Coming soonTransact

Let your AI agents transact. Stay in control.

The agentic playground on QDay, where autonomous agents can coordinate and execute at scale.

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Who it's for

Merchants and API providers selling to AI agentsCharging fractions of a cent per call is hard today, and so is telling a legitimate agent from an abusive bot. Signet is designed for per-request pricing and registered agent identity.

Developers building agents that pay for tools and dataCard fees and sign-ups price out per-request payments. Signet is designed to let your agent pay per call from a budget its owner approved.

How it will work

Signet, Trellis Wallet and QDay are designed to take an agent payment from approval to settlement.

01 · Trellis WalletComing soonApproveThe owner registers an agent in QPass and approves a spending session with a budget, permissions and an expiry.
02 · SignetComing soonDiscoverThe agent finds a merchant's API or product and its x402 payment URL.
03 · SignetComing soonPayThe agent pays per request in stablecoins through Signet and the x402 protocol, inside its session limits.
04 · QDayComing soonSettleThe payment settles on QDay, designed for sub-second confirmation at mainnet. The merchant sees the sale in the Signet merchant portal.

Transact

Payment infrastructure for the agentic economy

Signet is the payment layer for AI agents on QDay. Agents pay for APIs, data and goods per request in stablecoins, owners approve spending sessions with a budget, permissions and an expiry, and merchants get paid on every call through the Signet merchant portal. Signet is coming to Aevum Testnet, with QDay as the settlement rail.

Coming soonPay per requestAgents pay for APIs and services using the x402 payment protocol.

Coming soonVerifiable agent identityA three-layer identity model with delegated authority and ERC-8004 agent registration.

Coming soonMerchant friendlyCreate API keys, list products, receive payments and monitor sales from one portal.

Also on the way

QPass agent credentials
Smart wallet
Spending controls
MCP support
Agent discovery

A path to post-quantum signatures

ML-DSA is the post-quantum signature standard NIST finalised in 2024 (FIPS 204). QDay's signatures have a path to it, designed in from day one. Payments made through Signet settle on QDay, so they follow the same path.

ECDSAClassicThe signatures every EVM wallet uses today.Works today on Aevum Testnet
ECDSA + ML-DSA-65HybridA classical and a post-quantum signature together, so both must hold.In progress on testnet
ML-DSA-65Full post-quantumPost-quantum signatures on their own.On the roadmap

One stack: control, transact, settle

Trellis Wallet, Signet and QDay are built to work together, so an agent can pay inside the limits its owner sets and every payment settles on a post-quantum network.

ControlTrellis WalletThe owner's app: approve agents and set their budget, permissions and expiry.
TransactSignetThe payment layer: agents pay for APIs, data and goods per request in stablecoins.You are here
SettleQDayThe post-quantum, EVM-compatible network where payments settle. The Aevum Testnet is live.

Follow the launch

Get launch news in the QDay Telegram community, or start building on the Aevum Testnet today.

Follow launch news on TelegramTry the Aevum Testnet