apipick

About API Pick

API Pick is a curated collection of production-ready REST APIs designed for developers and AI agents working with social networks, telecom data, and business intelligence. Every endpoint is purpose-built for reliable use in both human-driven applications and autonomous AI agent pipelines.

Our Mission

We believe developers and AI agents should have access to powerful, reliable, and affordable data APIs that accelerate building better applications and intelligent workflows. Our mission is to provide high-quality API services that are easy to integrate — whether you're calling from application code, an LLM tool function, or an autonomous agent framework.

What We Offer

  • China Phone Number Validation — Verify Chinese mobile numbers with carrier and location details. Used by AI agents for contact enrichment and fraud detection pipelines.
  • Telegram Registration Checker — Check if phone numbers are registered on Telegram. Used for social network lookups in LLM-driven lead research and outreach automation.
  • Company Facts Lookup — Get comprehensive business information via stock tickers or CIK numbers. Powers AI-driven investment research, due diligence, and financial analysis workflows.
  • Email Validator — Validate email addresses with syntax check, MX record verification, and disposable email detection. Ideal for SaaS registration hygiene, marketing list cleaning, and AI-driven lead enrichment.
  • Public Holidays — Query public holidays for 100+ countries and any year. Fully local computation via python-holidays — no external dependencies. Perfect for HR scheduling, financial trading calendars, logistics ETAs, and n8n automation workflows.
  • IP Geolocation — Look up country, region, city, coordinates, and timezone for any public IPv4 or IPv6 address. Powered by MaxMind GeoLite2-City. Ideal for fraud detection, content localization, geo-based access control, and IP enrichment in AI agent pipelines.

Built for AI Agents

All API Pick endpoints are simple JSON REST APIs — straightforward to expose as tools for any LLM or agent framework:

LLM Tool Calling

Compatible with OpenAI function calling, Claude tool use, Gemini function declarations, and any model that supports structured tool calls.

Agent Frameworks

Easily wrapped as LangChain tools, CrewAI actions, AutoGen functions, or custom MCP server endpoints.

Workflow Automation

Drop into n8n, Zapier, or Make as HTTP nodes to enrich data at scale inside automated pipelines.

Predictable Responses

Consistent JSON schema, well-defined error codes, and deterministic output make parsing trivial for automated consumers.

Why Choose Us

Credit-Based Pricing

Transparent pay-per-use pricing with free credits to get started. No subscriptions or hidden fees. Credits are only consumed on successful responses — ideal for agent retry logic.

Privacy Focused

We don't store your query data. All requests are processed securely and discarded immediately, making us safe to use in privacy-sensitive AI workflows.

Developer & Agent Friendly

Simple REST endpoints with structured JSON responses. No SDKs required — any HTTP client, LLM framework, or automation tool can call our APIs out of the box.

Reliable Infrastructure

Deployed on Vercel edge infrastructure for low-latency responses globally. Real-time results with no caching delays — essential for synchronous agent tool calls.

Contact

Have questions, want to request a new API tool, or need help integrating with your AI agent? We'd love to hear from you — reach out with your feedback and ideas.