Developer APIs,
production-ready
A curated collection of specialized REST APIs — phone validation, social network lookups, and company intelligence. Designed for developers, LLM tool calling, and AI agent workflows.
API Tools
All endpoints require an API key and credits.
China Phone Checker
Validate Chinese mobile numbers and get carrier, province, city & area code. Supports China Mobile, Telecom & Unicom. Perfect for AI agent data enrichment pipelines.
Telegram Checker
Check if a phone number is registered on Telegram. Retrieve username, user ID & profile details for global numbers. Ideal for LLM-powered contact enrichment.
Company Facts
Get public company data via stock ticker or CIK. Includes market cap, SEC filings, industry classification & financial data. Built for AI-driven investment research workflows.
Email Validator
Validate email addresses with syntax check, MX record verification, and disposable email detection. Returns clear deliverability signals in one call.
Start Free
100 credits on signup. Pay-as-you-go with transparent per-request pricing.
Instant Results
Real-time responses optimized for speed — perfect for synchronous AI agent tool calls.
Privacy First
No data stored. All queries are processed securely and privately.
AI Agent Native
Simple JSON REST endpoints designed for LLM tool calling, OpenAI function calling, and autonomous agent pipelines.
Built for AI Agents & LLM Workflows
All endpoints are simple JSON REST APIs — easy to wire up as tools for OpenAI function calling, LangChain agents, Claude tool use, or any autonomous agent framework.
OpenAI / Claude / Gemini
Define any endpoint as a tool function. The agent autonomously decides when to call it and passes structured JSON arguments.
n8n / Zapier / Make
Drop in as an HTTP node in any automation workflow. Enrich leads, validate contacts, and research companies at scale.
LangChain / CrewAI / AutoGen
Wrap any endpoint as a LangChain tool or CrewAI action. Predictable JSON responses make parsing straightforward for agents.