ThatCode

Repo agent on your machine. Bring your own API.

ThatGPT family · Download (Windows) · Verify downloads · Security

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ThatCode is a local coding agent with a simple desktop UI. Point it at a project folder, bring your own OpenAI-compatible API, and ask it to read, edit, run tests, and explain your codebase.

Sibling to ThatGPT (ChatGPT, but local) — same tone, separate product.

Formerly Muse (v1–2). v2.7.1 is the current ThatCode release (Windows). See CHANGELOG.md and docs/temp/thatcode-todo.md for Phase 8–9 plans.

Platform v1: Windows (NSIS + MSI + portable zip). macOS and Linux are Phase 8.

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Features

• Local-first — SQLite history and settings on your device

• Workspace agent — sandboxed tools: read, edit, search, git, verify

• Change review — unified diffs with revert per file or revert all

• Verify loop — auto-run tests/build after edits (configurable)

• OpenAI-compatible API — any provider; your keys stay local

• Optional — MCP tools, RAG index, task queue (Settings)

• Command palette — Ctrl+K for settings, tiers, re-index, and more

Current release: v2.7.1 — verify with SHA256.txt and docs/TRUST.md (includes VirusTotal reports for Windows installers).

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Screenshots

   

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Installation (Windows)

1. Download NSIS (.exe), MSI, or portable zip from GitHub Releases — trusted source only.

2. Verify with SHA256.txt on the release page (see checksums for v2.7.1):

   Asset	SHA256
   ThatCode_2.7.1_x64-setup.exe	26754bc38d74085603d7ab2799c9c1336a19e1cae5936d6f926e045cf14be4ed
   ThatCode_2.7.1_x64_en-US.msi	62881009afcfe2e1b1ac661117999b5a684b2e0eb653db61dda6fbc0bfdc65dd
   ThatCode_2.7.1_x64-portable.zip	499f0c9b29199420424021cf2569258fdd965bb15624ac1413773335a2d791fb

3. Optional: review VirusTotal reports (unsigned builds may show 1–2 heuristic flags).

4. Open Settings → set API URL/key → pick a project folder → start asking.

Upgrading from Muse 2.x requires a clean install (com.thatcode.app is a new app id).

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Development

Windows recommended for v1 work (release target).

git clone https://github.com/Satan2049/that-code.git
cd that-code
npm ci
npm run tauri dev

See docs/development.md.

npm run build
npm run test:rust
npm run lint:rust

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Build (Windows)

npm run tauri build

Output: src-tauri/target/release/bundle/ (NSIS + MSI). Attach portable zip manually if needed for release.

.\scripts\generate-sha256.ps1
# Compare with SHA256.txt in repo root before tagging v2.7.1

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Documentation

Document	Purpose
ARCHITECTURE.md	System design and request flow
docs/development.md	Clone, build, test
docs/temp/thatcode-todo.md	Phase checklist
docs/TRUST.md	Verify downloads
CONTRIBUTING.md	Contributor guide

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Contributing

See CONTRIBUTING.md and CODE_OF_CONDUCT.md.

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License

MIT — Copyright (c) 2026 ThatCode Contributors