Surface

The

Signal

One API to Read &
Trade Everything

One API to Read &
Trade Everything

500M+ labeled addresses, real-time data across 25+ chains, spot swaps and perp execution - all in one API.

500M+ labeled addresses, real-time data across 25+ chains, spot swaps and perp execution - all in one API.

Get API Key ->

One API to Read &
Trade Everything

500M+ labeled addresses, real-time data across 25+ chains, spot swaps and perp execution - all in one API.

500M+ labeled addresses, real-time data across 25+ chains, spot swaps and perp execution - all in one API.

Get API Key ->

View API Docs

Trusted by teams that move markets

Trusted by teams that move markets

Trusted by teams that move markets

Create a New Key and See Everything

Go to the API tab in-app and create your first key, with a guided workflow to help you make your first call in less than 5 minutes.

View API Docs ->

View API Docs ->

One Integration.
Multiple Capabilities.

One Integration.
Multiple Capabilities.

One Integration.
Multiple Capabilities.

The same endpoints powering Nansen's platform - available for your build.

Track the Best Wallets, Real-Time

See what top-performing funds and traders are buying, selling, and holding before the market catches on.

Identify Any Address, Instantly

Balances, PnL, counterparties, related wallets, and Nansen labels - for any address, across 25+ chains.

Full Visibility Into Any Token

Screen tokens, track capital flows by holder type, and surface the smart money consensus before it's priced in.

Query the Signal and Execute

Spot swaps on Solana and Base. Perp positions on Hyperliquid. You sign, we prepare.

View All Endpoints

View All Endpoints

View All Endpoints

For Agents

Give Your Agent Onchain Intelligence

Give Your Agent Onchain Intelligence

Give Your Agent
Onchain Intelligence

Track Smart Money, profile any wallet, and screen tokens across 18+ chains. Structured JSON via CLI, MCP, or REST API.

Track Smart Money, profile any wallet, and screen tokens across 18+ chains. Structured JSON via CLI, MCP, or REST API.

Track Smart Money, profile any wallet, and screen tokens across 18+ chains. Structured JSON via CLI, MCP, or REST API.

npm install -g nansen-cli

npx skills add nansen-ai/nansen-cli

npm install -g nansen-cli

npx skills add nansen-ai/nansen-cli

Get API Key ->

Launch Web App

Get API Key ->

Get API Key ->

Three Ways to Connect

Three Ways to Connect

Three Ways to Connect

Pick what fits your stack. All methods return the same high-quality data.

Pick what fits your stack. All methods return the same high-quality data.

Pick what fits your stack. All methods return the same high-quality data.

API

Direct REST access via API key or x402 pay-per-call micropayments.

Full API Docs ->

API

Direct REST access via API key or x402 pay-per-call micropayments.

Full API Docs ->

API

Direct REST access via API key or x402 pay-per-call micropayments.

Full API Docs ->

MCP

Connect Claude or Cursor to live Nansen data via Model Context Protocol.

Connect Claude or Cursor to live Nansen data via Model Context Protocol.

MCP Setup Guide →
MCP Setup Guide →

CLI

Terminal interface for Nansen data. Structured JSON output built for agents.

Full CLI Docs ->

CLI

Terminal interface for Nansen data. Structured JSON output built for agents.

Full CLI Docs ->

CLI

Terminal interface for Nansen data. Structured JSON output built for agents.

Full CLI Docs ->

Start With a Use Case

Start With a Use Case

Start With a Use Case

Smart Money Alerts

Detect when labeled wallets start accumulating a token. Fire alerts to Telegram, Discord, or your own system.

Detect when labeled wallets start accumulating a token. Fire alerts to Telegram, Discord, or your own system.

Token Discovery

Token
Discovery

Scan tokens across 25+ chains filtered by smart money activity and volume. Surface moves before they're priced in.

Scan tokens across 25+ chains filtered by smart money activity and volume. Surface moves before they're priced in.

Buyer & Seller Tracking

See exactly who is buying and selling any token - labeled entities, not anonymous addresses.

See exactly who is buying and selling any token - labeled entities, not anonymous addresses.

Hyperliquid Copytrade

Find the most profitable perp traders by PnL, track their open positions, and mirror their moves.

Find the most profitable perp traders by PnL, track their open positions, and mirror their moves.

Strategy Backtesting

Run any strategy against historical smart money data across chains. Validate signals before going live with capital.

Run any strategy against historical smart money data across chains. Validate signals before going live with capital.

Onchain Trading Agent

Query smart money signals, validate with token intelligence, and execute spot or perp trades.

Query smart money signals, validate with token intelligence, and execute spot or perp trades.

View All Use Cases

View All Use Cases

View All Use Cases

Real Integrations, Built in Production

Real Integrations, Built in Production

Real Integrations, Built in Production

"Nansen’s API transforms complex on-chain data into actionable trading insights with remarkable simplicity. It’s already uncovering hidden layers of data — turning blockchain noise into alpha-generating signals in just a few API calls."

Pulsar Capital

DeFi Trader

"Nansen’s API and MCP are incredibly powerful and we believe agents are best suited to leverage this data - with Corbits, Nansen is now more accessible than ever to AI agents and products by removing the need for developers to manage API keys or complex setups."

Corbits

Alex Kehaya, CEO

Start Free.
Scale When You're Ready.

Start Free.
Scale When You're Ready.

Start Free.
Scale When You're Ready.

Test core endpoints at no cost. Upgrade when you're ready to build at scale. Pay with card or crypto.

Free Plan

$0

/month

Best for quick experimentation and testing

100 trial credits

Daily 10-credit refill

Rate limits: 15/sec, 300/min

Start for Free ->

Pro Plan

Popular

$49

/month

Best for automations and agentic builds

2000 starting credits

Bulk credit discounts

Rate limits: 75/sec, 1,500/min

Start with Pro ->

Or Start Without API Key. From $0.01 Per Query

x402 payments enables pay-per-call access to the Nansen API using USDC on Base or Solana.

Or Start Without API Key. From $0.01 Per Query

x402 payments enables pay-per-call access to the Nansen API using USDC on Base or Solana.

Rays

Make Your First API Call in Under 5 Minutes

Make Your First API Call in Under 5 Minutes

500M+ labeled addresses, Smart Money flows, and 25+ chains through clean REST endpoints, free to test before you commit.


One of Hyperliquid's top validators with over $1B HYPE staked - and every stake earns you Nansen Points.

Try the API ->