Arc Testnet RPC

Operated by Canteen.

Canteen runs a public JSON-RPC node for the Arc testnet. It is built for agentic use: one CLI gets a coding agent from zero to building on Arc — log in, get an RPC key, make RPC calls, post product & traction updates, and pull in developer docs plus working Arc example codebases as context.

Network details

Getting an RPC key

The <key> in the RPC URL is issued per developer. Install the Canteen CLI and sign in with your GitHub handle:

uv tool install git+https://github.com/the-canteen-dev/ARC-cli.git
arc-canteen login

Then print your personal RPC URL (with the key embedded), or have it exported as $RPC in every shell:

arc-canteen rpc-url            # print https://rpc.testnet.arc-node.thecanteenapp.com/v1/<key>
arc-canteen rpc-url --export   # eval-able: export RPC=...
arc-canteen shell-init         # rc snippet that auto-loads $RPC

You can also fire JSON-RPC calls straight from the CLI without wiring up a client:

arc-canteen rpc eth_blockNumber
arc-canteen rpc eth_chainId

Agent context: docs & working Arc examples

The CLI doubles as a context provider for coding agents. It can dump an AGENTS.md with paths to everything, and sync a bundle of developer documentation for Arc + Circle alongside several runnable sample codebases (from the-canteen-dev/context-arc):

arc-canteen context        # print AGENTS.md + paths to docs and samples
arc-canteen context sync   # clone/pull docs + Arc example repos into ~/.arc-canteen/context/

Point your agent at ~/.arc-canteen/context/ and it has the Arc/Circle docs and real example projects to work from. Re-run context sync to pull the latest.

Product & traction updates

If you're building on Arc through Canteen, the same CLI records progress — no separate dashboard to log into:

arc-canteen update product     # submit a product update
arc-canteen update traction    # submit a traction update
arc-canteen status             # your dashboard
arc-canteen ls                 # list past updates