Things I've built, mostly because a problem annoyed me enough.
Turns bank, card and broker statements into one exact ledger that you, and your AI over MCP, can explore. The maths is deterministic; AI only explains it. Your data stays in your own Postgres.
TypeScript · Next.js · NestJS · PostgreSQL · MCP
Tells you why Postgres got slow at 14:32: it spots plan flips, lock pile-ups and missing indexes, suggests the fix, then checks it worked. Self-hosted and read-only.
PostgreSQL · pg_stat_statements · EXPLAIN · Docker
Part-of-speech tagging with a Decision Tree classifier trained on a tagged NLTK corpus, labelling each word in a sentence with its grammatical role.
Python · NLTK · scikit-learn · NLP