Q402 (Quack AI)
Gasless stablecoin payment relay and managed Agent Wallets across 12 EVM chains (EIP-712 + EIP-7702), with an MCP server and optional ERC-8004 registration on BNB Chain.
Overview
Q402 by Quack AI is a gasless payment layer: users or agents sign EIP-712 typed authorizations and Q402 relays and sponsors gas via EIP-7702 delegation across 12 EVM chains, settling in USDC/USDT/RLUSD/USDG. Agent Wallets are per-agent managed signing wallets with per-transaction and daily caps; they can be registered as ERC-8004 agents on BNB Chain with a weekly reputation write. Ships a 46-tool MCP server and an x402-priced agent trust-check endpoint. Sato Hub observes that q402.quackai.ai is one of the main agentURI hosts in recent BNB Chain ERC-8004 registrations; that is an observation, not an endorsement, and managed Agent Wallets are custodial by design.
Sato Score
38/100· LowHow open, active & verifiable — not a safety or returns grade.
- Maintenance & liveness
- 20/35
- Code transparency
- 4/20
- Interface verifiability
- 0/10
- Docs & demo
- 6/10
- Listing transparency & provenance
- 4/15
- Independent verification
- 4/10
Observed record — 4 daily checks since 2026-09-02
- Succeeded
- 4
- Failed
- 0
- Their error
- 0
- Unattributed
- 0
This is the share of our daily checks that succeeded — not an availability guarantee. A check can fail because the host was down, because our runner timed out, or because the network in between dropped it, and only the first of those is a fact about this project. Failures are split by what we can attribute; anything we cannot attribute is counted, not hidden.
Details
- Chains
- BNB Chain, Ethereum, Avalanche, Arbitrum, Base, Injective, Monad
- Open source
- Partial
- Last checked
- 2026-09-05
Marketplace Signals
No marketplace signals recorded for this resource yet.
Verification status reflects evidence reviewed by Sato Hub. Self-reported claims are never presented as verified.
Where Q402 (Quack AI) fits
Related concepts: How Agents Use Wallets, What Are Onchain Agents?, Onchain Agents vs Offchain Agents
Listing History
Recorded changes to Q402 (Quack AI)'s listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.
- Sep 2, 2026Listed on Sato Hub
- Sep 2, 2026Sato Hub began tracking this listing
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Sato Hub. "Q402 (Quack AI) — Sato Hub." Sato Hub, updated 2026-09-05, accessed 2026-09-06. https://satohub.ai/resources/q402-quack-aiThis page is refreshed daily. Citations include the date so a reader can tell which snapshot a claim came from.
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