ECC Agent Harness Runs in Cursor Without Context Bloat Using Modular Setup

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Developer affaan-m released ECC v2.0, an agent harness that standardizes AI coding rules, skills, and MCP configurations across tools like Cursor, Claude Code, and Codex. A key challenge when using ECC inside Cursor is context bloat, where loading all instinct files and tool schemas at once rapidly consumes tokens and slows multi-turn sessions. The recommended fix is modular rule scoping — symlinking only language-specific rules relevant to the active workspace rather than loading the full ECC repository into the root prompt. MCP servers are added selectively via a project-level config file to further limit unnecessary context. Testing showed that routing Cursor through a prompt-caching gateway endpoint reduced multi-turn context costs by roughly 80–90% while preserving reasoning quality and chat history.

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