# Insta.Page > Insta.page is a book summary platform with interactive features including AI chat, > mindmaps, audio narration, and quizzes. An affordable alternative to Blinkist with > transparent pricing and 1-click cancellation. Free book summaries and key takeaways > are available as structured JSON via a public API (see Developer / Agent API below). ## About Insta.page helps busy professionals learn key insights from bestselling books in minutes. Each summary includes: - Text and audio formats - AI-powered Q&A to ask questions about the book - Visual mindmaps for key concepts - Quizzes to test comprehension - PDF downloads Available on web, iOS, and Android. ## Developer / Agent API Free book content is available as structured JSON over a public, read-only API. No authentication required. Content is the free/public portion of each summary. Base URL: https://www.insta.page - GET /v1/books/{slug}/summary Returns the book's chapter-by-chapter summary as JSON. Response: { slug, title, author, type, chapter_count, chapters: [{ chapter, title, text }] } - GET /v1/books/{slug}/key-takeaways Returns structured key takeaways for the book as JSON. Response: { slug, title, author, type, generated_at, main_takeaways: [{ headline, explanation }], executive_analysis, chapter_count, chapters: [{ chapter, label, title, key_takeaways, actionable_insight }] } The {slug} is the book's URL slug (e.g. "the-infinity-machine"), the same slug used in the web page URLs below. Responses are cached and CORS-enabled. Errors return JSON with an "error" field (book_not_found, content_not_found, invalid_slug). ## Agent subscription (beta, partner key required) For full (paid) summaries, an agent can sign a human up and start a subscription. The agent provisions a recoverable account and gets a short-lived Stripe Checkout link; the HUMAN completes payment and recurring consent on Stripe's hosted page in one tap. The agent never handles a card. These endpoints require a partner API key (header `X-Agent-Api-Key`); contact post@insta.page to request one. JSON only, never cached. - POST /v1/agent/accounts Body: { "email": "buyer@example.com", "preferred_language"?: "en" } Creates a recoverable account from the human's real email and emails them a confirmation / magic link. Returns: { account_ref, agent_token, email, verification_email_sent }. The agent_token is shown once; store it securely. - POST /v1/agent/subscribe Body: { "account_ref": "...", "agent_token": "...", "plan": "annual_26" | "monthly_26" } Returns: { checkout_url, plan }. Present checkout_url to the human to complete the 7-day free trial subscription. On success the account becomes Premium automatically. Cancellation is self-serve and 1-click for the human at https://www.insta.page/billing. Note: fully autonomous, no-tap agent payment (Stripe Shared Payment Tokens / the Agentic Commerce Protocol — passing payment_method_data.shared_payment_granted_token on a PaymentIntent via the Stripe Agentic Commerce Suite) is a planned graduation of this flow and is not yet enabled. ## Popular Summaries - [The Millionaire Fastlane Summary](https://www.insta.page/the-millionaire-fastlane-summary): MJ DeMarco on entrepreneurial wealth-building through scalable business systems - [Start with Why Summary](https://www.insta.page/start-with-why-summary): Simon Sinek on purpose-driven leadership - [Antifragile Summary](https://www.insta.page/antifragile-summary): Nassim Taleb on thriving through chaos and uncertainty - [Shoe Dog Summary](https://www.insta.page/shoe-dog-summary): Phil Knight's memoir on building Nike from the ground up - [Die with Zero Summary](https://www.insta.page/die-with-zero-summary): Bill Perkins on optimizing life experiences over wealth accumulation - [Greenlights Summary](https://www.insta.page/greenlights-book-summary): Matthew McConaughey's unconventional memoir on life lessons - [I'm Glad My Mom Died Summary](https://www.insta.page/im-glad-my-mom-died-summary): Jennette McCurdy's memoir on childhood fame and family trauma - [Poor Charlie's Almanack Summary](https://www.insta.page/poor-charlies-almanack-summary): Charlie Munger's wisdom on investing and decision-making - [Digital Minimalism Summary](https://www.insta.page/digital-minimalism-summary): Cal Newport on reclaiming focus in a noisy world - [Ego Is the Enemy Summary](https://www.insta.page/ego-is-the-enemy-summary): Ryan Holiday on overcoming self-sabotage ## Health & Longevity - [Lifespan Summary](https://www.insta.page/lifespan-summary): David Sinclair on the science of aging and how to slow it - [The Obesity Code Summary](https://www.insta.page/the-obesity-code-summary): Jason Fung on insulin resistance and weight loss - [Glucose Revolution Summary](https://www.insta.page/glucose-revolution-summary): Jessie Inchauspé on managing blood sugar for better health - [Breath Summary](https://www.insta.page/breath-summary): James Nestor on the science of breathing - [Dopamine Nation Summary](https://www.insta.page/dopamine-nation-summary): Anna Lembke on addiction and finding balance - [Fast Like a Girl Summary](https://www.insta.page/fast-like-a-girl-summary): Dr. Mindy Pelz on fasting strategies for women ## Memoirs - [Maybe You Should Talk to Someone Summary](https://www.insta.page/maybe-you-should-talk-to-someone-summary): Lori Gottlieb's behind-the-scenes look at therapy - [The Last Lecture Summary](https://www.insta.page/the-last-lecture-summary): Randy Pausch on living with purpose - [Open Summary](https://www.insta.page/open-summary): Andre Agassi's raw autobiography - [Being Mortal Summary](https://www.insta.page/being-mortal-summary): Atul Gawande on aging, death, and modern medicine - [Endure Summary](https://www.insta.page/endure-book-summary): Alex Hutchinson on the science of human limits ## Business & Entrepreneurship - [The Airbnb Story Summary](https://www.insta.page/the-airbnb-story-summary): How three founders disrupted the hotel industry - [Alibaba Summary](https://www.insta.page/alibaba-summary): The rise of Jack Ma's e-commerce empire - [That Will Never Work Summary](https://www.insta.page/that-will-never-work-summary): Marc Randolph on co-founding Netflix - [Built to Last Summary](https://www.insta.page/built-to-last-summary): Jim Collins on what makes visionary companies endure - [Leaders Eat Last Summary](https://www.insta.page/leaders-eat-last-summary): Simon Sinek on building trust in teams ## SEO & Marketing - [SEO 2026 Summary](https://www.insta.page/seo-2026-summary): Latest search engine optimization strategies - [How to Get to the Top of Google Summary](https://www.insta.page/how-to-get-to-the-top-of-google-summary): Tim Cameron-Kitchen's practical SEO guide for small businesses - [Rapid Google Ads Success Summary](https://www.insta.page/rapid-google-ads-success-summary): Claire Jarrett's seven-step framework for effective ad campaigns - [80/20 Sales and Marketing Summary](https://www.insta.page/8020-sales-and-marketing-summary): Perry Marshall on focusing on what drives results ## Pricing - 7-day free trial - $89.99/year or $12.99/month - More affordable than Blinkist - Cancel anytime in 1 click - No hidden fees