JND6M (JND) - x420.dev
Just Noticeable Difference in Mind.
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What it does
Just Noticeable Difference in Mind
Audience: ai-agents, developers. Tags: jnd6m, jnd, x420, dev.
Pricing
| Pricing model | per-request |
|---|---|
| Price hint | $1/request |
| Accepted tokens | USDC |
| Chain | base |
| Facilitator | coinbase |
How agents pay
- The agent sends a plain request and receives an HTTP 402 response describing the price and payment requirements.
- The agent signs a payment payload for the exact amount on base and attaches it to a retried request.
- The facilitator verifies and settles the payment, then the service returns the paid response.
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Last updated: 2026-08-13