Q402 MCP

Name: Q402 MCP
Author: quackai-org

제작자: quackai-org버전 0.11.34i★ –i내 컴퓨터에서 실행

레지스트리 이름io.github.quackai-org/q402-mcp

설치

개요

제작자가 쓴 설명(영어 원문)

Q402 - gasless payments, yield, escrow, bridge & NAV triggers on 12 EVM chains. Sandbox-default.

PopNx MCP의 세 기둥

이 세 가지는 절대 하나의 점수로 합치지 않아요. 의견, 측정, 인기는 서로 다른 것이니까요.

사용자 의견i아직 리뷰가 없어요리뷰는 다음 단계에서 계정 기능과 함께 열려요
우리의 기본 점검i1개 중 1개 통과공개된 정보로 점검했으며, 코드는 아직 스캔하지 않았어요
사용 정도i초기↓ 488/주 · ★ –

할 수 있는 일

이 서버는 아직 쉬운 말로 된 요약을 쓰지 못했어요. 아래는 레지스트리에서 읽어 온 사실이에요.

연결 방식: 내 컴퓨터에서 실행
전송 방식: stdio
카테고리: 암호화폐 및 블록체인
입력해야 할 값: Q402_TRIAL_API_KEY, Q402_MULTICHAIN_API_KEY, Q402_PRIVATE_KEY, Q402_AGENTIC_PRIVATE_KEY, Q402_API_KEY

설치

쓰고 있는 AI 앱을 고른 다음 설정을 복사하세요.

설치하기 전에

기본 점검: 1개 중 1개 통과
내 컴퓨터에서 내 사용자 계정의 권한(파일, 네트워크, 앱)으로 실행돼요.
직접 입력할 값: Q402_TRIAL_API_KEY, Q402_MULTICHAIN_API_KEY, Q402_PRIVATE_KEY, Q402_AGENTIC_PRIVATE_KEY, Q402_ENABLE_REAL_PAYMENTS, Q402_MAX_AMOUNT_PER_CALL, Q402_ALLOWED_RECIPIENTS, Q402_RELAY_BASE_URL, Q402_AGENT_WALLET_ADDRESS, Q402_API_KEY, Q402_WALLET_ID, Q402_BUILDER_CODE

비밀로 표시된 값은 내 계정의 열쇠예요. 절대 다른 사람과 공유하거나 채팅에 붙여 넣지 마세요.

필요한 것

npmNode.js 설치(npx 명령어용)

어떤 앱을 쓰세요?

ClaudeClaude CodeCursorVS CodeChatGPT

위에서 앱을 고르세요. 기억해 두었다가 다음부터는 버튼에 “…에 설치”라고 표시해요.

Claude Desktop → Settings → Developer → Edit Config를 열고 claude_desktop_config.json에 이 내용을 붙여 넣으세요

{
  "mcpServers": {
    "q402": {
      "command": "npx",
      "args": [
        "-y",
        "@quackai/q402-mcp"
      ],
      "env": {
        "Q402_TRIAL_API_KEY": "your-value",
        "Q402_MULTICHAIN_API_KEY": "your-value",
        "Q402_PRIVATE_KEY": "your-value",
        "Q402_AGENTIC_PRIVATE_KEY": "your-value",
        "Q402_ENABLE_REAL_PAYMENTS": "your-value",
        "Q402_MAX_AMOUNT_PER_CALL": "your-value",
        "Q402_ALLOWED_RECIPIENTS": "your-value",
        "Q402_RELAY_BASE_URL": "your-value",
        "Q402_AGENT_WALLET_ADDRESS": "your-value",
        "Q402_API_KEY": "your-value",
        "Q402_WALLET_ID": "your-value",
        "Q402_BUILDER_CODE": "your-value"
      }
    }
  }
}

터미널에서 이 명령어를 실행하세요

claude mcp add q402 --env Q402_TRIAL_API_KEY=your-value --env Q402_MULTICHAIN_API_KEY=your-value --env Q402_PRIVATE_KEY=your-value --env Q402_AGENTIC_PRIVATE_KEY=your-value --env Q402_ENABLE_REAL_PAYMENTS=your-value --env Q402_MAX_AMOUNT_PER_CALL=your-value --env Q402_ALLOWED_RECIPIENTS=your-value --env Q402_RELAY_BASE_URL=your-value --env Q402_AGENT_WALLET_ADDRESS=your-value --env Q402_API_KEY=your-value --env Q402_WALLET_ID=your-value --env Q402_BUILDER_CODE=your-value -- npx -y @quackai/q402-mcp

실행하기 전에 빈 값을 채워 주세요.

Cursor에서 열기

또는 설정을 직접 복사하기

프로젝트의 .cursor/mcp.json 또는 ~/.cursor/mcp.json에 붙여 넣으세요

{
  "mcpServers": {
    "q402": {
      "command": "npx",
      "args": [
        "-y",
        "@quackai/q402-mcp"
      ],
      "env": {
        "Q402_TRIAL_API_KEY": "your-value",
        "Q402_MULTICHAIN_API_KEY": "your-value",
        "Q402_PRIVATE_KEY": "your-value",
        "Q402_AGENTIC_PRIVATE_KEY": "your-value",
        "Q402_ENABLE_REAL_PAYMENTS": "your-value",
        "Q402_MAX_AMOUNT_PER_CALL": "your-value",
        "Q402_ALLOWED_RECIPIENTS": "your-value",
        "Q402_RELAY_BASE_URL": "your-value",
        "Q402_AGENT_WALLET_ADDRESS": "your-value",
        "Q402_API_KEY": "your-value",
        "Q402_WALLET_ID": "your-value",
        "Q402_BUILDER_CODE": "your-value"
      }
    }
  }
}

브라우저가 앱을 열지 물어본 다음, 앱이 설정을 보여 주고 확인을 요청해요. 키 값은 비워 두니 직접 입력하세요.

VS Code에서 열기

또는 설정을 직접 복사하기

프로젝트의 .vscode/mcp.json에 붙여 넣으세요

{
  "servers": {
    "q402": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@quackai/q402-mcp"
      ],
      "env": {
        "Q402_TRIAL_API_KEY": "your-value",
        "Q402_MULTICHAIN_API_KEY": "your-value",
        "Q402_PRIVATE_KEY": "your-value",
        "Q402_AGENTIC_PRIVATE_KEY": "your-value",
        "Q402_ENABLE_REAL_PAYMENTS": "your-value",
        "Q402_MAX_AMOUNT_PER_CALL": "your-value",
        "Q402_ALLOWED_RECIPIENTS": "your-value",
        "Q402_RELAY_BASE_URL": "your-value",
        "Q402_AGENT_WALLET_ADDRESS": "your-value",
        "Q402_API_KEY": "your-value",
        "Q402_WALLET_ID": "your-value",
        "Q402_BUILDER_CODE": "your-value"
      }
    }
  }
}

브라우저가 앱을 열지 물어본 다음, 앱이 설정을 보여 주고 확인을 요청해요. 키 값은 비워 두니 직접 입력하세요.

이 서버는 내 컴퓨터에서 실행되는데, ChatGPT는 인터넷에 있는 서버에만 연결할 수 있어요. 다른 앱을 고르세요.

선택한 앱은 이 기기의 쿠키에만 저장돼요. 계정은 필요 없어요.

직접 입력할 값

Q402_TRIAL_API_KEY 비밀 env
Recommended path: skip this UI and run `q402_doctor` after install - it stores secrets in ~/.q402/mcp.env, which the server auto-loads. Fill this field directly ONLY if your MCP client manages secret…
Q402_MULTICHAIN_API_KEY 비밀 env
Recommended path: skip this UI and run `q402_doctor` after install - it stores secrets in ~/.q402/mcp.env, which the server auto-loads. Fill this field directly ONLY if your MCP client manages secret…
Q402_PRIVATE_KEY 비밀 env
Mode A - real EOA signing. Hex-encoded EVM private key (0x + 64 hex chars) of YOUR MetaMask wallet, used to sign payment authorizations LOCALLY on your machine. After your first payment that wallet s…
Q402_AGENTIC_PRIVATE_KEY 비밀 env
Mode B - local Agent Wallet signing. Hex-encoded EVM private key (0x + 64 hex chars) exported from your Agent Wallet at https://q402.quackai.ai/dashboard -> Agent tab -> Export. Signs LOCALLY just li…
Q402_ENABLE_REAL_PAYMENTS env
Live-mode switch. 0 = sandbox (test mode, no funds move - every q402_pay returns a fake hash). 1 = real on-chain payments. Default 1 since v0.5.11: safe because mode only flips to live when a live AP…
Q402_MAX_AMOUNT_PER_CALL env
Per-call USD-equivalent cap for USDC/USDT/RLUSD. Any such q402_pay request with amount above this is rejected before signing. Q (QuackAI) is exempt by design (your own token; recipient allowlist + co…
Q402_ALLOWED_RECIPIENTS env
Optional comma-separated lowercase EVM addresses. When set, q402_pay rejects any recipient not on this allowlist.
Q402_RELAY_BASE_URL env
Override for the Q402 relay endpoint. Defaults to https://q402.quackai.ai/api. Set explicitly when running against a self-hosted Q402 deployment or a non-canonical environment.
Q402_AGENT_WALLET_ADDRESS env
Server-managed Agent Wallet picker (walletMode='agentic-server' only). Lowercased agent wallet address (the hex 0x... shown on the Agent tab of your dashboard) selecting which of your Agent Wallets t…
Q402_API_KEY 비밀 env
DEPRECATED legacy single-key env from pre-v0.5.0 installs. The server still reads it as a silent fallback so existing setups keep working, but new users should pick a scoped variant instead. Q402_TRI…
Q402_WALLET_ID env
DEPRECATED soft-migration alias for Q402_AGENT_WALLET_ADDRESS (one release of overlap from v0.6.0). The server still accepts it but logs a deprecation notice. New installs should set Q402_AGENT_WALLE…
Q402_BUILDER_CODE env
Optional Base Builder Code for onchain attribution (ERC-8021 / Base Builder Codes). When set, every q402_x402_fetch payment includes your code as the client/intermediary in the x402 payment extension…

이 설정은 제작자의 레지스트리 정보로 만들었어요. README와 다르면 README를 따르세요.

할 수 있는 일

내 컴퓨터에서 실행돼요. 설치하면 AI 앱에 도구 목록이 나타나요.

기본 점검i

누구나 볼 수 있는 정보를 점검했고, 코드는 읽지 않았어요. 해당하지 않는 항목은 개수에서 뺐어요. · 2026년 11월 8일 점검

✓ 통과
제작자와 저장소 일치
레지스트리 이름이 GitHub 계정 quackai-org 기준으로 확인되었고, 이 계정이 저장소를 소유하고 있어요
… 아직 점검 안 함
계속 관리되고 있음
아직 GitHub에서 이 저장소를 읽어 오지 않았어요
… 아직 점검 안 함
라이선스 있음
아직 GitHub에서 이 저장소를 읽어 오지 않았어요
– 해당 없음
엔드포인트 응답
내 컴퓨터에서 실행되는 서버라 인터넷 엔드포인트가 없어요
– 해당 없음
OAuth로 로그인
내 컴퓨터에서 실행되며, 대신 로컬 설정을 사용해요
… 아직 점검 안 함
도구 설명에 숨겨진 지시 없음
내 컴퓨터에서 실행돼요. 도구 목록은 인터넷 엔드포인트가 있는 서버에서만 읽을 수 있어요

암호화폐 및 블록체인 카테고리의 다른 서버와 비교i

이 카테고리의 다른 서버 1615개 중 0%보다 스타가 많아요
이 카테고리의 다른 서버 1615개 중 92%보다 최근에 레지스트리에 공개됐어요
기본 점검 결과가 이 카테고리의 다른 서버 1615개 중 100%와 같거나 더 좋아요

레지스트리에서 이 카테고리의 활성 서버 전체와 비교했어요. 스타는 게시자가 저장소를 소유한 경우에만 세요.

자주 묻는 질문

Q402 MCP, 안전한가요?

해당하는 기본 점검 1개 중 1개를 통과했어요. 코드는 읽지 않았어요. 키나 토큰을 넣기 전에 서버가 어떤 권한을 요구하는지 확인하고, 꼭 필요한 권한만 있는 키를 쓰세요.

어떤 키나 코드가 필요한가요?

입력해야 할 값: Q402_TRIAL_API_KEY, Q402_MULTICHAIN_API_KEY, Q402_PRIVATE_KEY, Q402_AGENTIC_PRIVATE_KEY, Q402_API_KEY

내 컴퓨터에서 실행되나요, 클라우드에서 실행되나요?

내 컴퓨터에서 실행돼요. AI 앱이 필요할 때 실행하고, 데이터는 제작자의 서버를 거치지 않아요(서버 자체가 온라인 서비스를 호출하는 경우는 제외).

아직 관리되고 있나요?

GitHub 저장소는 마지막으로 – 변경됐고, 최신 버전(0.11.34)은 5일 전 레지스트리에 올라왔어요.

어떤 앱에서 쓸 수 있나요?

Claude Desktop, Claude Code, Cursor, VS Code처럼 MCP를 지원하는 앱에서 쓸 수 있어요. 내 컴퓨터에 Node.js도 있어야 해요.

대신 쓸 수 있는 건 뭐가 있나요?

같은 카테고리에는: xsolana, Smogon MCP, Mempool MCP

대안

같은 카테고리에서 다른 제작자가 만든 서버예요. 스타 순으로 정렬했어요.

카드 보는 법:↓ 주간 다운로드i★ GitHub 스타i세 기둥: 리뷰 · 점검 · 사용 정도i업데이트 = 최신 버전을 레지스트리에 공개한 날i

xsolana

Design, check, simulate and launch Solana game economies on loot, one shared program, no contract.

제작자: XGamesFun아주 새로움↓ 164/주오늘 업데이트

내 컴퓨터에서 실행

설치

Smogon MCP

MCP server for competitive Pokemon, full dex data plus monthly Smogon usage statistics.

제작자: mrfentmen아주 새로움↓ 53/주오늘 업데이트

내 컴퓨터에서 실행

설치

Mempool MCP

Bitcoin network status: recommended fees, mempool backlog, blocks, addresses, difficulty retargets.

제작자: mrfentmen아주 새로움↓ 184/주오늘 업데이트

내 컴퓨터에서 실행

설치

제작자의 README

README 열기

제작자의 저장소에서 쓰인 그대로 가져왔어요. PopNx MCP가 검토하거나 보증한 내용이 아니에요. HTML, 이미지, 스크립트는 제거했어요. 링크를 누르면 이 사이트를 벗어나요.

@quackai/q402-mcp

MCP server for Q402 - gasless USDC, USDT, RLUSD, and USDG payments across 12 EVM chains (USDG on Robinhood Chain), callable from Claude (Desktop / Code), OpenAI Codex CLI, and any other Model Context Protocol client.

Free trial available. 500 gasless transactions on BNB Chain + Base (USDC + USDT), no card. One wallet signature: https://q402.quackai.ai.

Limited-time bonus: Mantle (USDC + USDT) is also covered by trial keys during 2026-08-21~08-28 UTC+9.

Trial-scope policy: API keys minted under the free-trial program (plan: "trial") settle on BNB Chain (USDC/USDT gasless) and Base (USDC/USDT gasless) as permanent chains. Avalanche trial has ended — use a Multichain key for avax. Mantle (USDC/USDT gasless) is covered during the limited-time window 2026-08-21~08-28 UTC+9 — server-side time enforcement, returns TRIAL_BNB_ONLY outside the window. Paid API keys see the full 12-chain matrix at all times.

Quote → route → (optional) settle stablecoin payments across 12 EVM chains, from any MCP client. Recipient gets the full amount; sender pays $0 gas via Q402's EIP-7702 relayer.

Quick start

Register the server with your client (one-line per client).
Say "Set up Q402" to your agent. It runs q402_doctor → creates ~/.q402/mcp.env → walks you through pasting keys.

1. Register the server

Client	Command / config
Claude Code (CLI)	`claude mcp add q402 -- npx -y @quackai/q402-mcp`
Claude Desktop (app)	Edit `claude_desktop_config.json` (Settings → Developer → Edit Config): `{ "mcpServers": { "q402": { "command": "npx", "args": ["-y", "@quackai/q402-mcp"] } } }`. Restart the app.
OpenAI Codex CLI	`codex mcp add q402 -- npx -y @quackai/q402-mcp` (Windows fallback: see below)
Cursor	Add to `~/.cursor/mcp.json`: `{ "mcpServers": { "q402": { "command": "npx", "args": ["-y", "@quackai/q402-mcp"] } } }`
Cline	Cline → Settings → MCP Servers → Edit JSON. Same shape as Cursor.
GitHub Copilot (VS Code)	Add to `.vscode/mcp.json` - root key is `servers`, not `mcpServers`: `{ "servers": { "q402": { "command": "npx", "args": ["-y", "@quackai/q402-mcp"] } } }`. Reload VS Code, then enable q402 in the Copilot Chat tools picker.
Hermes Agent (Nous Research)	YAML, not JSON. Add under `mcp_servers` in `~/.hermes/config.yaml` (see below), then run `/reload-mcp`.
Any other stdio MCP client	Point it at `npx -y @quackai/q402-mcp`. No client-specific code.

Hermes Agent - YAML config ( ~/.hermes/config.yaml )

Hermes reads MCP servers from ~/.hermes/config.yaml under mcp_servers (YAML, not JSON):

mcp_servers:

q402: command: "npx" args: ["-y", "@quackai/q402-mcp"] enabled: true

After editing, run /reload-mcp in Hermes to load the tools. Or use the CLI: hermes mcp add q402 --command npx --args -y @quackai/q402-mcp.

Claude Code (the CLI, claude binary) and Claude Desktop (the macOS / Windows app) are different products. The claude mcp add command only exists in the CLI; the Desktop app needs the JSON config above.

Secrets are NOT in this config. The server reads them from ~/.q402/mcp.env (same pattern as AWS / Stripe / gh CLIs).

Windows: codex mcp add returns "Access is denied"

Some Windows setups block codex.exe from writing its own config. Add the stanza to ~/.codex/config.toml by hand:

[mcp_servers.q402]

command = "npx" args = ["-y", "@quackai/q402-mcp"]

Then restart Codex. Same effect as codex mcp add q402 -- npx -y @quackai/q402-mcp.

2. First-time setup

Restart your client, ask: > *"Set up Q402"*

The agent runs q402_doctor. On first install:

Creates ~/.q402/mcp.env (placeholders)
Opens it in your editor
Walks you through pasting an API key + a signing path into the file, not into chat
Restart + re-run q402_doctor to verify

Keys never paste into chat. Local modes sign on your machine; the key never leaves the device. Mode C (server-managed) needs no PK on the client.

Pick a signing mode

Mode	Env	Signer	Notes
A	`Q402_PRIVATE_KEY`	MetaMask EOA, local	Simplest. Shows "Smart account" after first use (reversible via `q402_clear_delegation`). After EIP-7702 delegation to an older implementation, `q402_x402_fetch` is unavailable until `q402_clear_delegation` is called (gasless, reversible; next `q402_pay` re-delegates). If delegated to the current ERC-1271-capable implementation, `q402_x402_fetch` works normally.
B	`Q402_AGENTIC_PRIVATE_KEY`	Agent Wallet, local	Export PK from the dashboard → Wallets → Danger Zone → Export private key. MetaMask untouched.
C	(just an API key)	Agent Wallet, server-managed	No PK on the client. One-shot pays accept Trial or Multichain keys; recurring needs Multichain on every chain (BNB included).

When more than one mode is set, q402_pay asks the user which to use. Picker: walletMode = "agentic-server" \| "agentic-local" \| "eoa".

Manual setup (no AI)

Create ~/.q402/mcp.env yourself with the template below. Live mode only flips when an API key + a signing path are populated, so saving the template as-is stays in sandbox. Q402_ENABLE_REAL_PAYMENTS=0 forces sandbox even with real keys.

# ~/.q402/mcp.env

── API key (pick one or both for auto-routing) ──

Q402_TRIAL_API_KEY= # Free Trial, BNB (permanent) + Base (permanent) + Mantle limited-time (from /event) Q402_MULTICHAIN_API_KEY= # Paid Multichain, all 12 chains (from /payment)

── Signing path - pick ONE of Mode A / B / C ──

Mode A: your MetaMask EOA's hex private key.

Hardware wallets (Ledger / Trezor) are NOT supported here - Q402

needs a raw hex key it can sign EIP-7702 type-4 authorizations with.

Q402_PRIVATE_KEY=

Mode B: exported Agent Wallet pk from the dashboard. Keeps your

MetaMask untouched. Get it at:

https://q402.quackai.ai/dashboard → Agent tab → Export

Q402_AGENTIC_PRIVATE_KEY=

Mode C: no PK needed. A Trial key also enables Mode C one-shot payments;

leave both PK lines blank. Q402 signs with the server-managed Agent Wallet.

Multichain key required for recurring, Mode C batch, and bridge/OFT.

Optional: pin one of your Agent Wallets when you have multiple (max 10).

Q402_AGENT_WALLET_ADDRESS=0x...

Live mode switch:

0 = sandbox (test mode, no funds move)

1 = real on-chain payments

Default 1 - safe because mode only flips to live when an API key AND

at least one valid signing path (A/B/C) are populated above.

Q402_ENABLE_REAL_PAYMENTS=1

Default Q402 deployment. Only change for self-hosted.

Q402_RELAY_BASE_URL=https://q402.quackai.ai/api

Safety guards (max-amount ships uncommented at $200; lower for tighter caps):

Q402_MAX_AMOUNT_PER_CALL=200

Q402_ALLOWED_RECIPIENTS=0xabc...,0xdef...

Pre-check (automatic trust-check before outgoing payments in live mode).

Triggers when paying a first-time counterparty OR amount >= $1.

Fee: $0.02 per check; verdict cached 7 days (no repeat charge within TTL).

Set to 1 to disable pre-check entirely (even first-time / large-amount pays).

Q402_DISABLE_PRECHECK=0

Then chmod 600 ~/.q402/mcp.env (Unix) and restart your client. That's the full configuration. Heads up on the EIP-7702 side effect: after your first live payment on a chain, your wallet will show 'Smart account' in MetaMask / OKX - that's the delegation Q402 uses for gasless settlement, reversible anytime via q402_clear_delegation. Important for x402 users: if EIP-7702 delegation is active on an older implementation, q402_x402_fetch cannot sign x402 payments until you call q402_clear_delegation (gasless on Base, reversible — the next q402_pay re-delegates automatically). Wallets delegated to the current ERC-1271-capable implementation work normally.

Advanced - explicit env injection

If you'd rather skip the file and inject env vars yourself (e.g. via Codex env_vars allow-list, a secrets manager, or shell exports), the server falls through to process.env - and process.env wins over file values on conflicts. So existing shell-export setups keep working unchanged.

Codex env_vars allow-list example

[mcp_servers.q402]

command = "npx" args = ["-y", "@quackai/q402-mcp"] startup_timeout_sec = 20.0 env_vars = [ "Q402_TRIAL_API_KEY", "Q402_MULTICHAIN_API_KEY", "Q402_PRIVATE_KEY", "Q402_AGENTIC_PRIVATE_KEY", "Q402_AGENT_WALLET_ADDRESS", "Q402_ENABLE_REAL_PAYMENTS", "Q402_RELAY_BASE_URL", ]

Then export the values in ~/.zshrc / ~/.bashrc. See the Codex config reference for the full schema.

Try it without any setup

q402_quote works with zero configuration - no API key, no private key, no env file. Ask:

*"Compare gas costs to send 50 USDC to vitalik.eth across all 12 Q402 chains."*

Q402_RELAY_BASE_URL overrides the relay endpoint. Set it explicitly when running against a self-hosted Q402 deployment or a non-canonical environment.

Tools exposed

52 tools, grouped by capability. Read-only by default; live mode needs a live API key, a signing path, and Q402_ENABLE_REAL_PAYMENTS=1. Rows marked live mode move funds and need an explicit in-chat confirmation.

Tool	Auth	Purpose
Payments & wallet
`q402_doctor`	none	First-install onboarding + ongoing health check (per-scope quota, EIP-7702 state, relay reachability, slot-mismatch warnings).
`q402_quote`	none	Compare gas + supported tokens across chains.
`q402_balance`	api key	Verify key + remaining quota.
`q402_pay`	live mode	Single-recipient gasless transfer. Sandbox by default. In live mode, automatically runs a trust-check ($0.02) on the recipient before each payment when it is a first-time counterparty or the amount ≥ $1; verdict cached 7 days (no double-charge within TTL). Degrades to free basic verdict only when wallet balance exactly covers the transfer but not the $0.02 fee, or when only a non-USDC rail token is available. Pre-check never blocks the main transaction. Disable with `Q402_DISABLE_PRECHECK=1`.
`q402_batch_pay`	live mode	Up to 20 recipients per call. Trial: 5 - applies when paying with your own key (Mode A/B); server-managed Agent Wallet (Mode C) batch is paid Multichain-only. Same auto-routing as `q402_pay`. 6+ BNB batches with Trial set return `status="ambiguous"` so the agent asks how to split. xlayer + stable not batchable - use `q402_pay` in a loop.
`q402_receipt`	none	Fetch + locally verify a Trust Receipt (`rct_…` id, ECDSA against the relayer EOA).
`q402_wallet_status`	private key	Per-chain EIP-7702 state for the EOA derived from `Q402_PRIVATE_KEY`.
`q402_clear_delegation`	private key / api key	Clear EIP-7702 delegation (Mode A/B local key OR Mode C api key, server-signed). Sponsored on every chain except Ethereum (billed to your Gas Tank). Two-phase consent (`consentToken`).
`q402_agentic_info`	api key	Agent Wallet info (addresses, per-wallet caps, daily-spend used, ERC-8004 id). Drives Mode C.
Treasury memory
`q402_memory_summary`	api key	Treasury overview over a window: USD-stablecoin spend by chain/source, top vendors, schedules, open requests/escrow, failures. Read-only.
`q402_vendor_history`	api key	Total paid to one vendor (or a vendor leaderboard) with recurring cadence. Read-only.

| q402_agent_spend_report | api ke

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Q402 MCP

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@quackai/q402-mcp

Quick start

1. Register the server

2. First-time setup

Pick a signing mode

Manual setup (no AI)

── API key (pick one or both for auto-routing) ──

── Signing path - pick ONE of Mode A / B / C ──

Mode A: your MetaMask EOA's hex private key.

Hardware wallets (Ledger / Trezor) are NOT supported here - Q402

needs a raw hex key it can sign EIP-7702 type-4 authorizations with.

Mode B: exported Agent Wallet pk from the dashboard. Keeps your

MetaMask untouched. Get it at:

https://q402.quackai.ai/dashboard → Agent tab → Export

Mode C: no PK needed. A Trial key also enables Mode C one-shot payments;

leave both PK lines blank. Q402 signs with the server-managed Agent Wallet.

Multichain key required for recurring, Mode C batch, and bridge/OFT.

Optional: pin one of your Agent Wallets when you have multiple (max 10).

Q402_AGENT_WALLET_ADDRESS=0x...

Live mode switch:

0 = sandbox (test mode, no funds move)

1 = real on-chain payments

Default 1 - safe because mode only flips to live when an API key AND

at least one valid signing path (A/B/C) are populated above.

Default Q402 deployment. Only change for self-hosted.

Safety guards (max-amount ships uncommented at $200; lower for tighter caps):

Q402_ALLOWED_RECIPIENTS=0xabc...,0xdef...

Pre-check (automatic trust-check before outgoing payments in live mode).

Triggers when paying a first-time counterparty OR amount >= $1.

Fee: $0.02 per check; verdict cached 7 days (no repeat charge within TTL).

Set to 1 to disable pre-check entirely (even first-time / large-amount pays).

Q402_DISABLE_PRECHECK=0

Advanced - explicit env injection

Try it without any setup

Tools exposed