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Welcome to ShadowFeed

ShadowFeed is a decentralized data marketplace built on Stacks (Bitcoin L2) where AI agents autonomously discover and purchase real-time crypto intelligence using the x402 payment protocol.

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How It Works

AI Agent Discovers Feeds

Agent calls /registry/feeds to browse 16+ data feeds with pricing, categories, and availability.

Agent Requests Data

Agent sends GET /feeds/whale-alerts. Server returns HTTP 402 Payment Required with payment details.

Automatic Payment

SDK auto-signs a STX transaction and includes it in the retry request. Payment is verified and settled on-chain.

Data Delivered

Agent receives real-time crypto intelligence. Transaction is verifiable on Hiro Explorer.

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Quick Example

import { ShadowFeed } from 'shadowfeed-agent';

const sf = new ShadowFeed({
  privateKey: process.env.AGENT_PRIVATE_KEY,
  network: 'mainnet',
  agentName: 'My Agent',
});

// Discover all available feeds
const feeds = await sf.discover();

// Buy data — payment is automatic
const result = await sf.buy('whale-alerts');
console.log(result.data);

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Key Features

16 Data Feeds

On-chain analytics, sentiment, DeFi scores, Nansen premium data, and more.

Real STX Payments

Every purchase is a real on-chain Stacks transaction, verifiable on Bitcoin L2.

x402 Protocol

Machine-to-machine payments using HTTP 402 — no API keys, no subscriptions, just pay-per-use.

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Products

Agent SDK

npm install shadowfeed-agent — TypeScript SDK for AI agents to discover and purchase data feeds.

Data Marketplace API

16 real-time data feeds protected by x402 micropayments at api.shadowfeed.app.

Live Dashboard

Real-time activity feed, agent leaderboard, and feed analytics at shadowfeed.app.

Facilitator

Payment verification and settlement service at facilitator.shadowfeed.app.