How do I install the B402 Private Defi skill?

Run npx skillmds@latest add lord1egypt/b402-private-defi in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is B402 Private Defi safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: makes network calls, reads secrets. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with B402 Private Defi?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is B402 Private Defi free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published B402 Private Defi?

Lord1Egypt (@lord1egypt) published this skill. Their other Agent Skills are listed on their SkillMD profile.

B402 Private Defi by lord1egypt — Agent Skill

Name: B402 Private Defi
Rating: 4.2 (5 reviews)
Author: Lord1Egypt

B402 Private Defi

Private DeFi for AI agents. Shield tokens into a Railgun ZK privacy pool, swap privately, lend into Morpho vaults for yield, and bridge cross-chain via LI.FI — all gasless and untraceable. Supports Base, Arbitrum, BSC.

Lord1Egypt Updated Sep 8, 2026 2 repo stars

File contents

b402 — Private DeFi for AI Agents

Shield. Swap. Lend. Bridge. All private. All gasless.

b402 wraps Railgun's ZK privacy pool with an agent-friendly SDK and MCP server. On-chain observers see "RelayAdapt called a DEX" — not your wallet, not your strategy.

Install

npx b402-mcp@latest --claude

This generates a wallet at ~/.b402/wallet.json, patches your Claude Desktop config, and registers the MCP server. Fund the wallet with USDC on Base to start.

Tools

Tool	What it does
`check_pool_balance`	Show shielded balances, wallet state, vault positions
`shield_usdc`	Move USDC into the Railgun privacy pool (gasless)
`private_swap`	Swap tokens inside the pool via ZK proof (USDC↔WETH, etc.)
`lend_privately`	Deposit into Morpho vault from pool (~4-8% APY)
`redeem_privately`	Withdraw from Morpho vault back to pool
`cross_chain_privately`	Private cross-chain transfer or swap via LI.FI (Base→Arb, etc.)
`get_swap_quote`	Preview swap rates without executing
`run_strategy`	Multi-step: swap + lend + reserve in one call

Example prompts

"Check my privacy pool balance"
"Shield 5 USDC into the pool"
"Swap 2 USDC to WETH privately"
"Privately send 1 USDC to 0xABC... on Arbitrum"
"Private cross-chain swap: 1 USDC from pool to ARB on Arbitrum, to 0xABC..."
"Lend 10 USDC in the steakhouse vault"
"Run a yield strategy: 30% WETH, 50% lend, 20% reserve"

How it works

Agent prompt → MCP tool call → b402-sdk
  → Railgun ZK proof (client-side, 10-30s)
  → RelayAdapt atomic tx (unshield → DeFi op → reshield)
  → On-chain: only RelayAdapt visible. No wallet linked.

Cross-chain: LI.FI routes through ~30 bridges + ~20 DEXes. Source and destination are unlinkable.

Supported chains

Chain	ID	Privacy pool	Cross-chain
Base	8453	Yes (0% fee)	Source + dest
Arbitrum	42161	Yes (0% fee)	Dest only (v1)
BSC	56	Yes (0% fee)	Dest only (v1)

SDK usage (for builders)

import { B402 } from '@b402ai/sdk'

const b402 = new B402({ privateKey: process.env.WORKER_PRIVATE_KEY! })

// Shield into privacy pool (gasless)
await b402.shieldFromEOA({ token: 'USDC', amount: '10' })

// Private swap inside pool
await b402.privateSwap({ from: 'USDC', to: 'WETH', amount: '5' })

// Private cross-chain (LI.FI routing)
await b402.privateCrossChain({
  toChain: 'arbitrum',
  fromToken: 'USDC',
  toToken: 'ARB',
  amount: '1',
  destinationAddress: '0x...',
})

// Private lend (Morpho vaults, 4-8% APY)
await b402.privateLend({ amount: '10', vault: 'steakhouse' })

Links

SDK: npmjs.com/package/@b402ai/sdk
MCP: npmjs.com/package/b402-mcp
Starter: github.com/b402-ai/b402-starter
Agent template: github.com/b402-ai/b402-agent-starter

---name: b402-private-defidescription: Private DeFi for AI agents. Shield tokens into a Railgun ZK privacy pool, swap privately, lend into Morpho vaults for yield, and bridge cross-chain via LI.FI — all gasless and untraceable. Supports Base, Arbitrum, BSC.---# b402 — Private DeFi for AI Agents**Shield. Swap. Lend. Bridge. All private. All gasless.**b402 wraps Railgun's ZK privacy pool with an agent-friendly SDK and MCP server.On-chain observers see "RelayAdapt called a DEX" — not your wallet, not your strategy.## Install```bashnpx b402-mcp@latest --claude```This generates a wallet at `~/.b402/wallet.json`, patches your Claude Desktop config, and registers the MCP server. Fund the wallet with USDC on Base to start.## Tools| Tool | What it does ||---|---|| `check_pool_balance` | Show shielded balances, wallet state, vault positions || `shield_usdc` | Move USDC into the Railgun privacy pool (gasless) || `private_swap` | Swap tokens inside the pool via ZK proof (USDC↔WETH, etc.) || `lend_privately` | Deposit into Morpho vault from pool (~4-8% APY) || `redeem_privately` | Withdraw from Morpho vault back to pool || `cross_chain_privately` | Private cross-chain transfer or swap via LI.FI (Base→Arb, etc.) || `get_swap_quote` | Preview swap rates without executing || `run_strategy` | Multi-step: swap + lend + reserve in one call |## Example prompts- "Check my privacy pool balance"- "Shield 5 USDC into the pool"- "Swap 2 USDC to WETH privately"- "Privately send 1 USDC to 0xABC... on Arbitrum"- "Private cross-chain swap: 1 USDC from pool to ARB on Arbitrum, to 0xABC..."- "Lend 10 USDC in the steakhouse vault"- "Run a yield strategy: 30% WETH, 50% lend, 20% reserve"## How it works```Agent prompt → MCP tool call → b402-sdk → Railgun ZK proof (client-side, 10-30s) → RelayAdapt atomic tx (unshield → DeFi op → reshield) → On-chain: only RelayAdapt visible. No wallet linked.```Cross-chain: LI.FI routes through ~30 bridges + ~20 DEXes. Source and destination are unlinkable.## Supported chains| Chain | ID | Privacy pool | Cross-chain ||---|---|---|---|| Base | 8453 | Yes (0% fee) | Source + dest || Arbitrum | 42161 | Yes (0% fee) | Dest only (v1) || BSC | 56 | Yes (0% fee) | Dest only (v1) |## SDK usage (for builders)```typescriptimport { B402 } from '@b402ai/sdk'const b402 = new B402({ privateKey: process.env.WORKER_PRIVATE_KEY! })// Shield into privacy pool (gasless)await b402.shieldFromEOA({ token: 'USDC', amount: '10' })// Private swap inside poolawait b402.privateSwap({ from: 'USDC', to: 'WETH', amount: '5' })// Private cross-chain (LI.FI routing)await b402.privateCrossChain({ toChain: 'arbitrum', fromToken: 'USDC', toToken: 'ARB', amount: '1', destinationAddress: '0x...',})// Private lend (Morpho vaults, 4-8% APY)await b402.privateLend({ amount: '10', vault: 'steakhouse' })```## Links- SDK: [npmjs.com/package/@b402ai/sdk](https://npmjs.com/package/@b402ai/sdk)- MCP: [npmjs.com/package/b402-mcp](https://npmjs.com/package/b402-mcp)- Starter: [github.com/b402-ai/b402-starter](https://github.com/b402-ai/b402-starter)- Agent template: [github.com/b402-ai/b402-agent-starter](https://github.com/b402-ai/b402-agent-starter)

Frequently asked questions