How do I install the Wa Number Checker Skills skill?

Run npx skillmds@latest add dvcrn/wa-number-checker-skills in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Wa Number Checker Skills safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: makes network calls, reads secrets. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Wa Number Checker Skills?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Wa Number Checker Skills free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Wa Number Checker Skills?

dvcrn (@dvcrn) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Wa Number Checker Skills by dvcrn — Agent Skill

Name: Wa Number Checker Skills
Rating: 4.2 (5 reviews)
Author: dvcrn

Wa Number Checker Skills

Query whether a phone number is registered on WhatsApp. Use when the user asks to check if a number has WhatsApp, verify if a number exists on WhatsApp, "查这个号有没有 WhatsApp", "这个号码有没有在用 WhatsApp", "WhatsApp number check", or "验证号码是否在 WhatsApp". Supports MCP (wa-check-api) first, then REST API per references/api.md.

dvcrn Updated Sep 8, 2026 32 repo stars

File contents

WhatsApp Number Check

Determine whether a given phone number is registered on WhatsApp. Use this skill when the user asks if a number has WhatsApp or is using WhatsApp.

How to call

If wa-check-api MCP is configured: Prefer using call_mcp_tool to call check_whatsapp_number with the phone parameter (E.164 format recommended, e.g. +34605797764 or +8613800138000).
If MCP is not configured or you need to call from code/scripts: Use the REST API; see references/api.md. Include the x-api-key header and request GET /api/wa/check?phone=.... Base URL is https://wa-check-api.whatsabot.com.

Parameters and format

phone: Required. E.164 or digits only (e.g. 34605797764). If the user only provides a local number, ask for the country code or have them supply it.

Results and errors

Success: Answer based on result.exist in the response—"This number is registered on WhatsApp" or "This number is not registered on WhatsApp."
API returns non-zero code: Briefly explain using the error code (missing API key, invalid number, insufficient credits, rate limit, etc.) and suggest the user check their API key or credits. Error code details are in references/api.md.

Frequently asked questions