UpKuaJing contact validity check, verify phone numbers, email addresses, and domains for B2B lead qualification. UpKuaJing helps sales teams, recruiters, and traders validate contact data, reduce bounced emails, and improve outreach efficiency — essential for CRM data cleaning, candidate screening, and supplier verification.

Official skill for upkuajing (跨境魔方). Check the validity of contact information including phone numbers, email addresses, and domains. Returns status, type, a...

Security Scan

The skill is internally consistent with its stated purpose: it requires a single UpKuaJing API key and Python, calls UpKuaJing endpoints to validate phones/emails/domains, and stores minimal per-skill files under ~/.upkuajing.

Purpose & Capability

Name/description, required env var (UPKUAJING_API_KEY), required binary (python), and the code all align: requests are sent to https://openapi.upkuajing.com and the scripts implement phone/email/domain validation. No unrelated cloud credentials or extraneous capabilities are requested.

Instruction Scope

Runtime instructions stay within scope: they call the published validation APIs and require explicit user-provided inputs. The SKILL.md instructs storing the API key in ~/.upkuajing/.env and to confirm fee-incurring operations. Note: make_request triggers a daily version-check network call (version_check) on first API request, which is unrelated to a single validation call but is documented in code.

Install Mechanism

No download/install spec is provided (instruction-only with included Python scripts). requirements.txt lists a single dependency (httpx). This is proportionate for a Python-based HTTP client. No remote arbitrary binary downloads or extract operations are present.

Credentials

Only UPKUAJING_API_KEY is required (declared as primaryEnv) which is appropriate. The skill reads/writes files under ~/.upkuajing (/.env and version_cache.json) — expected but worth noting because the API key may be persisted to disk by the scripts when using the key-request flow. The code contains an API-logging facility that, if enabled, would log request and response bodies (potentially sensitive contact lists) to ~/.upkuajing/logs; logging is off by default (ENABLE_API_LOGGING = False).

Persistence & Privilege

always:false (no forced inclusion). The skill writes its own files under the user's home (~/.upkuajing) for API key persistence and version cache; this is normal for a CLI-like tool but is persistent filesystem access and should be expected by users. It does not alter other skills or system-wide agent settings.

Assessment

This skill appears to do what it says: validate phones, emails, and domains via UpKuaJing and requires only the UPKUAJING_API_KEY and Python. Before installing, consider: (1) API billing — all checks incur fees and the scripts may create payment orders or prompt you to top up; confirm you understand costs before confirming any fee-incurring action. (2) Persistence — the tool will read/write ~/.upkuajing/.env and a version cache under ~/.upkuajing; if you use the built-in 'apply for key' flow it will save a key to that file. (3) Logging — the code can log request/response bodies to ~/.upkuajing/logs if ENABLE_API_LOGGING is turned on; these logs could contain sensitive contact lists, so keep logging disabled or protect that directory. (4) Network activity — the client makes calls to openapi.upkuajing.com for validation and also performs a daily version check (posts skill name) on first API call. If you need more assurance, inspect the code yourself or run the scripts in a restricted environment, and avoid enabling logging if you plan to validate private contact data.

UpKuaJing Contact Info Validity Check

Check the validity of contact information using the UpKuaJing Open Platform API. This skill provides three detection interfaces: phone validity, email validity, and domain validity.

Overview

This skill provides access to UpKuaJing's contact validity detection through:

• Phone Validity Check (phone_validity_check.py): Check phone number validity, type, and WhatsApp status
• Email Validity Check (email_validity_check.py): Check email address validity
• Domain Validity Check (domain_validity_check.py): Check domain validity and security

Running Scripts

Environment Setup

1. Check Python: python --version
2. Install dependencies: pip install -r requirements.txt

Script directory: scripts/*.py Run example: python scripts/*.py

Important: Always use direct script invocation like python scripts/phone_validity_check.py. Do NOT use shell compound commands like cd scripts && python phone_validity_check.py.

Three Detection APIs

Phone Validity Check (phone_validity_check.py)

Check phone number validity, type, and WhatsApp status.

Parameters: See Phone Validity API

Examples:

# Check single phone number
python scripts/phone_validity_check.py --phones "[phone]"

# Check multiple phone numbers
python scripts/phone_validity_check.py --phones "[phone] [phone] [phone]"

Email Validity Check (email_validity_check.py)

Check email address validity.

Parameters: See Email Validity API

Examples:

# Check single email
python scripts/email_validity_check.py --emails "[e-mail]"

# Check multiple emails
python scripts/email_validity_check.py --emails "[e-mail] [e-mail] invalid-email"

Domain Validity Check (domain_validity_check.py)

Check domain validity and security status.

Parameters: See Domain Validity API

Examples:

# Check single domain
python scripts/domain_validity_check.py --domains "google.com"

# Check multiple domains
python scripts/domain_validity_check.py --domains "google.com fake-domain-xyz123456.com github.com"

API Key and UpKuaJing Account

• API Key: Stored in ~/.upkuajing/.env file as UPKUAJING_API_KEY
• First check: If not set, prompt user to provide or apply at UpKuaJing Open Platform

API Key Not Set

First check if the ~/.upkuajing/.env file has UPKUAJING_API_KEY; If UPKUAJING_API_KEY is not set, prompt the user to choose:

1. User has one: User provides it (manually add to ~/.upkuajing/.env file)
2. User doesn't have one: Guide user to apply at UpKuaJing Open Platform Wait for user selection;

Account Top-up

When API response indicates insufficient balance, explain and guide user to top up:

1. Create top-up order (auth.py --new_rec_order)
2. Based on order response, send payment page URL to user, guide user to open URL and pay, user confirms after successful payment;

Get Account Information

Use this script to get account information for UPKUAJING_API_KEY: auth.py --account_info

Fees

All validity check API calls incur fees. Latest pricing: Users can visit Detailed Price Description Or use: python scripts/auth.py --price_info (returns complete pricing for all interfaces)

Fee Confirmation Principle

Any operation that incurs fees must first inform and wait for explicit user confirmation. Do not execute in the same message as the notification.

Workflow

Decision Guide

User Intent	Use API
"Check if phone number is valid"	Phone Validity Check
"Verify email address exists"	Email Validity Check
"Check if domain is safe"	Domain Validity Check

Error Handling

• API key invalid/non-existent: Check UPKUAJING_API_KEY in ~/.upkuajing/.env file
• Insufficient balance: Guide user to top up
• Invalid parameters: Must first check the corresponding API documentation in references/ directory, get correct parameter names and formats from documentation, do not guess

API Documentation Reference

• Phone Validity: Check references/phone-api.md
• Email Validity: Check references/email-api.md
• Domain Validity: Check references/domain-api.md

Notes

• File paths use forward slashes on all platforms
• Do not guess parameter names, get accurate parameter names and formats from documentation
• Prohibit outputting technical parameter format: Do not display code-style parameters in responses, convert to natural language
• Do not estimate or guess fees — use python scripts/auth.py --price_info to get accurate pricing information

Related Skills

Other UpKuaJing skills you might find useful:

• upkuajing-global-company-people-search — Global company and people search
• upkuajing-customs-trade-company-search — Search customs trade companies
• upkuajing-map-merchants-search — Map-based merchant search
• upkuajing-email-tool — Send emails and manage email tasks
• upkuajing-sms-tool — Send SMS and manage SMS tasks