# Essential Brief
> Essential Brief is an AI-assisted executive intelligence platform delivering 3-minute structured daily digests on artificial intelligence, macroeconomics, crypto, technology infrastructure, energy markets, and global financial signals for founders, CTOs, investors, and decision-makers.

Essential Brief ingests hundreds of primary research feeds, engineering blogs, academic preprints (arXiv), on-chain metrics, and market feeds, filtering out clickbait to provide high-density, noise-free briefs every morning.

## Core Newsletter Briefs

- [AI Brief](https://www.essentialbrief.com/ai.html): Artificial intelligence research, frontier model releases (GPT-5, Claude, Gemini, Llama), open-source ML benchmarks, agentic RAG architectures, and vLLM infrastructure.
- [Board Brief](https://www.essentialbrief.com/board.html): Executive briefing on global geopolitics, macroeconomic trends, central bank policies, M&A deal flow, and board-level corporate strategy.
- [Crypto Brief](https://www.essentialbrief.com/crypto.html): Daily crypto intelligence covering Bitcoin macro dynamics, DeFi Total Value Locked (TVL), Layer-2 throughput, treasury reserves, and institutional adoption.
- [Tech Brief](https://www.essentialbrief.com/tech.html): Engineering blogs, software architecture, cybersecurity vulnerability alerts, cloud platform updates, and developer tech stack shifts.
- [Energy Brief](https://www.essentialbrief.com/energy.html): Global oil & gas production, renewable energy transitions, grid infrastructure, power logistics, and energy policy shifts impacting corporate cost structures.
- [Markets Brief](https://www.essentialbrief.com/markets.html): Global equity markets, bond yields, interest rate expectations, commodity trends, capital allocation, and risk management signals.

## Platform Features & Machine-Readable Feeds

- [Newsletter Archive Hub](https://www.essentialbrief.com/archive.html): Complete historical archive of all daily newsletter editions searchable by keyword, date, and category.
- [Full Machine Knowledge Base](https://www.essentialbrief.com/llms-full.txt): Extended plain-text specification containing detailed category schemas, primary sources, criteria, and API documentation for AI search agents and LLM crawlers.
- [Subscription API Endpoint](https://www.essentialbrief.com/api/subscribe.php): Programmatic JSON POST endpoint to subscribe work emails to one or more Brevo newsletter lists.
- [Archive Index API Endpoint](https://www.essentialbrief.com/api/archive_index.php): Programmatic JSON GET endpoint returning date-stamped archive metadata by domain.

## Company & Legal Information

- [About Essential Brief](https://www.essentialbrief.com/about.html): Mission statement, curation philosophy, editorial standards, and executive team background.
- [Contact Page](https://www.essentialbrief.com/contact.html): Directly contact the editorial team, submit research papers, or inquire about sponsorship opportunities.
- [Privacy & Data Policy](https://www.essentialbrief.com/policy.html): Privacy terms, email compliance (CAN-SPAM / GDPR), single-click unsubscribe guarantees, and data protection policies.