MCP & Tool Integration

Articles on Model Context Protocol servers, plugins, tool orchestration and the MCP marketplace for Codex.

331 articles

The Invisible Payload: How Unicode TAG-Block Encoding Breaks MCP Approval Dialogs — and Where Codex CLI's Defence Stack Stands

Rashidi's arXiv:2607.05744 reveals that a single Unicode encoding trick can slip instructions past every MCP approval dialog whilst reaching the model unchanged. Eight concealment techniques, three server libraries, zero re-approvals triggered. This article maps the findings to Codex CLI's layered security architecture and identifies what it catches and what it cannot.

Automated SAP Testing with Codex CLI: An Agent-Driven Approach

How to use Codex CLI to generate, maintain, and execute automated tests across SAP's four testing layers — OData APIs, BAPIs/RFCs, Fiori UI, and SAP GUI — with practical code examples, MCP integration patterns, and guidance on navigating SAP's April 2026 API policy.

Beyond the Prompt: Codex CLI Mastery

Most developers treat Codex CLI as a chat box. The real value sits past the prompt, in AGENTS.md, skills, subagents, profiles, MCP servers and directory layout. This guide covers everything between installation and genuine mastery.