cyotee/permit2-addresses
.claude/skills/permit2-addresses/SKILL.md
Canonical Permit2 contract addresses by chain. Use when configuring multi-chain support.
data-ai
Updated Apr 16, 2026
$ install --global
skillsauthnpx skillsauth add cyotee/crane permit2-addressesInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
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Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
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9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
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VirusTotalMulti-engine malware detection
50%
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CrowdStrikeAdvanced threat intelligence
50%
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OSV-ScannerOpen Source Vulnerability database check
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OWASP Dep-Check
50%
Last scanned: Apr 16, 2026, 10:08 PM4.5s1 file scanned
SKILL.md
- name:
- permit2-addresses
- description:
- Canonical Permit2 contract addresses by chain. Use when configuring multi-chain support.
Permit2 Addresses
Canonical Address
All chains use the same address:
0x000000000022D473030F116dDEE9F6B43aC78BA3
By Chain ID
| Chain | Chain ID | Status | |-------|----------|--------| | Ethereum Mainnet | 1 | ✅ | | Arbitrum | 42161 | ✅ | | Optimism | 10 | ✅ | | Base | 8453 | ✅ | | Polygon | 137 | ✅ | | Avalanche | 43114 | ✅ | | BNB Chain | 56 | ✅ | | Sepolia (testnet) | 11155111 | ✅ | | Arbitrum Sepolia | 421614 | ✅ | | Base Sepolia | 84532 | ✅ | | Optimism Sepolia | 11155420 | ✅ | | Foundry (local) | 31337 | ✅ |
Usage in Code
import { PERMIT2_ADDRESS } from '@uniswap/permit2-sdk'
// Or hardcoded (canonical)
const PERMIT2 = '0x000000000022D473030F116dDEE9F6B43aC78BA3'
Dynamic Address (Optional)
import { permit2Address } from '@uniswap/permit2-sdk'
const permit2 = permit2Address(chainId)
Frontend Integration
The frontend stores addresses in:
frontend/app/addresses/{chain}/base_deployments.json
Example usage:
import platformSepolia from './app/addresses/sepolia/base_deployments.json'
import platformFoundry from './app/addresses/anvil_base_main/base_deployments.json'
const permit2Address = chainId === sepolia.id
? platformSepolia.permit2
: platformFoundry.permit2
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