Vibenet

Vibenet is Base’s devnet for EIP-8130 native account abstraction: account abstraction in the protocol itself. Accounts are portable across EVM chains, support multiple signer types (secp256k1, P-256, WebAuthn), key rotation without changing address, scoped session-key actors, on-chain policies, and native ERC-8168 gas sponsorship. The tooling lives in viem’s eip8130 module (fork branch — not yet in npm viem). Vibenet is also the first Base network running Cobalt 200ms native blocks (five canonical blocks per second, with a millisecond timestampMs on every block) — that part needs no fork, stock viem works. See references/200ms-blocks.md (opens in a new tab).

Network

The API host is api.vibes.base.org, not vibes.base.org. The bare host 302-redirects to the chain.base.org/vibenet HTML page; viem’s HTTP transport then tries to parse that as JSON and throws Unrecognized token '<', which reads like a code bug rather than a wrong URL.

All api.vibes.base.org endpoints (RPC proxy, payer, faucet) send permissive CORS headers, and so does rpc.vibes.base.org — so browser apps can talk to either. Prefer rpc.vibes.base.org for execution and reserve the account/rpc proxy for when you specifically want the hosted path. The public RPC is method-allowlisted: eth_getHeaderBy*, eth_getBlockReceipts, eth_sendRawTransactionSync, eth_simulateV1 and txpool_* answer rpc method is not whitelisted.

Only 8130 / 8168 code needs the fork below. Querying blocks, streaming newHeads, and sending plain EOA transactions on vibenet work with stock npm install viem.

The 8130 modules are additive to viem itself, proposed upstream in wevm/viem#5004 (opens in a new tab) (open, out of draft — not yet merged or released to npm). Until it ships, they have to be built from the fork branch the PR is opened from: chunter-cb/viem feat/eip-8130-production.

Use the bundled installer — it does the whole clone→build→link dance, which is error-prone by hand:

scripts/setup-viem-8130.sh [APP_DIR] [BUILD_DIR]   # APP_DIR defaults to the current directory

BUILD_DIR defaults to <APP_DIR>/.viem-8130-src — a full viem monorepo checkout with its own node_modules (~500 MB). The script appends .viem-8130-src/ to the app’s .gitignore so a git add . can’t commit it; for several apps, pass one shared BUILD_DIR outside them (npm records the file: path in package.json). Node 22 works despite the fork’s node >=24.5 engine warning.

When PR #5004 merges and a viem release ships the modules, this collapses to npm install viem@latest — the imports (viem/eip8130, viem/eip8168) and APIs are unchanged, so no code moves.

The tooling is not installable from git directly: viem’s workspace uses pnpm’s catalog: protocol, so npm install "viem@github:…" fails outright, and bun add "viem@github:…" “succeeds” but leaves you an unbuilt monorepo with no exports field. So you clone, build, then depend on the built package (which lives in viem’s src/):

git clone -b feat/eip-8130-production https://github.com/chunter-cb/viem viem-fork
cd viem-fork && npx pnpm install --ignore-scripts && npx pnpm run build

# then in your app — --install-links is required:
npm install --install-links "viem@file:../viem-fork/src"

--install-links is required. Without it npm symlinks node_modules/viem to a path outside the project root, and Turbopack/Next.js then fails with Module not found: Can't resolve 'viem' for a package that is plainly there (tsc resolves it fine, which makes it look like a bundler bug).

Then import from viem/eip8130 (and viem/eip8168 for payers). Core helpers like createPublicClient / parseEther come from plain viem — the 8130 module does not re-export them.

Set "target": "ES2020" or later in tsconfig.json. BigInt literals (0n) trigger TS2737 on any lower target — the check depends on target, not lib, and many generated configs still default to an older target.

Accounts Have No Deploy Step

Creating an account derives a CREATE2 address locally — synchronous, zero RPC, eth_getCode still 0x. It becomes real as a side effect of its first transaction, which carries account.createChange alongside your actual calls. There is nothing else to call. The shortest path from nothing to a deployed account is a sponsored first tx (no faucet, no funding — for a zero-value first tx; sponsorship covers gas, never value); the self-paid route needs the address funded first. Read deployment state from eth_getCode, never from optimistic local state — it decides whether the next tx carries createChange. Full lifecycle: references/eip8130-accounts.md (opens in a new tab).

Safety Guardrails

• Never commit private keys — generate throwaway keys for devnet scripts, read real ones from env vars.
• key.k1(...) builds an actor identity, not a signer — passing it (or a raw private-key hex) as signer fails with an opaque pad() TypeError. Use privateKeyToAccount(pk).
• Verify config changes by on-chain read-back (isActor / getConfigSequence), never by receipt logs or status: success — a skipped authorize is silent.
• Read the live config sequence right before signing — a hardcoded sequence causes silent no-ops.

Task Routing

Read the reference for your task:

Operating Procedure

1. Classify the task using the table above and read the relevant reference before implementing.
2. Pick the right RPC: rpc.vibes.base.org works from both Node and the browser; wss://rpc.vibes.base.org/ws for subscriptions; api.vibes.base.org/api/vibenet/account/rpc is the hosted proxy to the same chain. Never vibes.base.org — that host is not an API.
3. Implement with explicit chain id, the scripts/setup-viem-8130.sh install (8130/8168 only), read-back verification for any account-config change, and an explicit pollingInterval (≈100ms) on every receipt wait or block watch — viem’s defaults (4000ms, or a 500ms floor) hide the 200ms cadence.
4. Deliver runnable code, install commands, and any manual steps (env vars, faucet funding).

For Edge Cases and Latest API Changes

• EIP-8130 spec: eip.tools/eip/8130 (opens in a new tab) (payer standard: eip.tools/eip/8168 (opens in a new tab))
• viem fork: chunter-cb/viem feat/eip-8130-production (opens in a new tab) (upstream PR: wevm/viem#5004 (opens in a new tab); API surface: src/eip8130/index.ts; docs: site/pages/eip8130)
• Deep guide (chaptered): github.com/chunter-cb/eip-8130-web (/guide/*)
• Session-key walkthrough (names are stale — map to8130Account → toAccount, isActor8130 → isActor, sendCalls → sendTransaction; its managerActor step is the PolicyManager-as-operator authorize in the session reference): gist.github.com/chunter-cb/bf70c53a5ab6d8361ce7f4215b776114 (opens in a new tab)
• 200ms blocks (Cobalt): docs.base.org/upgrades/cobalt/200ms-blocks (opens in a new tab), migrate-from-flashblocks (opens in a new tab), test-on-vibenet (opens in a new tab)

Installation

npx skills add base/skills --skill vibenet