Server data from the Official MCP Registry
Remote MCP and x402 service for paid public URL analysis and auditable condition verification.
About
Remote MCP and x402 service for paid public URL analysis and auditable condition verification.
Remote endpoints: streamable-http: https://mcp-x402-production.up.railway.app/mcp
Security Report
Valid MCP server (5 strong, 2 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.
3 tools verified · Open access · No issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"io-github-diogoup26-mcp-x402": {
"url": "https://mcp-x402-production.up.railway.app/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
MCP x402 - Paid AI Verification and URL Analysis
Pay-per-use AI analysis for agents and applications
Send a public HTTP or HTTPS URL and receive a concise report with a summary, key facts, risks or limitations, and recommended actions.
- No account or subscription: payment is made per request with x402.
- Transparent prices: $0.02 for
consultar_ia; $0.05 foranalisar_urlandverificar_condicoeson Base mainnet. - Agent-ready: available through MCP as
consultar_ia,analisar_url, andverificar_condicoes. - Live and validated: x402 v2, Coinbase validation passed, and Bazaar discovery metadata enabled.
- Live endpoint:
https://mcp-x402-production.up.railway.app/analyze - Service status:
https://mcp-x402-production.up.railway.app/health - Integration help: open an issue at
https://github.com/Diogoup26/mcp-x402/issues.
Ideal for AI agents, research automations, content screening, and applications that need webpage analysis without managing their own OpenAI integration.
A production-ready Model Context Protocol (MCP) service and HTTP API that provides paid AI assistance and public URL analysis using the OpenAI Responses API and x402 payments.
Live Service
- Base URL:
https://mcp-x402-production.up.railway.app - Health check:
GET /health - MCP endpoint:
POST /mcp - Paid URL analysis:
POST /analyze - Price:
$0.05 USDCper paid request - Network: Base mainnet (
eip155:8453)
Production Status
- Production deployment active on Railway
- x402 version 2 payment flow
- Base mainnet payments (
eip155:8453) - Coinbase x402 validation passed
- Simulation accepted with HTTP 402
- Bazaar discovery metadata enabled
- Coinbase index active
MCP Tools
Decision verification
verificar_condicoes — $0.05 USDC
A paid decision-verification tool for agents.
Give it a public URL and one or more concrete conditions. It returns a decision based only on evidence extracted from that page:
confirmado— the page clearly proves the condition.rejeitado— the page clearly contradicts the condition.incerto— the page does not provide enough evidence.
Each result includes the final source URL, page title, verification timestamp, condition-by-condition explanation, and a short quoted proof where available.
Example conditions:
- “The page identifies the seller.”
- “The product is available in Portugal.”
- “The page shows a price in euros.”
- “The document states that the service supports x402.”
This is designed for agents that need an evidence-based decision before taking the next action.
| Tool | Description | Price |
|---|---|---|
consultar_ia | Sends a prompt to the OpenAI Responses API. | $0.02 USDC |
analisar_url | Fetches and analyzes a public HTTP or HTTPS page. | $0.05 USDC |
verificar_condicoes | Verifies concrete conditions on a public page and returns evidence-based decisions. | $0.05 USDC |
Technology
- Node.js and TypeScript
- Express
- Model Context Protocol
- OpenAI Responses API
- x402 payments
- viem
- Cheerio
- Railway
Security
- HTTPS provided by Railway
- Helmet security headers
- Rate limit of 100 requests per 15 minutes
- Structured request logs with unique request IDs
- Host validation and Railway health-check support
- Restricted OpenAI API key with access only to
/v1/responses - Environment files and secrets excluded from Git
Environment Variables
Server
| Variable | Required | Description |
|---|---|---|
OPENAI_API_KEY | Yes | OpenAI project API key. |
OPENAI_MODEL | No | OpenAI model. Defaults to gpt-5-mini. |
HOST | No | Listening host. Defaults to 0.0.0.0. |
PORT | No | Listening port. Defaults to 3000. |
RAILWAY_PUBLIC_DOMAIN | Railway | Automatically supplied by Railway. |
Local Buyer
| Variable | Required | Description |
|---|---|---|
EVM_PRIVATE_KEY | Yes | Private key of the Base mainnet buyer wallet. Never commit this value. |
Example local .env.test file:
EVM_PRIVATE_KEY=your_private_key_here
Local Development
Install dependencies:
npm install
Start the development server:
npm run dev
Build the project:
npm run build
Start the compiled server:
npm start
Health Check
The health endpoint is public and does not require payment:
curl https://mcp-x402-production.up.railway.app/health
Paid End-to-End Tests
Build the project before running a buyer:
npm run build
The commands below authorize real x402 payments on Base mainnet: 0.02 USDC for consultar_ia and 0.05 USDC for analisar_url. Only run a command when a real paid request is intended.
HTTP URL Analysis
npm run analyze -- "https://example.com" "Summarize this page."
MCP URL Analysis
npm run mcp:analyze -- "https://example.com" "Summarize this page."
MCP AI Consultation
npm run mcp:consult -- "Reply only with: MCP OK"
A successful MCP payment prints PAGAMENTO MCP: success, a settlement receipt, and the tool response.
Deployment
The main branch is connected to Railway. Every successful push triggers a new deployment. Railway uses:
npm run build
npm start
The deployment health-check path is /health.
License
ISC
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