Compare Nansen with Zerion API
| Detail | ||
|---|---|---|
| Category | On-chain & Smart Money | On-chain & Smart Money |
| Used for | ||
| Wallet P&L | Supports | Supports |
| AI Crypto Research | Supports | Doesn't list |
| AI On-chain Analysis | Supports | Doesn't list |
| AI Portfolio Analysis | Doesn't list | Supports |
| DeFi Portfolio | Doesn't list | Supports |
| On-chain Alerts | Doesn't list | Supports |
| On-chain Analytics | Supports | Doesn't list |
| Portfolio Tracking | Doesn't list | Supports |
| Smart Money Tracking | Supports | Doesn't list |
| Wallet Intelligence | Supports | Doesn't list |
| Wallet Labeling | Supports | Doesn't list |
| Wallet Performance | Supports | Doesn't list |
| Wallet Tracking | Doesn't list | Supports |
| Chains | ||
| Multichain | Doesn't list | Supports |
| Solana | Doesn't list | Supports |
| Platforms | ||
| API | Doesn't list | Supports |
| CLI | Doesn't list | Supports |
| Features | ||
| AI | Supports | Doesn't list |
| API | Doesn't list | Supports |
| Multi-chain | Doesn't list | Supports |
| Real-time Data | Doesn't list | Supports |
| Webhooks | Doesn't list | Supports |
| Data | ||
| On-chain | Supports | Supports |
| Wallet | Supports | Supports |
| DeFi | Doesn't list | Supports |
| Price | Doesn't list | Supports |
| Pricing | ||
| Free | Doesn't list | Supports |
| Pricing and verification | ||
| Starting price | Unknown | Unknown |
| Free plan | Unknown | Yes |
| Free trial | Unknown | Unknown |
| Verification | Not verified | Not verified |
“Doesn’t list” means the catalog has no record of it for that tool, not that the tool cannot do it.
Verdict
From CoinSeek’s reviewed take on each tool. Neither is declared the winner.
Nansen
Nansen is an on-chain analytics tool that uses labeled wallet addresses to help people understand what is happening on blockchains. It focuses on following so-called Smart Money, meaning wallets tagged as notable, and on reviewing wallet activity such as profit and loss and overall performance. The catalog also lists AI-assisted research and token analysis, plus a way to place trades from the same place. The facts do not state supported chains, platforms, or pricing, so those need checking elsewhere. It suits readers who want to study wallet behavior before making their own decisions.
Best for: Tracking Smart Money wallets; Checking wallet profit and loss; AI-assisted token research; Learning from labeled addresses
Zerion API
Zerion API is a REST interface for reading onchain wallet data, covering token holdings, DeFi positions, NFTs, transaction history, profit and loss, prices, and swaps. It works across EVM chains and Solana and returns data in a consistent format, with transactions decoded into readable actions. Webhooks let an app receive wallet activity alerts without repeatedly polling, and a CLI and MCP server connect the data to AI tools and agents. A free API key can be created from the Dashboard. It mainly suits developers building portfolio trackers, wallet analytics, or AI-driven apps.
Best for: Developers building portfolio trackers; Wallet profit and loss analysis; Wallet activity alerts via webhooks; Connecting onchain data to AI agents