What is the Avalanche RPC URL?

The Avalanche C-Chain RPC URL with BoltRPC is https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/avax. Replace YOUR_API_KEY with your API key from dashboard.boltrpc.io. The chain ID is 43114.

How do I add Avalanche to MetaMask?

Open MetaMask, go to Settings, then Networks, then Add Network and enter: Network Name: BoltRPC Avalanche, RPC URL: https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/avax, Chain ID: 43114, Currency Symbol: AVAX, Block Explorer: https://snowscan.xyz.

What is the Avalanche C-Chain?

Avalanche has three chains: the C-Chain (Contract Chain), X-Chain (Exchange Chain) and P-Chain (Platform Chain). The C-Chain is the EVM-compatible chain where smart contracts and DeFi protocols run. When developers refer to Avalanche RPC, they mean the C-Chain.

What is sub-second finality on Avalanche?

Avalanche uses the Snowman consensus protocol, which achieves transaction finality in under one second. Finality means the transaction is irreversible - not just included in a block, but confirmed by the network.

Does BoltRPC support WebSocket for Avalanche?

Yes. BoltRPC provides WebSocket endpoints for Avalanche at wss://endpoints.boltrpc.io/ws/YOUR_API_KEY/avax. WebSocket is used for real-time events: new blocks, transaction monitoring, contract event logs.

What is an Avalanche Subnet?

An Avalanche Subnet is an independent blockchain within the Avalanche network with its own custom validator set and rules. Enterprise teams and gaming companies launch Subnets for dedicated throughput. The C-Chain itself is a Subnet.

Why is Avalanche used for institutional DeFi?

Avalanche combines EVM compatibility, sub-second finality and a regulatory track record that institutional teams find favorable. Major DeFi protocols including Aave and Curve have deployed on Avalanche. BoltRPC adds ISO 27001:2022 certified infrastructure to that stack.

Avalanche RPC Endpoint

A dedicated Avalanche C-Chain endpoint for sub-second finality workloads: DeFi, gaming and enterprise apps that cannot wait on shared pools.

chain id · 43114JSON-RPC 2.0WebSocketDebug

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LIVE LATENCY

13ms

LIVE

gateway round-trip · sampled every second

IN PRODUCTION AT Chainlink

Your endpoint, ready in one line.

Drop this URL into your RPC client, HTTP library or wallet config. No SDK install required.

HTTPS

https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/avax

WEBSOCKET

wss://endpoints.boltrpc.io/ws/YOUR_API_KEY/avax

Replace YOUR_API_KEY with your API key. Get a free key →

Pick your stack.

Copy-paste examples for the libraries you already use. Swap the API key, hit run.

import { ethers } from "ethers";

const provider = new ethers.JsonRpcProvider(
  "https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/avax"
);

const blockNumber = await provider.getBlockNumber();
console.log("Latest block:", blockNumber);

import { createPublicClient, http } from "viem";
import { avalanche } from "viem/chains";

const client = createPublicClient({
  chain: avalanche,
  transport: http("https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/avax"),
});

const blockNumber = await client.getBlockNumber();
console.log("Latest block:", blockNumber);

curl https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/avax \
  -X POST \
  -H "Content-Type: application/json" \
  --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

Connect your dApp, bot, or protocol to Avalanche C-Chain with BoltRPC. ISO 27001:2022 certified infrastructure for enterprise and institutional Avalanche deployments, with predictable request-unit pricing that scales alongside your workload.

Chain at a Glance


Chain ID	43114
Protocol	Avalanche Consensus (C-Chain)
Block time	~2 s
Native token	AVAX
Finality	~1 s (Snowman consensus)
EVM compatible	Yes

What Avalanche is Built For

Avalanche’s C-Chain is the EVM-compatible contract chain within the Avalanche network, used for institutional DeFi, gaming subnets and enterprise blockchain deployments. Aave, Curve and other major DeFi protocols operate on Avalanche. The Avalanche Foundation actively funds ecosystem growth through grants and developer programs. Avalanche’s subnet architecture allows enterprises to launch their own blockchains with custom validator sets, while the C-Chain serves as the primary DeFi and developer-facing chain. The combination of sub-second finality and EVM compatibility makes Avalanche attractive for financial applications that need both speed and security guarantees.

Developer Notes for Avalanche C-Chain

Avalanche is not a single chain. The network has three native chains: the C-Chain (Contract Chain) for EVM smart contracts, the X-Chain (Exchange Chain) for asset transfers using Avalanche’s UTXO model, the P-Chain (Platform Chain) for staking and subnet management. When developers say “Avalanche RPC”, they mean the C-Chain only. The X-Chain and P-Chain use distinct Avalanche-native APIs that are not JSON-RPC compatible. BoltRPC’s Avalanche endpoint connects to the C-Chain at chain ID 43114.

Avalanche Subnets are independent blockchains with their own validator sets, launched on the Avalanche network. Many Subnets are EVM-compatible, meaning they support the same JSON-RPC interface as the C-Chain but use a different chain ID. If you are building on a specific Subnet rather than the main C-Chain, verify the Subnet’s chain ID and endpoint separately. Subnet RPC access is not the same as C-Chain access.

The Snowman consensus protocol gives the C-Chain sub-second transaction finality under normal conditions. This is materially different from Ethereum, where transactions take 12 to 13 minutes to reach cryptographic finality. For applications that rely on finality guarantees, Avalanche’s speed means shorter confirmation windows, but you should confirm finality via the chain state, not just by block inclusion.

Common Use Cases on Avalanche

Institutional DeFi on the C-Chain Lending and stablecoin protocols poll price feeds, collateral ratios and positions continuously. Sub-second finality only helps if the RPC layer answers at the same speed.

Gaming subnets and their C-Chain bridges Game studios on Avalanche subnets settle assets and payouts through the C-Chain. Bridge watchers and payout services confirm transactions in real time, a workload that turns into support tickets when reads lag.

Enterprise and tokenization deployments Tokenized asset issuers and enterprise pilots reconcile balances and transfer history on a schedule. Predictable request-unit pricing puts a fixed number on a reporting job before it runs.

Wallets and portfolio trackers Balance displays and transaction history call eth_getBalance, eth_call and eth_getLogs for every user session. Choosing a provider that sustains that read volume is the difference between a balance that updates and one that spins.

Built for teams that ship on Avalanche.

ISO 27001:2022 for enterprise and institutional deployments

Avalanche attracts institutional DeFi protocols and enterprise blockchain projects that require certified infrastructure. BoltRPC runs on Matrixed.Link's ISO/IEC 27001:2022 certified node infrastructure, providing the security baseline that enterprise teams need for due diligence and compliance. No other comparable RPC provider at this price point carries this certification.

Sub-second finality changes the RPC equation

Avalanche finalizes transactions in under a second using the Snowman consensus protocol. When the chain itself is this fast, your RPC provider becomes a more meaningful factor in your application's overall response time. Slow or congested endpoints negate the chain's speed advantage.

DeFi ecosystem requires production-grade RPC

Avalanche's DeFi ecosystem generates high RPC volume. BoltRPC handles production load without degradation during peak periods.

Predictable request-unit pricing from $49/mo

BoltRPC offers fixed monthly plans priced in request units, starting at $49. Visit boltrpc.io/pricing for full plan details.

Full EVM compatibility

Any Ethereum code works on Avalanche C-Chain with a single endpoint change.

Built for high-throughput workloads

Dedicated infrastructure for production Avalanche applications. Contact us for volume requirements above the Business plan.

Full JSON-RPC coverage.

Every standard Avalanche method you would expect. Archive-only methods are available on request for qualifying plans.

STANDARD5

eth_blockNumbereth_calleth_getBalanceeth_sendRawTransactioneth_getLogs

Avalanche, explained.

Common questions about connecting to Avalanche over BoltRPC.

Ask a question →Read the docs

: The Avalanche C-Chain RPC URL with BoltRPC is https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/avax. Replace YOUR_API_KEY with your API key from dashboard.boltrpc.io. The chain ID is 43114.
: Open MetaMask, go to Settings, then Networks, then Add Network and enter: Network Name: BoltRPC Avalanche, RPC URL: https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/avax, Chain ID: 43114, Currency Symbol: AVAX, Block Explorer: https://snowscan.xyz.
: Avalanche has three chains: the C-Chain (Contract Chain), X-Chain (Exchange Chain) and P-Chain (Platform Chain). The C-Chain is the EVM-compatible chain where smart contracts and DeFi protocols run. When developers refer to "Avalanche RPC", they mean the C-Chain. The X-Chain and P-Chain use different APIs and are not EVM-compatible.
: Avalanche uses the Snowman consensus protocol, which achieves transaction finality in under one second under normal conditions. This is faster than Ethereum (12 seconds) and most other EVM chains. Finality means the transaction is irreversible, not just included in a block, but confirmed by the network.
: Yes. BoltRPC provides WebSocket endpoints for Avalanche at wss://endpoints.boltrpc.io/ws/YOUR_API_KEY/avax. WebSocket is used for subscribing to real-time events: new blocks, transaction monitoring, contract event logs.
: An Avalanche Subnet is an independent blockchain within the Avalanche network with its own custom validator set and rules. Enterprise teams and gaming companies launch Subnets to get dedicated throughput without competing with the broader C-Chain. The C-Chain itself is a Subnet. Subnets use separate APIs from the C-Chain JSON-RPC, though many are also EVM-compatible.
: Avalanche combines EVM compatibility, sub-second finality and a legal and regulatory track record that institutional teams find favorable. The Avalanche Foundation's grants program funds protocol development and major DeFi protocols including Aave and Curve have deployed on Avalanche. For institutions, BoltRPC adds ISO 27001:2022 certified infrastructure to that stack.

Ship on Avalanche this week.

An API key in under 60 seconds, Avalanche plus 35+ other chains, and a team that answers when you write.

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