# Athena: Building a Local-First AI Change Intelligence & Release Engine > Source: > Published: 2026-10-16 21:19:16+00:00 *This is a submission for the [Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle](https://dev.to/challenges/hacktoberfest-week2-2026-10-12)* **Athena** is an open-source, local-first **Git & AST change-intelligence engine and Model Context Protocol (MCP) server** built for the Hacktoberfest 2026 — Side Hustle Challenge. ðŸ›¡ï¸ Every developer and engineering team faces the same dread on release day: I built Athena to turn raw Git history and multi-language syntax trees into structured, mathematically verified change intelligence—without ever sending your code to closed third-party cloud APIs. 🔠**AST-Level Breaking Change Detection**: Parses Python and TypeScript syntax trees across Git commit ranges to pinpoint removed exports, altered parameter lists (positional, keyword, and defaults), and modified return types. 💥 **Caller Blast Radius Mapping**: Automatically traverses your repository to find every internal file, caller function, and imported symbol affected by a modified signature. 📚 **Documentation Drift Detection**: Cross-references modified code symbols against Markdown guides and docstrings to catch stale documentation before shipping. 📠**Evidence-Grounded Release Notes**: Generates categorized changelogs where every bullet point is linked directly to exact commit hashes and file diffs. 🔌 **Universal Model Context Protocol (MCP)**: Plugs natively into Claude Desktop, Cursor, Zed, or any AI coding assistant via standard JSON-RPC 2.0 stdio tools. 🔒 **Offline-First & Privacy-Focused**: Runs completely on your local machine using Ollama and open-weight models like `qwen2.5-coder:7b`. Your proprietary codebase never leaves your computer. Athena is built for engineering teams, freelancers, and companies building in regulated environments: **The Side Hustle Model**: An open-core CLI and MCP server for solo developers, paired with an automated GitHub Action bot ($19/month solo / $79/month team) that audits every Pull Request and posts blast-radius warnings directly in PR reviews. Athena can inspect any local Git repository (pass `.` for your current directory, or a path to a project). You can also run `python examples/create_demo_repo.py` to generate an instant sandbox repo with sample commits, breaking changes, and documentation drift. ``` python -m athena breaking-changes . --base v1.0.0 --target v2.0.0 Found 1 breaking change requiring human review: [CRITICAL] calculate_metrics (function) Location: src/core/calculator.py:42 Change: Non-optional parameter 'weights' was added to public function Evidence: commit 4a8b21c: "feat: add weights support to metrics calculation" Suggested SemVer Bump: MAJOR python -m athena analyze . --base v1.0.0 --target HEAD Analysis Summary: • Commits analyzed: 12 commits between v1.0.0 and HEAD • Files modified: 8 (Python: 5, TypeScript: 2, Markdown: 1) • AST Symbol changes: 3 modified signatures, 1 deprecated export • Downstream callers affected: 4 internal callers identified python -m athena release-notes . --base v1.0.0 --target v2.0.0 --version "v2.0.0" # Release Notes — v2.0.0 ## ⚠️ Potential Breaking Changes - `calculate_metrics`: Parameter `weights` added without a default value in `src/core/calculator.py` ([`4a8b21c`](commit:4a8b21c)) ## 🚀 What's Changed - Added async worker queue execution engine in `src/engine/worker.py` ([`7d9e10f`](commit:7d9e10f)) - Refactored export interfaces in TypeScript client ([`b12c40e`](commit:b12c40e)) ## 📚 Documentation Drift - `docs/api_guide.md` references the old 2-argument signature for `calculate_metrics` ``` Add Athena to your `claude_desktop_config.json` or Cursor settings: ``` { "mcpServers": { "athena": { "command": "python", "args": ["-m", "athena", "mcp"] } } } ``` Now your AI editor can directly query Athena for verified blast radiuses and breaking-change assessments before suggesting code edits! The entire engine is open-source under the MIT license: `athena-mcp`) **Local-First, Evidence-Backed Git & AST Release-Readiness and Change-Intelligence MCP Server** Athena is an open-source, local-first Model Context Protocol (MCP) server and developer CLI that delivers **verifiable, ground-truth code-change intelligence**. By combining deterministic Git diff analysis, Python Abstract Syntax Tree (`ast`) and TypeScript/JavaScript structural signature comparison, downstream caller blast-radius tracing, and documentation-drift detection, Athena eliminates the hallucination and superficiality of conventional AI release-note generators. `EvidenceRecord` items containing the 40-character commit SHA, commit subject, file path, exact base/target line spans, unified diff hunk…`/` markers, staticmethods, Windows NTFS stream protection, and TypeScript multiline interfaces) Athena is engineered around a strict **hybrid architecture**: ``` [ Git History & Diff Engine ] ↓ [ Multi-Language AST Parsers (Python + TypeScript) ] ↓ [ Deterministic Verification & Blast Radius Engine ] ↓ [ Ollama Local LLM (qwen2.5-coder:7b) ] (Optional Acceleration) ↓ [ Standard MCP Server / CLI Output ] ``` Athena uses **[Ollama](https://ollama.com/)** with the open-weight **`qwen2.5-coder:7b`** model running locally on consumer hardware (tested on an NVIDIA RTX 4050 Laptop GPU with 6GB VRAM). The model synthesizes multi-commit diffs, grouping disparate changes into cohesive business narratives and technical release themes. LLMs can invent code that does not exist. Athena solves this with a two-tier pipeline: `ast` module and TypeScript syntax tokenizers. The breaking-change verdict is For a developer tool like Athena, **open innovation is the entire business enabler**: 🔒 **Client Privacy & Zero NDA Breaches**: Freelancers and agencies handling enterprise code cannot send client intellectual property to OpenAI, Anthropic, or external cloud endpoints without written consent. Running open-weight models locally on the laptop guarantees 100% data sovereignty. Client code never leaves the machine. 💰 **Viable Unit Economics for a Side Hustle**: Sending 50,000-line diffs across 20 pull requests a day to proprietary cloud APIs would rack up hundreds of dollars in token bills each month, destroying margin. With open-weight models running on consumer hardware, the marginal cost per audit is **$0.00**. âœˆï¸ **Offline & Air-Gapped Autonomy**: Developers code on flights, commuter trains, and secure air-gapped corporate intranets. Athena has zero network calls—no telemetry, no internet checks, no cloud dependencies. 🔓 **No Vendor Lock-In**: Because Athena is built on open standards (Git, standard ASTs, and the open Model Context Protocol), users can swap the local model from Qwen to Llama 3 or Gemma 2 at will. To test Athena in a real-world setting, I shared it with a freelance backend developer who maintains a micro-service billing API for a retail client. **The Test:** We ran Athena against an upcoming `v2.0.0` refactor branch containing 38 commits. **What Happened:** Athena immediately flagged a **`CRITICAL` breaking change**: a helper method `format_tax_rate` had been changed into a `@staticmethod` and received a new positional argument without a default value. While the author's new unit tests passed, Athena's **Blast Radius** tool identified 3 legacy webhook processors in other files that were calling the old 1-argument signature. Merging that PR would have broken live customer invoice generation. **Their Feedback:** *"Catching that before the client saw it saved my reputation. In my freelance work, a broken webhook means angry emails and lost retainers. I'd easily pay $29 a month for a tool that automates this across my client repos."* **What They Asked for Next:** A native GitHub Action that automatically comments the blast radius report directly on pull requests. Athena was developed using an AI-assisted engineering methodology, pairing iterative code generation with rigorous verification. You can review and inspect the full architecture, AST visitors, and test suite directly in the open-source repository. `qwen2.5-coder:7b`) via Ollama with deterministic AST static analysis to deliver verifiable, private developer tooling.