PromptSpeak

About

PromptSpeak is a robust Model Context Protocol (MCP) server designed to act as a crucial governance layer for AI agents. It intercepts every tool call an agent attempts, subjecting it to an 8-stage validation pipeline to prevent dangerous or unintended actions. This includes pre-execution checks for structural and semantic validity, drift detection, and circuit breakers, alongside a human-in-the-loop system for high-risk operations. PromptSpeak ensures agents operate within defined boundaries, providing an essential safeguard against prompt injections, hallucinations, or behavioral drift, all while maintaining ultra-low latency.

Key Features

• 0 GitHub stars
• 8-stage pre-execution validation pipeline for agent tool calls
• Human-in-the-loop approval for high-risk operations
• Behavioral drift detection and agent halting capabilities
• Comprehensive audit trail for all attempted and executed tool calls
• Configurable policies, confidence thresholds, and feature flags

Use Cases

• Adding a governance layer for AI agents that utilize tools (MCP servers, function calling, tool use)
• Requiring human approval for high-risk agent actions (e.g., financial transactions, production deployments)
• Detecting and preventing AI agent behavioral drift from assigned tasks
• Operating AI agents in regulated domains requiring deterministic action constraints