Documentation Index
Fetch the complete documentation index at: https://docs.sault.ai/llms.txt
Use this file to discover all available pages before exploring further.
A “rail” is the standard a paid service uses to ask for and accept payment. SAULT supports the common HTTP 402 rails, and more over time. Your agent never has to know which one a service uses — it calls the URL, SAULT handles the rest.
What SAULT supports today
| Rail | Chains |
|---|
| x402 | Base, Solana |
| MPP | Tempo, Solana |
When a service supports more than one
SAULT prefers the chain where your vault has the most available balance. You can pin a preference per agent if you need predictable routing.
New rails later
The agent’s contract — call a URL, get a result — doesn’t change when SAULT adds a rail. Existing agents pick up new rails automatically.