Fiber Validate A Single Email
fiber_validate_a_single_emailChecks if a given email is likely to bounce using a waterfall of strategies.
How it works ↓Pricing
Per call
$0.04
Model
flat
Pay only for what you use. No subscriptions.
Inputs
email *
stringInput Parameters
Cost per run
Execution cost$0.04
About Fiber Validate A Single Email
Checks if a given email is likely to bounce using a waterfall of strategies. Works for catch-all email addresses, which are increasingly common yet hard for other APIs to validate.
Frequently Asked Questions
Checks if a given email is likely to bounce using a waterfall of strategies. Works for catch-all email addresses, which are increasingly common yet hard for other APIs to validate.
Fiber Validate A Single Email costs $0.04 per call on xpay. No subscription, no minimums. Pay only for the calls you make. New accounts get $5 in free credits.
Connect the Fiber AI API MCP endpoint to your client — Claude Code: claude mcp add --transport http fiber "https://fiber.mcp.xpay.sh/mcp?key=YOUR_XPAY_KEY"; Cursor/Windsurf/Cline/VS Code: same URL in mcp.json. The agent will see fiber_validate_a_single_email as a callable tool with the input schema and run it directly. (Unified across all providers: https://mcp.xpay.sh/mcp?key=YOUR_XPAY_KEY, then xpay_run with toolPath fiber/fiber_validate_a_single_email.)
Yes — that's exactly what xpay is for. You don't need a Fiber AI API account or API key. Sign up at xpay.tools (Google or email), get $5 free credit, and run Fiber Validate A Single Email immediately. Billing flows through your xpay balance.
Fiber Validate A Single Email accepts 1 input parameter: email. See the input schema and runnable form on this page for details and to test live.