# Core Architecture ContextBridge is built on three foundational protocols: **1. Model Context Protocol (MCP)** * **Purpose**: Structured context delivery to AI systems * **Implementation**: 9 specialized MCP servers * **Features**: Real-time data, machine-readable schemas, composable tools **2. X402 Payment Protocol** * **Purpose**: Native, usage-based payments between agents and services * **Implementation**: EIP-3009 transferWithAuthorization integration * **Features**: Gasless payments, atomic transactions, multi-chain support **3. ERC-8004 Identity Standard (Coming Soon)** * **Purpose**: Verifiable agent identity and reputation * **Implementation**: On-chain agent registry and trust scoring * **Features**: Portable identity, reputation tracking, trust verification --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://contextbridge.gitbook.io/context-bridge/getting-started/core-architecture.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.