Structured API Prompts Using Server-Side Templates for LLM Security

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Solution Overview

Problem

Large language models (LLMs) are vulnerable to security breaches due to incorrect or malicious inputs, leading to unintended outputs, data leaks, and service disruptions, which can compromise user trust and system integrity.

Innovation Solution

Implementing pre-defined prompt templates and server-side rendering with attention computation optimizations to ensure consistent and secure input structures, minimizing the risk of harmful outputs and enhancing processing efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If pre-defined prompt templates and server-side rendering are implemented, then system security and output accuracy are improved, but device complexity and processing time increase

Engineering Contradiction:
Improvesystem securityVSAvoidprocessing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements pre-defined prompt templates that are prepared and validated in advance on the server side. These templates establish secure input structures before actual user interactions occur, preventing security breaches and manipulation attempts. The server-side rendering process pre-compiles and validates the template structures, ensuring that only authorized and safe prompt patterns are accepted during runtime.

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If pre-defined prompt templates and server-side rendering are implemented, then output accuracy is improved, but processing time increases

Engineering Contradiction:
Improveoutput accuracyVSAvoidprocessing time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The system performs template validation, attention computation optimizations, and structural verification in advance during server-side rendering. By pre-processing and validating prompt templates before they reach the user interaction phase, the system ensures high output accuracy while minimizing runtime processing delays. The pre-computed attention masks and validated structures are cached and reused during actual inference.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If attention computation optimizations are applied, then processing efficiency is improved, but the level of detail and computational precision may be reduced

Engineering Contradiction:
Improveprocessing efficiencyVSAvoidcomputational precision
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies attention computation optimizations selectively to specific regions or tokens within the prompt structure. Rather than uniformly reducing computation across all inputs, the system identifies and optimizes only those attention computations that are less critical to the final output accuracy. This localized optimization approach maintains high computational precision for essential transformations while improving overall processing efficiency for non-critical portions.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20260003689A1Structured prompts accessible through an application programming interface (API)
Publication Date: 2026.01.01 APPLE INC
  • US20260003689A1 patent drawing
  • US20260003689A1 patent drawing
  • US20260003689A1 patent drawing

AI summary

Systems and methods provide for structured prompts that are accessible through application programming interface (API.) An API request that includes one or more data elements and is indicative of a pre-defined prompt template for executing a task is received from an application process. In response, a pre-defined prompt template indicated by the API request is obtained. A prompt is generated for a machine learning model by applying the one or more data elements to the pre-defined prompt template. The prompt is provided to the machine learning model and the machine learning model processes the prompt to generate an output. The output is then transmitted back to the application process as an API response.