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Q402 MCP server

by quackai-org·io.github.quackai-org/q402-mcp·v0.11.34·1 stars
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Q402 - gasless payments, yield, escrow, bridge & NAV triggers on 12 EVM chains. Sandbox-default.

A85/100grade A
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Safety scan
A85/100

not scanned yet

Adoption
Growing

1 stars634 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Q402 tools

No tool declarations could be read from the package source. They show once the server is installed.

Not scanned yet. New listings are scanned within a day or two of arriving.

How Q402 compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
85/100
higher than 70% of 48,255 servers
GitHub stars
1
more than 65% of 28,688 servers
Downloads a week
634
more than 91% of 12,191 servers with a package

Release history: 3 versions in the registry since 2026-08-19, latest 2026-11-03, typically one every 70 days.

Install Q402 in Claude Code, Cursor or VS Code

Runs npx -y @quackai/q402-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add q402-mcp -- npx -y @quackai/q402-mcp
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What the publisher says

From the Q402 repository's README, as published. We do not edit it. Read it on GitHub

@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: .

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 TRIALBNBONLY 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

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

1. Register the server

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

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Q402: common questions

Is Q402 MCP server safe?
Yes, by our scan: it is graded A (85/100). Read the Q402 safety report
How do I install Q402?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Q402 need an API key?
Yes. The registry entry asks for Q402_TRIAL_API_KEY, Q402_MULTICHAIN_API_KEY, Q402_PRIVATE_KEY, Q402_AGENTIC_PRIVATE_KEY and 1 more.
Is Q402 maintained?
The last commit was 8 days ago (2026-10-27). The latest release is v0.11.34.
How does Q402 compare with other MCP servers?
safety score 85/100 (higher than 70% of 48,255 servers); github stars 1 (more than 65% of 28,688 servers); downloads a week 634 (more than 91% of 12,191 servers with a package). Full comparison.