Rahul Kulkarni

A private fitness companion for close friends.

Helps small friend groups stay accountable, sync activities, and get AI-powered fitness insights without turning health into a public feed. 500+ installs.

Making AI agents safe enough to move money.

Reads every transaction an AI agent wants to sign, explains it in plain language, and blocks anything that breaks your rules. Live on Solana mainnet.

Crypto trading that fits in your pocket.

Routes trades across seven networks behind one mobile interface, so you can find a token, swap it, and settle with one hand.

At ~200ms slots, a far-away next leader can eat half the slot budget. SIMD-0675 groups nearby validators in the leader schedule, and the tradeoff is how much locality to add before resilience suffers.

SIMD-0553 changes Solana fees from flat signature costs to resource-based pricing. Why loose compute budgets could become a user-facing cost problem.

The models are capable enough for many products now. The hard part is building the retries, state, validation, observability, and recovery around them.