ShadowFeed — AI Data Marketplace

The Problem

Why ShadowFeed?

AI agents need data but can't access traditional providers.

Expensive Subscriptions

CoinGecko $129/mo, Nansen $2,500/mo — AI agents only need a few queries. Monthly subscriptions are wasteful.

Agents Can't Sign Up

AI agents have no identity, can't create accounts, and don't have credit cards. They need autonomous payment.

Pay-Per-Query via x402

Agent hits endpoint, auto-pays via STX micropayment, data delivered instantly. No signup, no subscription needed.

Marketplace

Available Data Feeds

Real-time crypto intelligence — pay only when you need it.

Protocol

How It Works

4 steps. Fully autonomous. No human needed.

1

Discover — Agent Finds Feeds

Agent accesses /registry/feeds to browse available data feeds and pricing. Free!

GET /registry/feeds // List all feeds + prices

2

Request — Server Returns 402

Agent requests data. Server responds with HTTP 402 Payment Required — containing payment details.

GET /feeds/whale-alerts
← 402 { amount: "0.005 STX", payTo: "ST3G55..." }

3

Pay — Agent Auto-Signs TX

x402 SDK signs an STX transaction from the agent's wallet and re-sends the request with payment proof. Fully autonomous!

GET /feeds/whale-alerts
Header: payment-signature: [signed-tx]

4

Receive — Data Delivered

Payment verified and settled on Stacks (Bitcoin L2). Data returned instantly. Everything provable on-chain.

← 200 OK + whale alert data + tx receipt

Interactive

Try It Live

Click an endpoint to see the API response in real-time.

Free Endpoints

Paid Endpoints (x402)

Analytics

Provider Stats

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Total Queries

-

Reputation Score

-

Provider Tier

-

Uptime

Feed Performance

Real-Time

Live Activity

Every row is a real micropayment from an AI agent.

0

Total Revenue (STX)

0

Unique Agents

Recent Transactions

Time

Feed

Agent

TX Hash

Price

Speed

Status

Loading activity...

Rankings

Agent Leaderboard

Top AI agents ranked by total data queries.

#

Agent

Total Queries

Spent (STX)

Feed Breakdown

Avg Speed

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Integration

For Developers

Integrate your AI agent with ShadowFeed in 4 lines of code.

# Install x402-stacks SDK
npm install x402-stacks express

# Generate mainnet wallet
npx tsx -e "const {generateKeypair}=require('x402-stacks'); console.log(generateKeypair('mainnet'))"

# Fund wallet with STX from any exchange
# Send STX to your generated SP... address

// Protect endpoint with x402 payment
import { paymentMiddleware, STXtoMicroSTX } from 'x402-stacks';

app.get('/my-data-feed',
  paymentMiddleware({
    amount: STXtoMicroSTX(0.005),
    payTo: 'SP_YOUR_ADDRESS',
    network: 'mainnet',
    asset: 'STX',
  }),
  (req, res) => {
    res.json({ data: 'Your premium data here' });
  }
);

// AI agent auto-pays when accessing data
import { wrapAxiosWithPayment, privateKeyToAccount } from 'x402-stacks';

const account = privateKeyToAccount(PRIVATE_KEY, 'mainnet');
const api = wrapAxiosWithPayment(axios.create(), account);

// Request data — payment is automatic!
const { data } = await api.get('https://api.shadowfeed.app/feeds/whale-alerts');
console.log(data);

Pricing

Cost Comparison

Pay-per-query vs monthly subscriptions.

Provider	Model	Price	10 Queries Cost
CoinGecko Pro	Subscription	$129/mo	$129.00
Nansen	Subscription	$150/mo	$150.00
Arkham Intel	Subscription	$300/mo	$300.00
ShadowFeed	Pay-Per-Query	~$0.003-0.01/query	~$0.06

* Prices based on STX ~ $1.00. Actual costs vary with STX price.

Data Marketplacefor AI Agents