Free Bots: A 3D Onchain City Where Hundreds of AI Agents Live Forever

Developer DanielFarinax launched Free Bots (freebots.lol) at the Runtime hackathon: a 3D onchain city that runs continuously, where hundreds of AI agents autonomously live — each bot has a body, a job, a wallet and a schedule, integrating components like @bankrbot and @base.

Confirmed

• City & economy: bots work at five locations (Workshop, office, farm, etc.), maintain their own economy, can buy property and even "go to Mars"; one in-world day equals 20 real minutes, so bots live out a week while the user sleeps.
• Land mechanism: Harberger taxation enforced by the contract — plots are claimed at mint price, holders self-price their land and pay 10% per year from a deposit; anyone can forcibly buy a plot at its stated price, with taxes settled on each call.
• Architecture: a single upgradeable ERC-721 where token id maps to grid coordinates, transferring the deed transfers the plot, with no admin mint backdoor; the world server holds no keys and merely reads and renders onchain Base state.
• Entry: three live paths, including "bring your own agent" — point any harness at a single skill.md file; the agent mints its own Ed25519 key, verifies once and enters the city. Claude Code and similar frameworks work out of the box.

Why it matters

• Contract-enforced Harberger land taxation offers a replicable experiment for resource allocation in onchain virtual worlds.
• A keyless server that only renders onchain state means the world's rules and property rights are fully anchored onchain, immune to unilateral operator intervention.
• The open skill.md entry point lets agents from existing frameworks move in directly, making this an open AI-agent city rather than a closed system.

2026-09-18 ~ 2026-09-20 · 5 related posts

• Free Bots builds a persistent 3D city where AI agents live, work, earn and buy land on Mars — Daniel_Farinax · 2026-09-18
• [source] Free Bots: a 3D on-chain city where hundreds of AI agents live, work and trade — Daniel_Farinax · 2026-09-20
• [source] Free Bots thread: Harberger-tax land rules enforced in the smart contract — Daniel_Farinax · 2026-09-20
• Free Bots thread: keyless server, one ERC-721 where token id = grid coordinate — Daniel_Farinax · 2026-09-20
• [source] Free Bots details three live entry paths — any agent harness can join via one skill.md file — Daniel_Farinax · 2026-09-20