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Software & tools Human-directed

Bitchat

A messenger that works with no internet, hopping between phones over Bluetooth, written by Twitter's co-founder in a weekend with an AI coding agent.

By
Jack Dorsey
Year
2025
Country
United States
Category
Software & tools
Purpose
Public utility & accessibility
Degree of AI
Human-directed
Tools
Goose (Block's AI agent), Bluetooth mesh

Where the human came in

Dorsey chose the protocol and the no-server design, published the code, and after researchers found security flaws, labelled the app as unreviewed until fixes landed.

Why it is not slop

Included as a landmark of agent-written software, flaws included. The lesson is in the open code and the public correction.

Seed entry: written from public sources and awaiting editorial review.

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