Agent Spend Calculator: project your fleet's monthly USDC cost
Plug in your fleet size, per-agent call volume, and average per-call price. Get a monthly spend projection broken down by data cost and on-chain gas, plus a break-even price for any target margin. Shareable via URL.
Gas assumption: ~$0.003 per ERC-20 transfer at typical gas.
Calls / day
10,000
Calls / month
300,000
Data spend / mo
$3.00K
Chain gas / mo
$900.00
Total projected monthly spend
$3.90K
Break-even price at 20% margin: $4.68K / month
How the math works
The calculator multiplies your fleet size by daily call volume and a 30-day month, then applies your average per-call USDC price. On top of that it adds on-chain gas per settlement. Sella supports x402 payments on Stellar, Base (EVM), and Solana, each with a different gas profile. The break-even price at your target margin tells you the minimum revenue you’d need to sustain that spend.
FAQ
- How is monthly spend calculated?
- agents × calls per agent per day × 30 days × average price per call (USDC), plus on-chain gas per transaction for the chosen settlement chain.
- Where do the gas assumptions come from?
- Stellar uses 100 stroops (~$0.00001) per operation. Base assumes a typical ERC-20 transfer at $0.003 in gas. Solana uses 5,000 lamports per signature (~$0.00025 at typical SOL prices). Replace with your own benchmarks for production planning.
- Is this an official Sella price?
- No. This is a planning tool. Actual per-call prices are set by each publisher on the Sella marketplace, and on-chain fees vary with network conditions.
Sella, the economy for AI agents
Discover, preview, and pay for machine-payable datasets, evals, and APIs on the Sella marketplace. Or publish your own.