How to Add Blast to MetaMask in 2026 – RPC Setup Guide

Blast is one of the more talked-about Ethereum Layer 2 networks, and to use it, your wallet needs to know it exists. MetaMask does not ship with every new network pre-installed, so before you can hold ETH, swap tokens, or explore apps on Blast, you have to add the network first. The good news: it takes about two minutes once you know the right parameters.

This guide walks you through adding Blast to MetaMask in 2026 — both the quick one-click method and the manual RPC setup, so you can pick whichever you trust more. You will learn the correct network details, how to double-check them before approving anything, how to confirm the network was added properly, and how to fix the most common mistakes.

id=”what-is-blast”>What Blast Is and Why People Use It

Blast is an Ethereum Layer 2 (L2) network — a separate blockchain that sits on top of Ethereum and inherits its security, while handling transactions more cheaply and quickly than the main Ethereum network. It is built on the same general technology family as several other popular Layer 2s (sometimes called the “OP Stack”), which means that if you have used networks like Optimism or Base, Blast will feel familiar: the same wallet addresses work, the same kinds of apps exist, and the same gas currency — ETH — pays for transactions.

What made Blast stand out at launch was “native yield”: ETH and certain stablecoins bridged to the network were designed to earn yield automatically through rebasing balances, so your balance could grow without staking or locking anything up. Yields move with market conditions, so treat any advertised rate as a moving number rather than a promise.

As of this guide’s writing, the agreed facts are: chain ID 81457, native gas currency ETH (18 decimals), public RPC rpc.blast.io, and block explorer Blastscan at blastscan.io. These are for Blast mainnet — a Sepolia testnet exists too, but it is for developers. Network details can change, so always cross-check against Blast’s official documentation or a reputable chain directory before approving them, and never take values from a random social media post.

Why Add Blast to MetaMask

Some bridge sites and apps can prompt MetaMask to add Blast automatically when you first connect. That works — and this guide covers it — but adding the network yourself, deliberately, has real advantages.

First, you know exactly what you approved. Adding a network manually means you see the chain ID, RPC URL, and currency symbol before clicking anything — one of the best defenses against a common scam: a malicious site asking you to add a fake network so it can intercept what you see and sign. Knowing the correct values (chain ID 81457, ETH) lets you spot a mismatch instantly.

Second, it unlocks the full wallet experience: see your Blast ETH balance directly, send and receive funds, import tokens, and use any Blast app without being bounced back to a bridge site first. Switching networks becomes a two-click habit — our guide on how to switch networks in MetaMask safely covers the routine in more detail.

Finally, a saved network does not depend on any single website. Sites go down and domains change hands; a network you added yourself through verified parameters stays in your wallet regardless — which matters when you need to move funds and cannot hunt for a working bridge page.

What You Need Before You Start

The checklist is short — have these ready and the process takes under five minutes.

• MetaMask installed. The browser extension or the mobile app. This guide describes the desktop layout, but the mobile steps are nearly identical.
• Your wallet unlocked and backed up. You need no funds to add a network, but your seed phrase should already be stored offline. Adding a network never requires your seed phrase — if anything asks for it, stop immediately.
• The correct Blast parameters. As of this guide’s writing: Network name Blast, RPC URL https://rpc.blast.io, chain ID 81457, currency symbol ETH, block explorer https://blastscan.io. You will cross-check these below.
• A few unhurried minutes. Most mistakes — approving the wrong chain ID, adding a network from a phishing site, pasting an RPC URL from a random forum — happen when people rush. Slow down for two minutes and you will avoid nearly all of them.

If you have never added a custom network before, the pattern is identical across chains — our walkthrough for adding Polygon to MetaMask uses exactly the same clicks.

Method 1: The One-Click Auto-Add Method

The fastest way to add Blast is to let a trusted site or directory propose the network to your wallet, which then shows you the details for approval. Here is how to do it safely.

1. Open a reputable network directory. The best-known option is Chainlist — type its address (chainlist.org) into your browser yourself rather than clicking a link from anywhere else. Chainlist is a community-maintained directory of EVM networks with their verified parameters.
2. Search for “Blast.” Type Blast into the search box. You should see the mainnet entry — double-check that it says chain ID 81457 before going further. If you see multiple Blast entries, pick the one labeled as the mainnet, not a testnet.
3. Connect your wallet. Click the connect-wallet button on the directory and approve the connection in MetaMask. This only connects the site to your wallet — it does not move any funds or change any settings yet.
4. Click “Add to Wallet” (or similar). MetaMask will open an approval window showing the network details: the RPC URL, chain ID, currency symbol, and block explorer. Read every field. Confirm the chain ID is 81457 and the currency is ETH.
5. Approve. If everything matches, click approve. MetaMask will add Blast and usually offer to switch to it right away.

The key safety habit is reading the approval screen instead of blindly clicking through — it exists so you can catch wrong or tampered values before they enter your wallet. Many reputable Blast apps offer the same one-click prompt when you connect; the same rule applies: read the details, then approve.

Method 2: Manual RPC Setup, Step by Step

If you prefer to type the values in yourself — or if the one-click method is not available where you are — the manual route takes about a minute longer and gives you full control. Here is the exact sequence in the MetaMask browser extension, as of this guide’s writing (menu labels shift slightly between versions, but the flow stays the same).

1. Open MetaMask and click the network dropdown. This is the colored circle or network name at the top-left of the extension window. Clicking it opens your network list.
2. Click “Add network” then “Add a network manually.” The automatic list comes first; look for the option to add one manually, which opens a form with empty fields.
3. Fill in the Blast parameters:
   • Network name: Blast
   • RPC URL: https://rpc.blast.io
   • Chain ID: 81457
   • Currency symbol: ETH
   • Block explorer URL (optional but recommended): https://blastscan.io
4. Save. MetaMask will validate the chain ID by contacting the RPC. If you mistyped something, it will usually complain here — which is a feature, not a bug.
5. Switch to Blast. Once saved, Blast appears in your network dropdown. Select it whenever you want to use the network.

A few notes. The RPC URL is the address your wallet uses to read the blockchain and broadcast transactions; public RPCs can be slow or rate-limited at busy times, so some users later switch to a private provider. The explorer field is optional — the network works without it — but it adds a convenient “view on explorer” link. And the chain ID is the most important field: it is the network’s unique fingerprint, and if a site ever proposes Blast with a different one, do not approve it.

If any of these values ever look different in a current directory or in Blast’s official docs, trust the current official source over this guide. Parameters do occasionally change, and the two-minute cross-check is always worth it.

One-Click vs Manual: Which Should You Choose?

Both methods end with Blast saved in your MetaMask network list. The differences are about speed, control, and trust — this comparison should help you decide.

Either choice is fine: beginners usually do best with one-click (no typo risk), while cautious users often prefer manual entry. What matters is not the method — it is verifying the values (chain ID 81457, ETH) before you finish.

How to Verify Blast Was Added Correctly

Adding the network is half the job; confirming it works is the other half. Run these checks before sending real funds.

1. Check the network list. Open the network dropdown and confirm “Blast” appears, with ETH shown as the currency. If you see it, the save succeeded.
2. Switch to Blast and look at your balance. Your address on Blast is the same as your Ethereum address (same private key, different network). If you have previously bridged funds to Blast, they should appear once you switch. If you have never used Blast, the balance will simply be zero — that is normal, not an error.
3. Send a test look-up, not a test transaction. Open the block explorer — type blastscan.io into your browser yourself — and paste your wallet address into its search box. If the explorer shows your address with its Blast transaction history (or a clean empty page for a fresh address), your wallet and the explorer agree on which network you are looking at.
4. Try a tiny transaction first. When you do move funds to Blast, start with a small amount. Confirm it arrives, then move the rest. This is the single best habit in all of crypto, and it costs you a few cents of extra gas.

Common Mistakes and How to Fix Them

Almost everyone hits at least one of these at some point. None of them are catastrophic, and all of them are fixable.

Mistake 1: Approving a network with the wrong chain ID. If a website proposes “Blast” with any chain ID other than 81457, do not approve it — an attacker-controlled network can show fake balances and trick you into signing malicious transactions. If you already approved a suspicious network, delete it in network settings. Your funds on the real Blast are unaffected; they live on the blockchain, not in the network entry.

Mistake 2: Adding the testnet instead of mainnet. Blast has a Sepolia testnet with a different chain ID, and testnet tokens are worthless. If your balance shows zero when you expected funds, check that you are on Blast mainnet (81457), not the testnet.

Mistake 3: Typing the chain ID in the wrong format. MetaMask accepts the chain ID in decimal (81457); some sources list it in hexadecimal (0x13E31). If MetaMask rejects your entry, check which format it wants — the most common reason manual setups fail validation.

Mistake 4: Using an RPC URL from an untrusted source. A malicious RPC endpoint can lie to your wallet about balances and pending transactions, setting you up for phishing. Stick to the widely documented public endpoint or a reputable private provider, and distrust RPC URLs shared in social media comments, DMs, or unofficial forums. The same verification habit in our Soneium setup guide applies here word for word.

Mistake 5: Panicking about a zero balance. A zero balance usually means something boring: the wrong network selected (check the dropdown), no funds bridged yet (bridging is a separate step), or a stale RPC response (switch networks and back to refresh). None of these mean your funds are gone.

FAQs

The Bottom Line

Adding Blast to MetaMask is one of the simplest tasks in crypto: pick the one-click method or type in five fields, verify the chain ID is 81457, and confirm everything works before moving funds. The verification habits you build — reading approval screens, typing addresses yourself, testing with small amounts — will protect you on every network you ever add.

Once Blast is saved, the network is yours to explore without depending on any single website to reach it. Remember that setup and funding are separate steps: adding the network connects you, and bridging ETH gets you moving.

This guide is for education only — not financial advice.