# x402tools.xyz > Pay-per-call utility APIs for AI agents. No API keys, no subscriptions. USDC micropayments on Base via x402 protocol. ## Documentation - [Full API Reference](https://x402tools.xyz/llms-full.txt): Complete documentation with schemas and examples - [Service Catalog (JSON)](https://api.x402tools.xyz/agents.json): Live machine-readable catalog of every service (official + community-deployed); auto-updates as developers ship new services - [llms.txt (live)](https://api.x402tools.xyz/llms.txt): Live discovery document generated from the registry - [MCP Server Discovery](https://mcp.x402tools.xyz/.well-known/mcp): MCP-formatted server descriptor - [x402 Protocol Docs](https://docs.x402.org): Learn about the payment protocol ## MCP Server (for AI agents) - URL: https://mcp.x402tools.xyz/mcp - Transport: streamable-http - Tools: 10 first-party services + auto-discovered community services (registered automatically as developers deploy them) - Payment: passthrough — agent signs locally with own wallet, key never leaves agent - npm: `npx -y @x402-tools/mcp` (stdio mode) - Registry: `io.github.acrylicfiddle/x402tools` on https://registry.modelcontextprotocol.io - Compatible: Claude Desktop, Cursor, Windsurf, Cline, Continue, OpenAI Responses API, Gemini ADK ## Live Services > The list below is the first-party set. For the complete, always-current catalog (including services deployed by independent developers), fetch https://api.x402tools.xyz/agents.json. - [QR Code Generator](https://qr.x402tools.xyz): POST /v1/generate — $0.01/call — Generate a QR code from text or URL (PNG/SVG/Base64); QR code creation & barcode generation - [Styled QR Code](https://qr.x402tools.xyz): POST /v1/generate/styled — $0.05/call — Branded, artistic QR codes with custom shapes, colors & gradients; designer/logo QR codes - [Screenshot Capture](https://snap.x402tools.xyz): POST /v1/capture — $0.05/call — Capture a screenshot of any website (full-page, dark mode, selectors); webpage rendering & thumbnails - [DNS Lookup](https://dns.x402tools.xyz): GET /v1/lookup — $0.02/call — Look up DNS records (A, AAAA, MX, NS, TXT, SOA); domain diagnostics & mail server lookup - [DocParse](https://docparse.x402tools.xyz): POST /parse — $0.01/call — Parse HTML/PDF URL into structured JSON; web scraping & PDF-to-JSON extraction - [Guardex](https://guard.x402tools.xyz): POST /screen — $0.03/call — Screen text for prompt injection & jailbreak attacks (LLM + regex); AI security & LLM input sanitization - [Mailcheck](https://mailcheck.x402tools.xyz): POST /v1/validate — $0.03/call — Validate & verify an email address (MX, SMTP, disposable, typo, risk score); email verification - [Rendex](https://rendex.x402tools.xyz): POST /v1/render — $0.05/call — Convert HTML or a URL into a PDF; HTML-to-PDF, invoice/report generation - [Visionex](https://visionex.x402tools.xyz): POST /v1/extract — $0.05/call — Extract text from an image using OCR; image-to-text, document/receipt scanning - [Prospex](https://prospex.x402tools.xyz): POST /enrich — $0.50/call — Turn a name + company domain into a sales-ready prospect profile (seniority, buyer persona, decision-maker probability, company intel, email pattern, personalised cold-email opener); lead enrichment & AI SDR outbound ## Payment - Protocol: x402 (HTTP 402 Payment Required) - Token: USDC - Network: Base (eip155:8453) - No API keys or accounts needed — payment is the authentication