Comparison
wavalid vs. Wa2in
How wavalid compares to Wa2in's WA Number Checker Chrome extension for validating numbers before you send.
Best fit for teams that need automation, not just a browser extension
Wa2in is a well-reviewed Chrome extension for filtering lists inside the browser. wavalid checks numbers through its own systems rather than your WhatsApp Web session, and adds a REST API and MCP server for automation.
Try wavalid freeBest overall
wavalid, for one credit price, bulk CSV, an API, and an MCP server.
Best for a free browser-based filter
Wa2in, if occasional in-browser filtering with a phone number generator is enough for your workflow.
Best developer fit
wavalid's REST API and MCP server plug straight into AI agents and pipelines.
Evaluation criteria
Bulk support, pricing clarity, WhatsApp focus, and account safety.
Where Wa2in falls short
Runs against your own WhatsApp Web session
As a Chrome extension, checks run through your logged-in WhatsApp Web account rather than a separate backend.
No REST API or MCP server
It's a browser extension only, so there's no way to call it from a backend job, CRM automation, or AI agent.
Requires sensitive browser permissions
Chrome Web Store listings for the extension note it requests broad permissions, which is worth reviewing before installing.
Want checks that don't rely on browser permissions or your own WhatsApp Web session?
Try wavalid freeFeature by feature
| Feature | wavalid | Wa2in |
|---|---|---|
| Real-time single check | ||
| Bulk CSV validation | ||
| REST API | Not offered | |
| MCP server | Not offered | |
| Chrome extension | ||
| Requires your own WhatsApp Web login | ||
| Country coverage | 195+ | Not stated |
| Pricing model | Credits | Free extension |
Which should you choose?
Choose based on whether you need backend automation, account safety, or a fully self-serve browser tool.
For quick one-off checks
wavalid's free single-number test or Chrome extension, without logging into your own WhatsApp Web session.
For agencies and marketers
wavalid's bulk CSV upload at one flat credit price, with results saved for later.
For developers
wavalid's REST API and MCP server return single or bulk WhatsApp checks with predictable response fields, ready for AI agents.
wavalid vs. Wa2in, answered
See how wavalid checks a list
Validate a sample list in minutes, no credit card required.