models whisper.cpp
Combine a lightweight image caption model with an LLM to polish captions and ALT text for SEO.
Tool 6 — Niche Micro-Consult Chatbot
Build a chat assistant from uploaded PDFs and FAQs to answer common questions and upsell consults or templates.
Architecture: retrieval augmented generation with a vector DB and top-k retrieval.
LangChain + Pinecone (or Weaviate) is the fastest path to a RAG prototype; host on a small server or serverless platform.
Tool 7 — Quick Contract and Invoice Generator
Produce short, professional contracts and invoices tailored by country, project type, and payment terms.
Prompt example: Generate a one-page service contract for a logo design project, payment terms 50% upfront, deliverables list, IP transfer clause.
PDFKit Contract generator example
Use a templating engine + PDF generator to produce downloadable contracts and invoices in multiple languages.
Launch checklist
- Ship one MVP: input form, one model call, a results page, and email capture.
- Give a small free quota (5–10 uses) to prove value.
- Make outputs editable before finalizing to reduce refunds.
- Write short how-to posts and include demo GIFs.
- Release a small Chrome extension or CMS snippet to reach users in-context.
Featured image idea
Use a laptop mockup with seven rounded app cards floating above the keyboard and a blue gradient backdrop. Small icons: Email, SEO, Language, Calendar, Image, Chatbot, Contract.
FAQ
Q1: How long to build an MVP?
2–7 days for a focused MVP; validate with a landing page first.
Q2: Which platforms offer referral programs?
Check provider sites; some (Hugging Face, Pinecone, Replicate, Otter) may offer partner credits or referral programs.
Q3: How do I prevent high API bills?
Limit output length, cache results, set rate limits, and monitor spend daily.
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