API Pick

Product Introduction

1. Definition: API Pick is a specialized REST API toolkit designed for AI agents and developers, offering six production-ready endpoints for data validation, social network lookups, and company intelligence. It falls under the technical category of API-as-a-Service (APIaaS) for AI-driven workflows.
2. Core Value Proposition: It solves fragmented data sourcing for AI agents by providing unified, schema-predictable APIs with real-time JSON responses. Key value drivers include cost transparency (pay-per-successful-call), zero data storage for privacy compliance, and LLM-native integration via Claude/Gemini/OpenAI tool definitions.

Main Features

1. Telegram Registration Check:
   • How it works: Submit a global phone number via POST request; the API queries Telegram’s public infrastructure without authentication. Returns registered status, username, and user ID. Uses encrypted WebSocket tunneling to avoid rate limits.
   • Tech stack: Node.js backend with Telegram MTProto protocol simulation.
2. China Phone Lookup:
   • How it works: Validates Chinese mobile numbers via regex and carrier databases. Outputs carrier (China Mobile/Telecom/Unicom), province, city, and area code. Processes 100K+ requests/minute using Redis caching.
   • Tech stack: Custom carrier lookup algorithms + China MII public numbering plans.
3. Company Facts API:
   • How it works: Accepts stock tickers or SEC CIK identifiers. Pulls real-time market cap, SEC filings, and NAICS codes from EDGAR/SEC databases. Auto-converts XML filings to JSON.
   • Tech stack: Python BeautifulSoup scrapers + SEC API wrappers.
4. Credit-Based Pricing Engine:
   • How it works: Deducts credits only on HTTP 200 responses. Unused credits never expire. $5 = 5,000 calls. Rate limits: 50 reqs/second per key.
   • Tech stack: Stripe-integrated billing + Redis credit counters.

Problems Solved

1. Pain Point: Eliminates unreliable web scraping for AI agents needing real-time data (e.g., validating user contacts or enriching CRM leads). Addresses API fragmentation and unpredictable pricing in alternatives like AbstractAPI.
2. Target Audience:
   • AI Agent Developers: Building LangChain/CrewAI workflows requiring structured inputs.
   • FinTech Engineers: Needing SEC data for algorithmic trading bots.
   • Growth Hackers: Validating lead lists via email/phone APIs.
3. Use Cases:
   • Synchronous Telegram checks during user onboarding to prevent fake accounts.
   • Holiday API integrations in logistics SaaS for delivery ETA adjustments.
   • IP geolocation for fraud detection in banking agents.

Unique Advantages

1. Differentiation: Unlike RapidAPI’s marketplace model, API Pick offers flat JSON schemas (no nested objects) and per-account rate limits. Competitors like NumVerify charge per lookup regardless of success; API Pick bills only on HTTP 200.
2. Key Innovation: Localized public holiday computations (no third-party dependencies) using astronomical algorithms. Reduces latency to <50ms vs. 300ms+ in alternatives.

Frequently Asked Questions (FAQ)

1. How does API Pick ensure data privacy for Telegram checks?
   Zero data storage: Queries delete after processing. Only public Telegram data (no private messages or contacts) is accessed.
2. Can I use API Pick for high-volume email validation?
   Yes: Syntax/MX/disposable checks process 10K+ emails/minute. Free tier includes 100 credits for testing.
3. What happens if an API call fails?
   Credits aren’t deducted for non-200 responses (e.g., 429 rate limit errors). Retry logic is built into SDKs.
4. How to integrate API Pick with OpenAI function calling?
   Pre-built Claude/OpenAI skill definitions on GitHub auto-generate tool schemas for function calling.
5. Does the China phone API support virtual operators?
   Yes: Identifies MVNOs like China Telecom’s "Xiaoyu" using MII’s real-time numbering database.