dirac-run/dirac

Dirac is an open-source coding agent that emphasizes dense context curation and tool efficiency optimization to reduce reasoning drift over long contexts.

It's released under Apache 2.0 and is a fork of Cline. On gemini-3-flash-preview, it recorded 65.2% on Terminal-Bench-2, and handled 8 out of 8 complex refactors from public GitHub repositories successfully. The average cost is $0.18, which it states is a 64.8% reduction compared to competing tools.

The core design includes the following:

• Hash-Anchored Edits: fixes edit locations using hash anchors instead of line numbers
• Multi-File Batching: bundles reads and edits across multiple files into a single round trip
• AST-native precision: edits that reflect language structure for TypeScript, Python, C++, and more

Tool support includes file reading/writing, terminal commands, and even a headless browser. The workflow is approval-based, and it provides dirac auth, dirac -p, dirac -y, and dirac history. It reads AGENTS.md and the .ai, .claude, and .agents directories to reflect project-specific instructions and skills, and per the README, MCP is not supported.

Multiple models/API keys can be supplied via environment variables, and it also connects to AWS Bedrock. A VS Code extension is also provided.