# Notes on AI, payments and software | Mattia Ciuni

> Long-form notes by Mattia Ciuni on AI, payments and the philosophy of building software. Written slowly, updated rarely.

- URL: https://mattiaciuni.com/notes
- Type: Notes index

## Notes
- [About the name | Mattia Ciuni](notes/about-the-name.md) - How Noesia stopped feeling like a rough draft and became the name of the company we are building.
- [Honestly? I'm excited. | Mattia Ciuni](notes/honestly-im-excited.md) - Why every hard question about Noesia has made me believe more in the problem, the solution and the timing.
- [The moment my AI agent asked for my credit card | Mattia Ciuni](notes/the-moment-my-ai-agent-asked-for-my-credit-card.md) - The scene that started Noesia: an AI agent did 90% of the work, then stopped at a credit card form. On the wall between acting and paying.
- [The wall in my code: what a security audit taught me that no bootcamp will | Mattia Ciuni](notes/what-a-security-audit-taught-me.md) - I paid strangers to attack my payments engine. The race conditions, the ledger that lied to itself, and the deletion that would have erased every customer.
- [What interviews teach me about people (and my own company) | Mattia Ciuni](notes/what-interviews-teach-me-about-people-and-my-own-company.md) - What written technical work reveals that a conversation can hide, and why every interview has become an audit of my own company.
- [Why AI agents need idempotent payments | Mattia Ciuni](notes/idempotent-payments-for-ai-agents.md) - An agent that does not retry loses money, but retries are exactly what breaks naive payment flows. Why the idempotency key is the memory of an agent's intentions.
- [The agentic economy is a trust problem, not a technology problem | Mattia Ciuni](notes/the-agentic-economy-is-a-trust-problem.md) - Agents can already research, compare and execute. The hard part is deciding what they may do with money, and proving what they did. A case for wallets with rules.
- [On boring systems | Mattia Ciuni](notes/on-boring-systems.md) - The most advanced thing you can build around an AI is often a system that is boring on purpose. A note on determinism, monotonicity and the craft of unremarkable software.
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