book summary website, non-fiction book summaries
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Sumizeit Developer API

The Book Knowledge API
Built for Builders

Embed 1,000+ professional book summaries, audio clips, quizzes, and metadata directly into your product. One integration. Instant knowledge.

1,000+ Book Summaries
99.9% Uptime SLA
10ms Avg. Response
REST JSON API
YearlyMonthly Save 17%
🚀

Starter

For indie devs and small apps just getting started.

$ 24 /mo

Save $58 — billed $290/year

Get Started →
  • 5,000 API requests / month
  • Full text summaries (1,000+ books)
  • Book metadata & cover images
  • Commercial use license
  • Standard rate limits
  • Email support
Most Popular
⚡

Growth

For growing products that need audio, quizzes, and speed.

$ 82 /mo

Save $198 — billed $990/year

Get Started →
  • 25,000 API requests / month
  • Everything in Starter
  • Audio summary endpoints
  • Quiz & key takeaways endpoints
  • Faster rate limits
  • Priority email support
🏢

Business

For teams that need scale, analytics, and reliability.

$ 249 /mo

Save $598 — billed $2,990/year

Get Started →
  • 100,000 API requests / month
  • Everything in Growth
  • Bulk data endpoints
  • Usage analytics dashboard
  • 99.9% uptime SLA
  • Priority phone & email support
🌐

Enterprise

For large organizations with custom needs and high volume.

Custom

Starting at $10,000/year

Contact Sales →
  • Unlimited or custom usage
  • Everything in Business
  • Dedicated account manager
  • Custom licensing agreement
  • On-premise / private deployment
  • White-glove onboarding

What You Get

Everything you need to build
a knowledge-powered product

Every endpoint returns clean, structured JSON. No scraping, no licensing headaches.

📖

Full Text Summaries

Access complete, professionally-written summaries for 1,000+ non-fiction books across business, psychology, science, and more.

🎧

Audio Summaries

Stream or download high-quality audio summaries. Narrated by professional voice artists. Perfect for listening apps and podcasts.

🎬

Video Summaries

Embed animated video summaries. Ideal for platforms that want to offer engaging, visual learning experiences.

🗂️

Rich Book Metadata

Title, author, category, cover image URL, publish year, ISBN, reading time, difficulty level, and more — all in one response.

🧠

Quizzes & Takeaways

Boost retention with ready-made quiz questions, key insights, and actionable takeaways for every book in our library.

🔍

Search & Browse

Full-text search across the entire library. Filter by category, author, or reading time. Paginate results with cursor-based paging.

Plan Comparison

Compare every plan

Not sure which plan fits? Here's a detailed breakdown.

FeatureStarterGrowthBusinessEnterprise
Monthly requests5,00025,000100,000Custom
Text summaries✓✓✓✓
Audio endpoints—✓✓✓
Video endpoints—✓✓✓
Quiz & takeaways—✓✓✓
Bulk endpoints——✓✓
Usage analytics——✓✓
Uptime SLA——99.9%Custom
Commercial use✓✓✓✓
Support levelEmailPriority emailPriority phone & emailDedicated manager
Custom licensing———✓
On-premise deployment———✓

Use Cases

Built for every kind of builder

Teams across industries use the Sumizeit API to deliver knowledge experiences.

📱

Learning & Education Apps

Add a curated book summary library to your e-learning platform. Students get concise, actionable knowledge from the best non-fiction books in minutes.

🤖

AI & Chatbot Products

Ground your LLM responses in verified, high-quality book content. Use the API as a knowledge retrieval layer for RAG-based AI assistants.

🎙️

Podcast & Audio Platforms

Stream audio book summaries directly into your podcast app or audio player. Expand your content library overnight with zero production cost.

🏋️

Wellness & Productivity Tools

Give users a daily dose of self-improvement wisdom. Integrate curated book recommendations, insights, and quizzes into habit-building apps.

🏦

Corporate Learning Platforms

Offer employees structured micro-learning from top business and leadership books. Deliver summaries inside your existing LMS or Slack bot.

📊

Content Aggregators

Build comprehensive book recommendation engines with our rich metadata. Surface the right book to the right reader at the right time.

Trusted By Teams

What our API customers say

From startups to Fortune 500s — builders trust Sumizeit to power their knowledge features.

★★★★★

We integrated the Sumizeit API into our corporate learning portal in under a week. Our employees now have access to 1,000+ book summaries right inside Slack. Engagement went up 3x in the first month.

K

Kara Mitchell

VP of L&D · Learnify

★★★★★

Our AI assistant needed a reliable source of curated non-fiction knowledge. Sumizeit's API gave us clean, structured summaries with audio we could feed directly into our retrieval pipeline. Game-changer.

D

David Osei

CTO · Mindpath AI

★★★★★

We built a full book-summary feature into our wellness app using the Sumizeit API. The audio quality is excellent, the uptime has been rock-solid, and their team responded to our custom licensing request within 24 hours.

S

Sofia Larsson

Head of Product · Zenova

FAQ

Common questions

After your payment is confirmed, our team will reach out within 1 business day with your API credentials, onboarding documentation, and a sandbox environment to test your integration.

All endpoints return structured JSON. Audio and video responses include secure streaming URLs. Pagination uses cursor-based tokens for consistency and performance.

Yes. All paid plans include a commercial use license. You may display summaries, audio, and video content within your product. Redistribution or resale of the raw API data is not permitted without an Enterprise license.

We'll notify you when you reach 80% of your limit. If you exceed it, requests will return a 429 status code until your cycle resets or you upgrade. Contact us for a mid-cycle upgrade at any time.

We don't offer a self-serve free trial at this time, but you can contact our team to request a short sandbox access period before committing to a plan.

Yes. Monthly plans can be cancelled at any time before the next billing cycle. Yearly plans are billed annually — you can cancel renewal at any time. Downgrades and upgrades take effect on your next billing date.

We currently have 1,000+ books across business, psychology, productivity, health, science, and more. We add new titles every week. The full catalog is accessible via the /books list endpoint.

Ready to build with book knowledge?

Pick a plan and our team will have you integrated within 24 hours. No long contracts. Cancel anytime.

View Plans & Pricing ↑ Talk to Sales