by Google Trends
Real-time Google Trends data including interest over time, regional breakdowns, related topics and queries. Supports up to 5 keywords per search, geographic filtering, date ranges (hourly to 5 years), and search property filters (web, images, news, YouTube, shopping).
Install the x402 MCP server to let your AI agent access this data with automatic USDC payments on Base.
Required: You need a SerenDB database to store query results.
Get your connection string from the SerenDB Console under your database settings.
Add to claude_desktop_config.json:
{
"mcpServers": {
"x402": {
"command": "npx",
"args": ["@serendb/x402-mcp-server"],
"env": {
"X402_GATEWAY_URL": "https://x402.serendb.com",
"WALLET_PRIVATE_KEY": "0x...",
"BASE_RPC_URL": "https://mainnet.base.org",
"SERENDB_CONNECTION_STRING": "postgresql://..."
}
}
}
}Replace 0x... with your wallet private key and postgresql://... with your SerenDB connection string.
claude mcp add x402 \ -e X402_GATEWAY_URL=https://x402.serendb.com \ -e WALLET_PRIVATE_KEY=0x... \ -e BASE_RPC_URL=https://mainnet.base.org \ -e "SERENDB_CONNECTION_STRING=postgresql://..." \ -- npx -y @serendb/x402-mcp-server
claude mcp add x402 ` -e X402_GATEWAY_URL=https://x402.serendb.com ` -e WALLET_PRIVATE_KEY=0x... ` -e BASE_RPC_URL=https://mainnet.base.org ` -e "SERENDB_CONNECTION_STRING=postgresql://..." ` '--' npx -y @serendb/x402-mcp-server
Replace 0x... with your wallet private key and postgresql://... with your SerenDB connection string.
gemini mcp add x402 \ -e X402_GATEWAY_URL=https://x402.serendb.com \ -e WALLET_PRIVATE_KEY=0x... \ -e BASE_RPC_URL=https://mainnet.base.org \ -e "SERENDB_CONNECTION_STRING=postgresql://..." \ -- npx -y @serendb/x402-mcp-server
Replace 0x... with your wallet private key and postgresql://... with your SerenDB connection string.
codex mcp add x402 \ --env X402_GATEWAY_URL=https://x402.serendb.com \ --env WALLET_PRIVATE_KEY=0x... \ --env BASE_RPC_URL=https://mainnet.base.org \ --env "SERENDB_CONNECTION_STRING=postgresql://..." \ -- npx -y @serendb/x402-mcp-server
Important: Cursor has a 60s timeout. Pre-install globally first: npm install -g @serendb/x402-mcp-server
First, install globally to avoid timeout issues:
npm install -g @serendb/x402-mcp-server
Then add to ~/.cursor/mcp.json:
{
"mcpServers": {
"x402": {
"command": "x402-mcp-server",
"args": [],
"env": {
"X402_GATEWAY_URL": "https://x402.serendb.com",
"WALLET_PRIVATE_KEY": "0x...",
"BASE_RPC_URL": "https://mainnet.base.org",
"SERENDB_CONNECTION_STRING": "postgresql://..."
}
}
}
}Also works with Windsurf, Zed, and other MCP-compatible clients. See the full setup guide for details.
Access data directly via HTTP using the x402 payment protocol.
HTTP 402 with payment requirements (amount, wallet, EIP-712 data)X-PAYMENT header containing the signaturecurl -X POST https://x402.serendb.com/api/proxy \
-H "Content-Type: application/json" \
-d '{
"publisherId": "72f211f1-09fe-4fa4-aff6-c534080e1d4a",
"agentWallet": "0xYourWalletAddress",
"request": {
"method": "GET",
"path": "/endpoint"
}
}'This returns 402 Payment Required with the payment details you need to sign.
After signing the EIP-712 authorization, add the base64-encoded signature:
curl -X POST https://x402.serendb.com/api/proxy \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <base64-encoded-signature>" \
-d '{ ... }'Copy these prompts to use with your AI assistant. Make sure you have the x402 MCP server configured.
Using the x402 MCP server, fetch Google Trends data comparing interest in "Bitcoin", "Ethereum", and "Solana" over the last 90 days. Analyze search interest patterns: - Which crypto has the most search momentum? - How do search trends correlate with price movements? - Any regional differences in interest? - Emerging vs fading retail attention Save this to my SerenDB under "crypto_search_trends" to track retail sentiment over time.
Using the x402 MCP server, get Google Trends data for my brand or product keywords. Monitor search visibility: - Current search interest level - Trend direction (growing, stable, declining) - Related queries people are searching - Geographic hotspots of interest Save this to my SerenDB under "brand_search_monitor" to track marketing effectiveness.
Using the x402 MCP server, research Google Trends for emerging topics in AI and technology. Discover trending topics: - What AI-related terms are surging in search? - Breakout queries gaining rapid interest - Geographic regions leading adoption - Related topics worth exploring Save this to my SerenDB under "ai_trends_research" to stay ahead of emerging narratives.
Pay per API call via x402 protocol
by Exa
Exa is the first search engine that's optimized to return exactly what you ask for. We're an applied AI lab developing a novel neural approach to search. And we sell this search usage-based to customers—no ads, just quality. Our ultimate goal is perfect web search: to give users full control over the world's shared data.
by Perplexity
Perplexity is an AI-powered search engine that provides accurate, up-to-date answers with citations. Access raw web search results or grounded LLM responses through Sonar models.
by Kalshi
Access Kalshi prediction markets for real-time odds on elections, economics, and world events. Supports both read-only market data and authenticated trading.