onchain

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

Onchain CLI

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

First-Time Setup (Required)

Before using most features, users must configure their API keys:

onchain setup

This interactive wizard helps configure:

• Coinbase/Binance - For CEX balances and trade history
• DeBank - For EVM wallet data (Ethereum, Polygon, Arbitrum, etc.)
• Helius - For Solana wallet data

Without setup: Only onchain price and onchain markets work (using free CoinGecko tier).

Verify setup: Run onchain test to check which providers are configured and working.

Agent note: If a command fails with "not configured" or "API key required", guide the user to run onchain setup first, then onchain test to verify.

Invocation

onchain <command>

Commands

Market Data

onchain price <token>         # Token price (btc, eth, sol, etc.)
onchain markets               # Market overview with trending
onchain search <query>        # Search tokens by name or symbol
onchain gas                   # Current gas prices (Ethereum default)
onchain gas --chain polygon   # Gas prices for other EVM chains

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

Transaction Lookup

onchain tx <hash>                   # Lookup transaction details (auto-detects chain)
onchain tx <hash> --chain base      # Specify chain explicitly
onchain tx <explorer-url>           # Paste block explorer URL directly

Supports EVM chains (Ethereum, Polygon, Base, Arbitrum, Optimism, BSC, Avalanche, Fantom) and Solana. Accepts raw hashes or explorer URLs (etherscan.io, basescan.org, solscan.io, etc.).

Example Output

Transaction Details

✓ Status: SUCCESS
  Hash:  0xd757...5f31
  Chain: Base
  Block: 41,310,593
  Time:  Jan 26, 2026, 01:55 PM (4h ago)

Addresses
  From: 0xc4e7263dd870a29f1cfe438d1a7db48547b16888
  To:   0xab98b760e5ad88521a97c0f87a3f6eef8c42641d

Value & Fee
  Value: 0 ETH
  Fee:   3.62e-7 ETH
  Gas:   96,893 / 249,604 (39%)

Method
  ID: 0x6a761202

🔗 https://basescan.org/tx/0xd757...

This output contains all available transaction data. The CLI queries Etherscan/Solscan APIs directly - there is no additional data available from other sources.

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 tags              # List all available tags/categories
onchain polymarket tags --popular    # Show popular tags by market count
onchain polymarket trending          # Trending markets (respects config filters)
onchain polymarket trending --all    # Show all markets (ignore config filters)
onchain polymarket trending --exclude sports,nfl   # Exclude specific tags
onchain polymarket trending --include crypto,ai    # Only show specific tags
onchain polymarket search <query>    # Search markets (respects config filters)
onchain polymarket view <slug>       # View market details
onchain polymarket sentiment <topic> # Analyze market sentiment for a topic

Sentiment analysis: Analyzes prediction markets to determine bullish/bearish expectations:

onchain polymarket sentiment fed        # Fed rate expectations
onchain polymarket sentiment bitcoin    # Bitcoin market sentiment
onchain polymarket sentiment ai         # AI-related predictions
onchain polymarket sentiment trump      # Political sentiment
onchain polymarket sentiment fed --json # JSON output for agents

Tag filtering: Configure default excludes in ~/.config/onchain/config.json5:

{
  "polymarket": {
    "excludeTags": ["sports", "nfl", "nba", "mlb"],
    "includeTags": []  // empty = all non-excluded
  }
}

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
EVM tx lookup	ETHERSCAN_API_KEY	For onchain tx on EVM chains
Solana tx lookup	SOLSCAN_API_KEY	For onchain tx on Solana

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             # Top 5 (respects config filters)
onchain polymarket trending --all            # All markets, ignore config
onchain polymarket trending --exclude sports # Filter out sports on-the-fly

Lookup a transaction

onchain tx 0xd757e7e4cdb424e22319cbf63bbcfcd4b26c93ebef31d1458ab7d5e986375f31
onchain tx https://basescan.org/tx/0x...  # Or paste explorer URL

Search for tokens

onchain search pepe               # Find tokens matching "pepe"
onchain search "shiba inu" -l 5   # Limit to 5 results

Check gas prices

onchain gas                   # Ethereum gas prices
onchain gas --chain polygon   # Polygon gas prices
onchain gas --json            # JSON output

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')

# Get transaction details as JSON
TX=$(onchain --json tx 0x... --chain base)
echo $TX | jq '{status: .status, from: .from, to: .to, method: .methodId}'

Transaction Lookup Guidance

IMPORTANT: Trust the CLI output. The onchain tx command queries Etherscan (EVM) or Solscan (Solana) APIs directly and returns all available data.

DO NOT:

• Use curl to hit Etherscan/Basescan APIs directly
• Use cast or other CLI tools as "fallbacks"
• Use WebFetch to scrape block explorer websites
• Assume the CLI is missing data - it returns everything available

DO:

• Use onchain tx <hash> or onchain tx <explorer-url>
• Use --json for structured data parsing
• Interpret the output directly to answer user questions

Example interpretation:

onchain tx 0x... --chain base

If output shows Status: SUCCESS, From: 0x..., To: 0x..., Method ID: 0x6a761202 - that's a successful contract interaction. The method ID 0x6a761202 is execTransaction (Gnosis Safe). No additional lookups needed.