PromptReply

Generates text content (emails, social posts, product descriptions, creative writing) directly within WhatsApp chat using GPT-like language models, triggered via command prompts or natural language requests. The system intercepts user messages, routes them to a backend LLM API, and streams responses back into the chat thread without requiring app-switching. Integration leverages WhatsApp Business API or webhook-based message handling to maintain conversation context within the chat interface.

Analyzes group chat or multi-message threads within WhatsApp to extract summaries, action items, and key discussion points using extractive and abstractive summarization techniques. The system batches recent messages (typically last N messages or time window), sends them to a summarization-optimized LLM endpoint, and returns a condensed version formatted for WhatsApp's constraints. Handles noisy group conversations by filtering noise and prioritizing substantive content.

Generates images from natural language text descriptions directly within WhatsApp using diffusion-based image generation models (likely Stable Diffusion or DALL-E API). User provides a text prompt, the system routes it to an image generation backend, and returns a generated image file that WhatsApp renders natively in the chat thread. Handles image compression and format conversion to optimize for WhatsApp's media constraints (file size, resolution).

Implements a command parser that intercepts WhatsApp messages matching specific syntax patterns (e.g., '/generate', '/summarize', '/image') and routes them to appropriate backend handlers. The system maintains a registry of available commands, validates user input against command schemas, and executes the corresponding LLM or processing pipeline. Supports both explicit commands and natural language intent detection to infer user requests without strict syntax.

Maintains conversation context across multiple user-bot exchanges within a single WhatsApp chat thread, allowing the system to reference previous messages and build coherent multi-turn interactions. The system stores recent message history (typically last 5-10 exchanges) in a session cache or conversation state store, includes this context in LLM prompts, and updates the cache after each response. Handles context window limits by summarizing or truncating older messages when approaching token limits.

Integrates with WhatsApp's official Business API to receive incoming messages via webhooks, authenticate requests, and send responses back through WhatsApp's message queue. The system registers a webhook endpoint, validates incoming webhook signatures using HMAC-SHA256, parses message payloads, and queues responses for delivery. Handles rate limiting, message delivery confirmation, and error recovery to ensure reliable message flow.

Provides a templating system that allows users to define reusable prompt templates with variable placeholders (e.g., 'Generate a {tone} email about {topic}'), which are filled in with user-provided values at execution time. The system parses template syntax, validates variable presence, and injects values into the final prompt sent to the LLM. Supports conditional logic and filters for common transformations (uppercase, lowercase, truncation).

Processes multiple messages or conversations in a single operation, applying the same AI capability (content generation, summarization, image creation) to each item. The system queues batch requests, processes them asynchronously (typically in parallel or sequential batches), and returns results grouped by input. Handles rate limiting by spreading requests across time windows and managing API quota consumption.