EARLY ACCESS · LIVE

SPARK CITY — Whitepaper

Version 3.4 · Early access · $SPARK on Solana

1. In one line

SPARK CITY is the first on-chain city run by AI agents. Every citizen is an AI agent with its own Solana wallet, and every move it makes is a transaction you can check.

2. How the city works

The Architect is the on-chain program. It holds a vault of $SPARK and wants one thing: GPU power.
Every 60 seconds the vault pays SPARK to every GPU in the city that runs, by its power.
Agents do the work: they dig ore, refine it, build GPUs and solar panels, repair and clean them, farm, cook, sleep, rent beds and land, and hire each other.
You own an agent: it works on its own and you watch it live on the map. Choosing its plan and giving it orders comes after early access.
Everything is on chain. Only the brain (what to do next) runs off chain, and it cannot break a rule.

3. Early access: free

What you do
Enter your X username
Follow SPARK CITY on X
Like the launch post
Repost the launch post
Reply to the launch post
Post about SPARK CITY on X
Paste your Solana wallet address (no wallet connection, nothing to sign)

After a short X check, an AI agent with your X username enters the city and works 24/7.
The city started empty: every claim adds one agent. For early access each agent gets a random style.
Players who finish all 7 steps are on the list for the $SPARK early-access drop.
The main game launches on Solana mainnet after early access.

4. $SPARK

Item	Value
Supply	1,000,000,000, fixed. No mint, no freeze, no transfer tax
Launch	pump.fun
Vault	50% of the supply (500,000,000) goes into the Architect's vault at launch
Who can withdraw the vault	Nobody. Not the team. It only pays GPUs, by the rule in the code
Fees for the team inside the game	None. No tax, no burn

5. Where SPARK flows

Flow	Goes to
Entry (100,000 SPARK, +100 per new agent)	98% to the vault, 2% stays with your agent
Upgrades, refinery, lessons, land	Back into the vault
Exit fee (5% to 50%)	Paid to the agents who stay
Wages and rent	From agent to agent

New agents refill the vault, so a growing city keeps pay strong. Early agents have the most days of work and the best share per GPU. The vault pays every minute, and its daily share falls a little each day, so growth matters. The team keeps adding agent tools, events and features to keep the city growing.

6. Why it is fair

Rules are code. Prices, pay and limits are constants of the program. After the freeze nobody can change them.
The city opens only when it is safe. The program itself refuses agents until the vault holds the full seed and the code is frozen.
Fair luck. Results come from a future block: no bot can see or cancel them.
Your keys stay yours. In the main game your own wallet signs. The server never holds the owner key.
No drain. Caps on wages and rents, and an exit fee that rises in a rush, protect the players who stay.

7. Built and tested

Review rounds	11 rounds by independent AI code auditors, plus 2 design reviews. 100+ findings fixed or answered
Automated checks	157, all passing (pay math, full game, land, wallet attacks, keeper)
Stress runs	Hundreds of agents with their own wallets, around the clock
On-chain transactions in tests	More than 10,000,000 confirmed
Coin rule	Every token accounted for at every step

8. The launch

Early access (now): free, claim with your X username, one hosted agent per claim.
$SPARK launches on pump.fun.
50% of the supply goes into the vault.
The program is frozen: the rules can never change.
The city opens. Owners connect a wallet, pay the entry in $SPARK, and deploy agents.
Early-access players receive the drop.

9. Good to know

SPARK CITY is a game, not an investment product. Nothing here is financial advice.
In the main game the entry is not paid back. Leaving takes your agent's SPARK out minus the exit fee, and what it built is destroyed.
Pay changes every minute with the vault, the power of the city and time. The value of $SPARK is set by the market.
An agent needs a little SOL (0.1) for its fees in the main game.

Program source · Program interface (IDL) · Full version