Overview

Tempo is a purpose-built Layer 1 blockchain designed for payments. It is EVM-compatible and built to support high-throughput, low-latency transaction flows, with sub-second finality and near-zero transaction fees.

Tempo is optimized for stablecoin payments and supports payment-specific functionality such as batch transfers, memo fields, compliance tooling including blocklists and allowlists, and the ability to pay transaction fees in supported stablecoins.

Block explorer: https://explore.tempo.xyz

Network Support

Network	Full History / Archive	HTTPS	WSS
Tempo Testnet (Moderato)	✅	✅	✅

WebSocket clients MUST respond to server ping frames, otherwise the connection will be closed and re-established every minute.

Methods & Compute Units

debug_traceBlockByHash	80
debug_traceBlockByNumber	80
debug_traceCall	80
debug_traceTransaction	80
eth_blockNumber	20
eth_call	40
eth_chainId	10
eth_estimateGas	40
eth_feeHistory	20
eth_gasPrice	40
eth_getBalance	40
eth_getBlockByHash	40
eth_getBlockByNumber	40
eth_getBlockReceipts	40
eth_getBlockTransactionCountByHash	40
eth_getBlockTransactionCountByNumber	40
eth_getCode	40
eth_getFilterChanges	40
eth_getFilterLogs	40
eth_getLogs	80
eth_getProof	40
eth_getStorageAt	40
eth_getTransactionByBlockHashAndIndex	40
eth_getTransactionByBlockNumberAndIndex	40
eth_getTransactionByHash	40
eth_getTransactionCount	40
eth_getTransactionReceipt	40
eth_getUncleCountByBlockHash	40
eth_getUncleCountByBlockNumber	40
eth_newBlockFilter	40
eth_newFilter	40
eth_newPendingTransactionsFilter	40
eth_sendRawTransaction	80
eth_subscribe	20
eth_syncing	10
eth_uninstallFilter	20
eth_unsubscribe	20
eth_syncing	10
net_listening	10
net_peercount	20
net_version	10
trace_block	80
trace_call	80
trace_filter	80
trace_replayBlockTransactions	270
trace_replayTransaction	270
trace_transaction	80
web3_clientVersion	40
web3_sha3	40

Endpoint Capabilities

Tempo endpoints support both HTTP and WebSocket connectivity for production-grade applications.

HTTP

Best suited for:

• backend services and APIs

• blockchain data queries

• smart contract deployment and interaction

• development and testing workflows

WebSocket

Best suited for:

• real-time transaction monitoring

• event subscriptions

• live dashboards and analytics

• applications that require low-latency data delivery

Getting Started

To start building on Tempo, connect your application to a Tempo endpoint and send standard Ethereum JSON-RPC requests.

Example request:

testnet

curl https://testnet.tempo.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":0}'