AI Agent Input Validation
AI agent input validation for Moltbot. Schema validation, sanitization, allowlisting and multi-layer input defense for secure AI agent input processing.
What is Input Validation? Simply Explained
Input validation is like a bouncer for AI agent inputs: it checks every input before it's processed. Schema-based validation checks structure and types. Input sanitization cleans harmful content like HTML or SQL code. Allowlisting is safer than denylisting — only explicitly allowed values are accepted. Length & complexity limits prevent token flooding. Multi-layer defense means validation at multiple levels — API gateway, application and LLM layer. Without input validation, attackers can inject malicious prompts, manipulate tool parameters, or overwhelm the system.
↓ Jump to core concepts and implementation
Core Concepts
1. Schema-based Validation
Strict schema validation of all agent inputs. JSON Schema, Pydantic or Zod for type-safe input processing.
2. Input Sanitization
Sanitization of inputs before processing. HTML encoding, SQL escaping and shell escaping for tool calls.
3. Allowlisting statt Denylisting
Allowlist-based validation is safer than denylisting. Accept only explicitly allowed values and patterns.
4. Length & Complexity Limits
Limit maximum length and complexity for all inputs. Prevents token flooding and resource exhaustion.
5. Multi-Layer Defense
Multi-layer input validation. API gateway → application → LLM layer all with their own validation logic.
Advanced Techniques
Semantic Input Validation
Semantic validation of inputs beyond pure syntax. LLM-based intent analysis for malicious content detection.
Tool Call Validation
Strict validation of tool call parameters before execution. Type checking, range validation and business logic checks.
Rate Limiting per Input Type
Granular rate limiting depending on input type and risk profile. Stricter limits for sensitive operations.
Adversarial Input Testing
Regular testing of validation logic with adversarial inputs. Fuzzing and known injection patterns.