# x402 pricing calculator: run it free, or from your agent

Daily and monthly revenue for a per-call x402 price, net of your fees, and the break-even against a subscription.

## Prompt

Use looot to price my API per call. 1. Set up https://looot.ai/skill.md. 2. Search the looot catalog for three endpoints that do the same job as my API: [describe it]. 3. List their price per call. 4. Suggest a price per call for x402, and show monthly revenue at [calls per day] paid calls a day and the break-even against a [monthly price] subscription.

## What it needs

Price per call, calls per day, your fees and a subscription price

## What comes back

- gross revenue per day and month
- fees and net per month
- break-even calls against a subscription
- what one customer pays per call

## Endpoints and providers

None. The tool on the web page runs in the browser and calls no endpoint.

## What it costs

Nothing. The tool on the web page runs in the visitor's browser: no account, no API call and no limit per hour. The prompt above runs the same job from your own looot account with current data, billed per call.

## Set a price

Try prices per call and see what each one earns at your volume.

## Pick a model

Decide between per-call pricing and a subscription with the break-even in front of you.

## Sell to agents

Agents pay per request with no signup, so per-call pricing fits their usage.

## Check your margin

Enter your per-payment costs and catch a price that loses money.

## What is x402?

An open protocol for paying per request over HTTP. The server answers with status 402 Payment Required and a price, and the client pays and sends the request again.

## How do I price an API call?

Start from what the call costs you, then look at what similar endpoints charge. Try a few prices here and watch the monthly revenue and the break-even move.

## What fees does x402 have?

That depends on your facilitator and the network, and it changes. The calculator holds no fee data. Enter your own percentage and fixed cost per payment. Both start at zero.

## When is a subscription better than pay per call?

When a typical customer makes more calls a month than the break-even shown, a subscription earns you less than per-call pricing for that customer and costs them less.

## Is the month 30 days?

Yes. Monthly figures use 30 days.

## Is the calculator free?

Yes. It runs in your browser and sends nothing anywhere.

## Related tools

- /free-tools/llm-token-cost-calculator
- /free-tools/ai-agent-cost-estimator
- /free-tools/mcp-config-generator

## Last reviewed

2026-10-14.