x402api-discoveryblockchainmicropayments
Search more than 14,000 x402-enabled HTTP APIs by keyword and filter results by network or USDC price.
Quick Install
Automated & IDE SetupCopy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.
Not yet automatically verified
We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.
Manual Client & Custom JSON ConfigExpand JSON ▾
Client Config & Setup
Choose your client or environment
Target File:
💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.
Overview
Use cases
Discover token price APIs
Find DEX swap routing services
Filter APIs by network and maximum USDC price
Return payment metadata for selected endpoints
Key features
Keyword search across 14,000+ x402-enabled APIs
Network filtering
Maximum-price filtering in USDC
Configurable result limit up to 50
Structured endpoint, payment, network, and relevance data
Base mainnet x402 micropayments
Capabilities & Tool Schemas
Inspect callable tools, capabilities, and parameters exposed to AI agents by X402search MCP.
Extracted Tool Capabilities
Keyword search across 14,000+ x402-enabled APIs
Network filtering
Maximum-price filtering in USDC
Configurable result limit up to 50
Structured endpoint, payment, network, and relevance data
Base mainnet x402 micropayments
Documentation Overview
x402search MCP Server
Search 14,000+ x402-enabled HTTP APIs from any MCP-compatible agent.
Version: 1.0.3 · License: MIT · Cost: $0.01 USDC per search · Base mainnet · No account needed
npm: https://www.npmjs.com/package/x402search-mcp
PyPI: https://pypi.org/project/x402search-mcp
API: https://x402search.xyz
Requirements
- A wallet private key (EVM)
- USDC on Base mainnet (eip155:8453)
- Get USDC on Base: https://www.coinbase.com/how-to-buy/usdc
Install: Claude Desktop
Add to your claude_desktop_config.json:
Config file location:
- macOS:
~/Library/Application Support/Claude/claude_desktop_config.json - Windows:
%APPDATA%\Claude\claude_desktop_config.json
Install: Claude Code
Then set your key:
Install: Cursor
Add to .cursor/mcp.json:
Install: Windsurf
Add to ~/.codeium/windsurf/mcp_config.json:
Install: Python agents (LangChain, CrewAI, AutoGen, GAME SDK)
Full docs: https://pypi.org/project/x402search-mcp
Quick Test
Tool: search_x402_apis
| Parameter | Type | Required | Description |
|---|---|---|---|
| query | string | yes | e.g. "token price API", "DEX swap routing" |
| network | string | no | e.g. "eip155:8453" for Base mainnet |
| max_price_usdc | number | no | Filter to APIs at or below this price |
| limit | number | no | Max results (default 10, max 50) |
Virtuals ACP Integration
x402search is available as a native ACP agent on the Virtuals protocol marketplace.
- Agent ID: 22531
- Agent profile: https://app.virtuals.io/acp/agent-details/22531
- Job name:
x402search - Price: 0.01 USDC per search
- Accepts crypto, DeFi, and blockchain API discovery queries
- Rejects off-topic requests automatically at the request phase
- Returns structured results: endpoint URLs, payment metadata, network, and relevance rank
Links
- npm: https://www.npmjs.com/package/x402search-mcp
- PyPI: https://pypi.org/project/x402search-mcp
- API: https://x402search.xyz
- Health: https://x402search.xyz/health
- GitHub: https://github.com/x402-index/x402search-mcp
- x402 protocol: https://x402.org
Related MCP Servers
Adoption & maintenance
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GitHub stars
2
Stargazers on the source repository.
Directory activity
2 views
Config copies, upvotes, and views on AllMCPs.
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Frequently Asked Questions about X402search MCP
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CategoryAggregators
PricingPaid
48Quality signal: Fair · 48/100How this signal is calculated ▾
Server availabilityNot measured
Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.
Verified ownership10/20
Documentation & tools24/30
Adoption & activity2/15
Community engagement0/10
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Scanned 21d ago via OSV.dev · x402search-mcp@1.0.3 (npm)
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