NERO Chain Documentation
Layer-1 blockchain · native account abstraction · paymaster gas sponsorship · Web2-friendly login
NERO Chain is a Layer-1 blockchain with native account abstraction, paymaster-based gas sponsorship, and Web2-friendly authentication (social logins, password-based security, MetaMask). These docs cover the protocol architecture, developer tools, and integration tutorials in both English and Japanese.
Read the docs
What you can build
- Gasless dApps — sponsor your users' transactions via the Paymaster API (Type 0).
- Pay gas in any ERC-20 — Type 1 prepay or Type 2 postpay, with automatic price discovery.
- Web2-style onboarding — social login + password recovery via the AA Wallet UI.
- Your first contract — deploy ERC-20/ERC-721 to NERO testnet with Hardhat or Remix.
- Run a validator — see the Node Validators section.
Key facts
- Native token: NERO
- EntryPoint (ERC-4337) contract:
0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789 - Paymaster API methods:
pm_supported_tokens,pm_sponsor_userop,pm_entrypoints - Payment types: 0 (sponsored / free), 1 (prepay ERC-20), 2 (postpay ERC-20)
- Testnet faucet + explorer: see FAQ
- AA Platform (API keys, quotas): aa-platform.nerochain.io
For AI agents
NERO docs ship a full machine-readable surface. See the AI resources hub for MCP install snippets (Claude Code, Claude Desktop, Cursor, VS Code, ChatGPT, Codex) and download links.
| Resource | Path | Format |
|---|---|---|
| Curated index | /llms.txt | text/plain |
| Full corpus | /llms-full.txt | text/plain |
| Page-per-line JSON | /llms-full.jsonl | application/jsonl |
| Site index | /site-index.json | application/json |
| Paymaster OpenAPI | /openapi.yaml | application/yaml |
| MCP server | docs-mcp.nerochain.io | MCP (HTTP) |
| MCP server card | /.well-known/mcp/server-card.json | application/json |
FAQ
- Is NERO Chain an L2?
- NERO is a Layer-1 blockchain. It runs its own consensus and settlement, and includes native account abstraction at the protocol level.
- What's the testnet RPC endpoint?
https://rpc-testnet.nerochain.io. See the Cookbook for chain ID and faucet instructions.- How much does gas cost?
- Gas is paid in NERO. dApps can sponsor user gas (Type 0) or let users pay in any supported ERC-20 (Type 1 / Type 2). See /pricing.md.
- How do I authenticate as an agent?
- Get an API key from the AA Platform dashboard and send it as
X-API-Key. See the Agent Auth Guide.