CTX Portable Project Context Engine Agent Harness — AI skill for Claude Code

CTX — Portable Project Context Engine & Agent Harness

**CTX** is a lightweight, agent-agnostic project context engine and deterministic coding harness. It equips AI coding agents (such as OpenCode, Claude Desktop, and custom MCP clients) with structured repository intelligence, abstract syntax tree (AST) symbol indexing, and bounded context without requiring external LLM calls or cloud dependencies.

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📌 Overview & Problem Statement

Modern AI coding agents struggle on non-trivial codebases due to two recurring bottlenecks:

1. Context Window Saturation & Inefficiency: Dumping raw files or relying purely on fuzzy vector embeddings wastes tokens, degrades reasoning quality, and introduces hallucinated API boundaries.
2. Lack of Deterministic Engineering Structure: LLMs lack an instant, exact mental model of project architecture, AST symbol definitions, and internal import graphs.

                    ┌──────────────────────────────────────────────┐
                    │               AI Coding Agent                │
                    │        (OpenCode, Claude, Cursor, etc.)      │
                    └──────────────────────┬───────────────────────┘