Working tools for real business problems. Each one comes with source code, a README with a quickstart and a test suite, and I can adapt it to your data.
A shopping assistant that answers only from a shop's own product catalog: recommendations, comparisons and "which items are vegan under $5?". Says so when something isn't in the catalog, and each shop's data stays separate. Chatbot · tool calling · ChromaDB · multi-tenant |
Answers questions over company documents, with citations to the source page. Click a citation and the PDF opens at that page. A question the documents don't cover gets an honest "I couldn't find that". RAG · ChromaDB · FastAPI · Groq |
Turns messy PDF invoices into validated structured JSON. Confidence on every field, and arithmetic errors are flagged for review, never silently fixed. FastAPI · Pydantic · LLM extraction · validation |
Paste a product page URL and get clean structured data, optionally filled into a Google Sheets row. Standard page data first, an LLM only for gaps, and every field shows its source. Web extraction · schema.org · Google Sheets |
Playwright bot that logs in, fills a form, submits it and verifies the confirmation number. Retries with backoff, a screenshot of every attempt and a JSON run log. Playwright · retries · Docker · pytest |
Sends each prompt to the cheapest model that passes a quality check, escalates only on failure and caches repeats. Prices come from config, and the benchmark reports only what a real run measured. OpenAI-compatible APIs · routing · caching |
How I build the foundations: auth and billing, safety for AI agents, protocols and tool use. These show how I work rather than a product to buy.
JWT auth with rotating refresh tokens, subscriptions, verified and idempotent Stripe webhooks, rate limiting and a full test suite. FastAPI · JWT · Stripe · SQLAlchemy |
Spend limits and human approval for AI agents that handle funds, with a tamper-evident audit log. FastAPI · policy as config · audit log |
An MCP server exposing a real API as a tool for any agent. Streamable HTTP and stdio from one definition. MCP · GitHub API · stdio |
Support agent combining document search with live order lookups via tool calling. Every answer shows its route and tool calls. Tool calling · RAG · routing log |
Runs support-agent inside an NVIDIA OpenShell sandbox with an allow-list policy for files and network. OpenShell · policy as code · Docker |
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Easy to run Each README has a short quickstart, and the AI projects have a demo mode or a free-tier setup, so you can see them working in minutes. |
Tested offline Test suites that need no keys, no model download and no network, so they run anywhere. |
Honest about failure Low-confidence flags instead of silent fixes, hard rejects with the numbers, "I couldn't find that" instead of a guess. |
SoverGrid: a routing layer for decentralized compute.
X (@joel_depin)
Email: joeloyewole13@gmail.com
Hire me on Upwork: https://www.upwork.com/services/product/development-it-an-ai-chatbot-that-answers-questions-from-your-documents-with-sources-2106016975697311649