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Leo J Li: Amazon KDP author data
As of Nov 6, 2026, Leo J Li has 20 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #27), mostly in Databases & Big Data, Systems Analysis & Design, Database Management Systems.
| Median price | $11.99 |
|---|---|
| Price range (middle 50%) | $11.99 – $11.99 |
| Median reviews | 1 |
| Total reviews | 2 |
| New books (30 days) | 7 |
| Breakout books (30 days) | 5 |
What stands out
- Median price $11.99, 67% below the median of their main category, Databases & Big Data.
- 7 new books in the last 30 days, 5 of them broke into a Best Sellers list.
Leo J Li's best-ranked books
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Securing AI Agents: Prompt Injection, Tool Permissions, Identity, Sandboxing, Memory Poisoning, and Audit Trails (Signal Studio Production AI Engineering)
by Leo J Li
- Price$11.99
- Reviews-
-
EvoOntology in Practice: Building and Evaluating Self-Evolving Semantic Layers for Data Agents
by Leo J Li
- Price$11.99
- Reviews-
- Published2026-09
-
Ontology-Driven Forward Deployed Engineering: An Enterprise Architecture for Turning Domain Meaning into Governed Operational Systems (Signal Studio Production AI Engineering)
by Leo J Li
- Price$11.99
- Rating5.0
- Reviews1
-
Ontology-Driven Forward Deployed Engineering: An Enterprise Architecture for Turning Domain Meaning into Governed Operational Systems (Signal Studio Production AI Engineering)
by Leo J Li
- Price$29.99
- Rating5.0
- Reviews1
-
Generative Engine Optimization: From Search Rankings to Accurate Discovery, Understanding, and Citation by AI (Signal Studio Production AI Engineering)
by Leo J Li
- Price$11.99
- Reviews-
- Published2026-08
-
Kubernetes Sandboxes for AI Agents: Build and Operate an Observable Agent Platform with AX, Agent Substrate, and Agent Sandbox
by Leo J Li
- Price$11.99
- Reviews-
-
Engineering Judgment in the Age of AI: From Writing Code to Making Tradeoffs: A Practical Guide to Questions, Verification, and Failure Drills for ... ... (Signal Studio Production AI Engineering)
by Leo J Li
- Price$0
- Reviews-
- Published2026-08
-
Understanding the Magic Quadrant for Observability Platforms: A Practical Guide to Platform Architecture, AIOps, and Enterprise Adoption
by Leo J Li
- Price$0
- Reviews-
- Published2026-10
-
AI Cost Engineering: Token Economics, Model Routing, Caching, Capacity, and Cost per Outcome (Signal Studio Production AI Engineering)
by Leo J Li
- Price$0
- Reviews-
- Published2026-08
-
From the Field to the Product: How Forward Deployed Engineering Turns Real-World Problems into Scalable Products (Signal Studio Production AI Engineering)
by Leo J Li
- Price$0
- Reviews-
- Published2026-08
Main categories
FAQ
How many books does Leo J Li have on Amazon?
KDPTop tracks 20 of their books; 7 made an Amazon list in the last 30 days.
Which categories does Leo J Li publish in?
Their books chart most often in Databases & Big Data, Systems Analysis & Design, Database Management Systems.
How does Leo J Li price their books?
The median price is $11.99; half of the books cost $11.99–$11.99.
Has Leo J Li released new books recently?
7 new books in the last 30 days, 5 of which reached a Best Sellers list.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.