Introducing Sardis: Secure Payments for AI Agents

Sardis provides MPC wallets and natural language policy enforcement so AI agents can transact autonomously while preventing financial hallucination errors.

Today we announce Sardis, a Payment OS designed specifically for AI agents. Learn how MPC wallets and policy enforcement enable autonomous financial operations while preventing hallucination-driven spending.

The Problem We're Solving

AI agents are transforming how we work, but they are stuck in a "read-only" trap. They can research, plan, and recommend -- but when it comes time to actually execute a purchase, they hit a wall: 2FA codes, CAPTCHAs, and payment systems designed for humans.

We have seen this firsthand. While building AI agents, every agent we built hit the same blocker: they could not complete transactions autonomously. The "last mile" of agent productivity remained locked.

What is Sardis?

Sardis is a payment infrastructure layer that gives AI agents the ability to transact autonomously -- with proper guardrails. We provide:

MPC Wallets: Non-custodial wallets where key shares are distributed across parties. No single entity can move funds unilaterally.
Policy Engine: Natural language spending rules that agents must follow. "Max $50 per transaction, only approved vendors." 12-check pipeline, fail-closed.
Virtual Cards: Issue virtual Visa/Mastercard numbers linked to agent wallets for traditional merchant payments via Stripe Issuing.
Full Auditability: Every transaction is logged with complete context -- what the agent was trying to do, why, and whether it succeeded. Cryptographic attestation envelopes with Merkle proofs.

How It Works

Getting started with Sardis takes minutes:

npx @sardis/mcp-server start
# That's it. Your agent now has 52 payment tools.

For developers who want more control:

import { SardisClient } from '@sardis/sdk';

const client = new SardisClient();
const wallet = client.wallets.create({
  name: 'my-agent',
  policy: {
    maxPerTransaction: 50,
    dailyLimit: 500,
    allowedVendors: ['aws.amazon.com', 'github.com']
  }
});

// Agent can now spend within these bounds
await sardis.pay({
  to: 'github.com',
  amount: 29.99,
  purpose: 'Monthly Pro subscription'
});

What We've Shipped

Since initial release, Sardis has grown to include:

52 MCP tools for Claude Desktop and Cursor
13 framework integrations (LangChain, CrewAI, AutoGPT, OpenAI Agents SDK, Vercel AI SDK, and more)
5 payment protocols (AP2, UCP, A2A, TAP, x402)
Pay with Sardis merchant checkout (0% USDC fee)
USD-first treasury with ACH funding and virtual cards
Multi-chain support (Base execution + 4 funding chains via CCTP v2)

What's Next

We are live on Base mainnet and continuing to expand. If you are building AI agents and want to give them financial autonomy, check out our documentation to start building today.

Written by the Sardis Team