MultichainAPI.com
Big builder energy. Zero guesswork.

Big ideas.
Meet
multichain.

Your friendly starting point for blockchain APIs. Explore Ethereum, Solana, and Bitcoin with clear guides, practical examples, and fewer rabbit holes.

Start buildingExplore the networks
Read-only examplesNo wallet neededOpen guides
your-next-build / request.json

READ-ONLY EXAMPLE / eth_getBalance

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_getBalance",
  "params": [
    "0x0000000000000000000000000000000000000000",
    "latest"
  ]
}
Example only · no live request
Pick your starting point

Different chains.
Same builder spirit.

Learn the network before you write the adapter.
A clear mental model makes all the difference.

All network guides
EVM / ETH

Ethereum

Read native balances, inspect blocks, and explore contract-aware data.

eth_getBalance · eth_call
Explore Ethereum API
SVM / SOL

Solana

Keep accounts, lamports, and commitment context in the picture.

getBalance · getAccountInfo
Explore Solana API
UTXO / BTC

Bitcoin

Follow transactions and outputs without losing the UTXO perspective.

getblockchaininfo · gettxout
Explore Bitcoin API

Networks covered in our guides · Bring your own node or API provider.

Less friction. More understanding.

Good foundations. Great possibilities.

Meet the developer hub

Make the first request click.

Small examples with clear parameters. Understand what you are asking before plugging in an endpoint.

Connect ideas, not assumptions.

Shared interfaces are useful. So are the differences between accounts, tokens, slots, blocks, and outputs.

Build beyond the happy path.

Keep keys private, handle partial failures, and give retries a budget. The thoughtful details belong in version one.

Wallet-aware. User-first.

Know the wallet.
Respect the permission.

Explore connection patterns for Phantom, Trust Wallet, and MetaMask. Keep reading data separate from signing transactions.

Explore wallet integration

Integration resources, not partnerships. No wallet connection is requested here.

PhantomINTEGRATION GUIDE ↗Trust WalletINTEGRATION GUIDE ↗MetaMaskINTEGRATION GUIDE ↗
Builder Notes / The blog

A little knowledge.
A lot of possibility.

Practical reads for your next “how does this work?” moment.

Explore all 10 articles
Good questions, clear answers

Before you
dive in.

No mystery buttons.
No invisible promises.
Just a clearer place to start.

More about this site
What is MultichainAPI.com?

An independent developer resource covering multichain architecture, blockchain API concepts, and practical read-only examples. Start with the documentation hub.

Can I get a hosted API key here?

No. This website does not issue API keys or operate a hosted RPC endpoint. Use your own node or chosen provider with the examples. The cost-planning guide helps you evaluate infrastructure.

Which networks do the guides cover?

The core network guides cover Ethereum, Solana, and Bitcoin. These are educational coverage labels, not a list of networks operated by this website.

Do I need to connect a wallet?

No. The site does not request wallet connections, signatures, recovery phrases, or private keys. Wallet pages explain integration boundaries for applications you build.

Do the code examples make live requests?

The on-page example selector only displays request text. It does not contact a blockchain. The downloadable Node.js example runs a read only after you configure an endpoint in your own environment.

Where should I start?

Read the quickstart, choose one network guide, and test a single read-only feature. Add more coverage after its success and failure states are clear.

Your next idea starts here. ✨

Pick a network. Understand the request. Build something good.

Open the quickstart