onchain

name	onchain
description	CLI for crypto portfolio tracking, market data, and CEX history. Use when the user asks about crypto prices, wallet balances, portfolio values, Coinbase/Binance holdings, or Polymarket predictions.

Onchain CLI

CLI for crypto portfolio tracking, market data, and CEX history.

Invocation

onchain <command>

Commands

Market Data

onchain price <token>         # Token price (btc, eth, sol, etc.)
onchain markets               # Market overview with trending

Wallet Data

onchain balance [address]           # Token balances (auto-detects EVM/Solana)
onchain balance --chain polygon     # Filter by chain
onchain history [address]           # Transaction history
onchain portfolio [address]         # Full portfolio with DeFi positions

CEX Data

onchain coinbase balance      # Coinbase balances
onchain coinbase history      # Coinbase trade history
onchain binance balance       # Binance balances
onchain binance history       # Binance trade history

Prediction Markets

onchain polymarket trending          # Trending markets
onchain polymarket search <query>    # Search markets
onchain polymarket view <slug>       # View market details

Configuration

onchain setup                 # Interactive setup wizard
onchain config                # View current config
onchain config wallet add <name> <address>
onchain config wallet set-default <name>

Global Options

• --json - Output as JSON (agent-friendly)
• --plain - Disable colors and emoji
• --timeout <ms> - Request timeout

Configuration

Config file: ~/.config/onchain/config.json5

Required API Keys

Feature	API Key	Get Key
EVM wallets	DEBANK_API_KEY	DeBank
Solana wallets	HELIUS_API_KEY	Helius
Coinbase CEX	COINBASE_API_KEY + COINBASE_API_SECRET	Coinbase
Binance CEX	BINANCE_API_KEY + BINANCE_API_SECRET	Binance

Optional API Keys

Feature	API Key	Notes
Market data	COINGECKO_API_KEY	Free tier works, Pro for higher limits
Market fallback	COINMARKETCAP_API_KEY	Alternative market data source

Examples

Get Bitcoin price

onchain price btc

Check wallet balance

onchain balance 0x1234...5678

View portfolio with DeFi positions

onchain portfolio main  # Uses saved wallet named "main"

Get trending prediction markets

onchain polymarket trending -n 5

JSON output for scripts

onchain --json price eth | jq '.priceUsd'

Supported Chains

EVM (via DeBank)

Ethereum, BNB Chain, Polygon, Arbitrum, Optimism, Avalanche, Base, zkSync Era, Linea, Scroll, Blast, Mantle, Gnosis, Fantom, Celo, and more.

Solana (via Helius)

Full Solana mainnet support including SPL tokens and NFTs.

Agent Integration

This CLI is designed for agent use. Key patterns:

1. Always use --json for programmatic access
2. Check exit codes - 0 for success, 1 for error
3. Use saved wallets - Configure once with onchain setup, reference by name
4. Rate limiting - APIs have rate limits, add delays between rapid calls

Example Agent Usage

# Get portfolio value
VALUE=$(onchain --json portfolio main | jq -r '.totalValueUsd')

# Get price with change
onchain --json price btc | jq '{price: .priceUsd, change24h: .priceChange24h}'

# Check if market is bullish
CHANGE=$(onchain --json markets | jq '.marketCapChange24h')