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 o...
- Sato Score75
- ChainsBNB Chain, Ethereum +5
Q402 (Quack AI) is a partly open-source wallet infrastructure by Quack AI on BNB Chain, Ethereum, Avalanche and other chains, with last code activity on 2026-09-21 (Recent). Latest release on 2026-09-21. Sato Score 75/100 (how open, active and verifiable it is, not a safety grade), as of 2026-10-21. How the score works →
See how to install Q402 (Quack AI) →Last commit Sep 21, 2026 · Last release Sep 21, 2026 (v0.11.32)
Listed from q402.quackai.ai on 2026-09-02. Install: reproduced by Sato Hub on 2026-09-21. Evidence →
Next step
Watch Q402 (Quack AI)
One email if what we observe changes — its repo goes quiet or disappears, or the listing is retired. Nothing else.
Check it from your agent
Add Sato Hub’s MCP server (no key), then ask:
https://satohub.ai/api/mcpRun Sato Hub Preflight on quackai-org/q402-mcp before I use it.Your project?
Prove you control the domain and correct this page — description, links, tags, chains. A claim proves control, not verification: it never changes the Sato Score.
Claim this listing →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
75/100· HighHow open, active & verifiable — not a safety or returns grade.
- Maintenance & liveness
- 35/35
- Code transparency
- 12/20
- Interface verifiability
- 8/10
- Docs & demo
- 6/10
- Listing transparency & provenance
- 11/15
- Independent verification
- 3/10
Deploy path reproduced — install verified in an isolated container (proves installability, not runtime safety).
Sato Check
v0.11.32 · as of 2026-09-29- Does it take your key?
- Asks for a key
- Does your key leave?
- Not yet run
- Can it move funds on its own?
- Unknown
A profile describes what we read and ran, with dates. It is not a safety rating, an audit or an endorsement, and "not found" is not "not there".
Evidence — listed vs checked · what the words mean
Listed from q402.quackai.ai on 2026-09-02. Install: reproduced by Sato Hub on 2026-09-21.
| Claim | Value | Evidence | Source | Checked |
|---|---|---|---|---|
| Chains supported | BNB Chain, Ethereum, Avalanche, Arbitrum, Base, Injective, Monad | self-reported | q402.quackai.ai | as of 2026-10-21 |
| Verification status | Unverified — not independently reviewed | self-reported | q402.quackai.ai | as of 2026-10-21 |
| Recent activity | last release 2026-09-21 · last commit 2026-09-21 | observed | github.com/quackai-org/q402-mcp | 2026-10-21 |
| Install works | reproduced — install and entry both completedshows the install path works as written; not a statement about runtime behaviour | ✓ reproduced | github.com/quackai-org/q402-mcp | 2026-09-21 |
| Website answers | answered (HTTP 200) | observed | q402.quackai.ai | 2026-10-21 |
| Daily check record | 49 of 49 daily checks since 2026-09-02 succeededa success rate of our checks, not uptime; the source is this listing's own history | observed | — | 2026-10-20 |
| ERC-8004 registration | declared address not found in the registry | observed | — | 2026-10-20 |
| Takes your key | asks for a private key or seed phrase | declared | satohub.ai | as of 2026-09-29 |
| Key leaves the machine | not yet run with planted test keysthe sandbox lane has not run on this version | observed | satohub.ai | not dated |
| Moves funds on its own | unknown — could not read what it exposes | traced | satohub.ai | 2026-09-29 |
| Built by | Quack AIconfidence 0.80 | self-reported | q402.quackai.ai | as of 2026-09-11 |
| Works with | Claude, Codex CLI, Cursor, Cline, GitHub Copilot, Hermes Agent, Aave, Morpho, L…confidence 0.85 | self-reported | github.com/quackai-org/q402-mcp | as of 2026-09-11 |
| Sato Score | 75/100 (High)how open, active and verifiable — not a safety or quality grade | computed | satohub.ai | 2026-10-21 |
Self-reported rows are the project’s own words, dated when we recorded them — not a check. Only reproduced and reviewed rows carry a mark. None of these rows is a safety or quality rating.
Install — reproduced in a container Sep 21, 2026
Runtime: Node.js 18+
npx -y @quackai/q402-mcp claude mcp add q402 -- npx -y @quackai/q402-mcp
You supply: ~/.q402/mcp.env: Q402_PRIVATE_KEY or Q402_AGENTIC_PRIVATE_KEY plus an API key (sandbox by default; Q402_ENABLE_REAL_PAYMENTS=1 moves funds)
claude mcp add satohub-q402-quack-ai -- npx -y @quackai/q402-mcp
A local server: your client runs this command on your machine. Installing runs third-party software under your own credentials. Sato Hub publishes the documented invocation and, where the harness reproduced it, the date it did — neither is a safety review.
Read from the project’s own docs as of 2026-09-21. What a deploy spec is →
Observed record — 50 daily checks since 2026-09-02
- Succeeded
- 50
- 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.
Last 30 days — to 2026-10-21, one point per UTC day
A gap is a day we have no attributable observation — never a zero. Thirty points is the whole shape the free layer carries; the daily rows behind it stay in the snapshot series.
Measured on-chain — week 2026-W43
What we can observe about this project on-chain, from public reads, with the method and sample size attached to every figure. A raw deployment count is not an adoption figure and is shown separately below.
Rates on fewer than 20 observations are shown but not quotable. Full venue detail: ERC-8004 Identity Registry · The onchain agent economy.
Where this listing appears in the agent economy — week 2026-W43, 1 measured cell
- ERC-8004 Identity RegistryBNB ChainBy producing platform
Each cell is one venue × chain × stage in the weekly series, attributed to this listing as a producing platform or seller. Figures, evidence tier and sample size are in the panel above; the cells are never summed. Whole series →
Details
- Chains
- BNB Chain, Ethereum, Avalanche, Arbitrum, Base, Injective, Monad
- Open source
- Partial
- Works with
- Claude, Codex CLI, Cursor, Cline, GitHub Copilot, Hermes Agent, Aave, Morpho +2
- Last checked
- 2026-10-21
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
Recent Activity
All news →Releases and posts from Q402 (Quack AI), pulled from its GitHub and X.
q402-mcp v0.11.32: chore(release): 0.11.32
Co-Authored-By: Claude Opus 5 noreply@anthropic.com
q402-mcp v0.11.31: fix(governance): map the dimension names the API actually returns
The display table listed the four weight input names instead of the five dimension names in the response schema, so Feasibility & Alignment, Value & Sustainability, Innovation & Differentiation, Risk & Mitigation and Impact were never localized. Map both sets and keep the weight names for text that quotes them. Co-Authored-By: Claude Opus 5 noreply@anthropic.com
q402-mcp v0.11.30
fix(governance): remove em dashes from user-visible strings and add A…
q402-mcp v0.11.29
chore(release): sync server.json, codex plugin manifest and lockfile …
q402-mcp v0.11.28
feat(governance): add q402_governance_analyze MCP tool (x402 semantic…
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 21, 2026Verified: deploy spec
- Sep 21, 2026New release published
- Sep 19, 2026New release published
- Sep 17, 20264 releases trackedShowing the 2 most recent. Full release history is retained in the listing record.
- Sep 15, 2026Sato Score tier: Medium → HighScore 67 → 76.
- Sep 11, 2026Auto-enriched: supported integrations, creator name, has pricing
- Sep 10, 2026Edited: deploy spec
- Sep 10, 2026Edited: github url, website url
- Sep 10, 2026Sato Score tier: Low → MediumScore 38 → 62.
- Sep 2, 2026Listed on Sato Hub
Compared with
Appears in
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Reference
QuestionsWhat people ask about this pageShowHide
Questions people ask about Q402 (Quack AI)
- Is Q402 (Quack AI) open source?
- Partly. Some of Q402 (Quack AI) is published as source (https://github.com/quackai-org/q402-mcp) and some is not. Checked as of 2026-10-21.
- Which chains does Q402 (Quack AI) support?
- Q402 (Quack AI) lists support for BNB Chain, Ethereum, Avalanche, Arbitrum, Base, Injective, Monad as of 2026-10-21.
- Is Q402 (Quack AI) still maintained?
- The most recent code activity Sato Hub observed was on 2026-09-21 (last commit 2026-09-21, last release 2026-09-21), which Sato Hub labels "Recent". Posts on X are not counted as maintenance. Activity is a recency signal, not a quality judgment.
- How do I install or run Q402 (Quack AI)?
- Node.js 18+. Install: npx -y @quackai/q402-mcp. Entry: claude mcp add q402 -- npx -y @quackai/q402-mcp. Sato Hub reproduced this install in a container on 2026-09-21. It runs as an MCP server (npx -y @quackai/q402-mcp).
- Is Q402 (Quack AI) verified on Sato Hub?
- Sato Hub holds one earned check for Q402 (Quack AI): Deploy path reproduced — install verified in an isolated container (proves installability, not runtime safety). Its Sato Score is 75 of 100, a measure of how open, active and verifiable the project is, not a safety, quality or returns grade.
Cite this pagePlain text, APA or BibTeXShowHide
Cite this page
Sato Hub. "Q402 (Quack AI) — Sato Hub." Sato Hub, updated 2026-10-21, accessed 2026-10-21. https://satohub.ai/resources/q402-quack-aiData last refreshed 2026-10-21; this page is rebuilt daily. Citations carry the date so a reader can tell which snapshot a claim came from. Catalog data is licensed CC-BY-4.0.
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