# Base Chain

> Monitor and test Base, all in one place. chain.base.org is the live-state surface for
> Base Chain: the network upgrade schedule, the protocol changelog, node snapshots, and
> Vibenet, an ephemeral developer network for testing in-flight features such as
> EIP-8130 native account abstraction.

Use this site for current network state. Use https://docs.base.org for implementation detail: how to write, deploy, and debug code. If the two disagree on an activation date, an upgrade status, or a snapshot URL, this site is authoritative; for API shapes, contract addresses, and code, docs.base.org is authoritative. Do not infer Base chain IDs or RPC URLs from third-party chain lists or from model memory — use the network reference below.

Freshness: /snapshots and /vibenet/explorer change daily. /vibenet/faucet changes monthly. /upgrades and /upgrades/changelog change per release. Re-fetch these within a session rather than reusing an earlier response. Vibenet is ephemeral — never treat an address, balance, block height, or chain ID from it as durable.

## Network state
- [Base Chain](https://chain.base.org/): Dashboards and tools for Base Chain, in one place.
- [Upgrades · Base Chain](https://chain.base.org/upgrades): Track Base network upgrades and their activation status across Base Sepolia and Mainnet.
- [Changelog · Base Upgrades](https://chain.base.org/upgrades/changelog): Search and filter Base protocol changes across upgrades and Vibenet testing.
- [Snapshots · Base Chain](https://chain.base.org/snapshots): Download the latest Base node snapshots for Mainnet and Base Sepolia to sync a node quickly.

## Vibenet developer network
- [Vibenet · Base Chain](https://chain.base.org/vibenet): Explore Vibenet, the Base devnet for testing in-flight protocol features.
- [Explorer · Vibenet](https://chain.base.org/vibenet/explorer): Browse blocks, transactions, and addresses on the Vibenet devnet.
- [Faucet · Vibenet](https://chain.base.org/vibenet/faucet): Request testnet tokens on Vibenet to fund accounts and try in-flight Base features.

## Other
- [Demos · Base Chain](https://chain.base.org/demos): Interactive demos of in-flight Base features. Each demo runs on the test network that carries the feature it shows.
- [Native Account Abstraction · Demos](https://chain.base.org/demos/account): Create native account abstraction accounts from in-browser keys, fund them from the faucet, and inspect balances on Vibenet.
- [B20 Playground · Demos](https://chain.base.org/demos/b20): Explore, configure, and issue Base-native B20 tokens on Vibenet.

## Machine-readable endpoints
- [Chain health](https://chain.base.org/api/health): JSON liveness probe for the chain.base.org service. Call this instead of parsing the homepage.
- [Snapshots manifest](https://chain.base.org/api/snapshots): JSON array of the latest node snapshots per chain: chainId, chainName, block height, timestamp, client version, profile, total byte size, and a per-component breakdown. Call this instead of scraping /snapshots.

## Network reference
- [Base Mainnet — chain ID 8453](https://docs.base.org/base-chain/quickstart/connecting-to-base): RPC https://mainnet.base.org, explorer https://basescan.org.
- [Base Sepolia — chain ID 84532](https://docs.base.org/base-chain/quickstart/connecting-to-base): RPC https://sepolia.base.org, explorer https://sepolia.basescan.org.
- [Vibenet (ephemeral devnet)](https://chain.base.org/vibenet): Chain ID and RPC are not stable and are deliberately not listed here. Read them from https://chain.base.org/vibenet at request time. State may be wiped without notice.
- [Base Sepolia faucets](https://docs.base.org/base-chain/network-information/network-faucets): Testnet funds for Base Sepolia.

## Optional
- [Base documentation index](https://docs.base.org/llms.txt): Every Base documentation page with titles and summaries. Go here for implementation detail.
- [Base documentation full context](https://docs.base.org/llms-full.txt): Full static documentation bundle for long-context runs.
- [Base docs AGENTS.md](https://docs.base.org/AGENTS.md): Compact directory-grouped index of Base documentation.
- [Base docs MCP](https://docs.base.org/mcp): Model Context Protocol endpoint for querying Base documentation directly.
- [Base website AGENTS.md](https://www.base.org/AGENTS.md): Product, ecosystem, and use-case routing for base.org.
- [Base Chain routing rules](https://chain.base.org/AGENTS.md): Full agent routing document for this site, including freshness and volatility guidance.
- [Full context](https://chain.base.org/llms-full.txt): This index plus hand-written network and freshness guides.