Dirac is an efficiency-focused open-source coding agent built for complex, real-world codebases.

Goal mode01A

Goal mode / 01

Goal mode

Give Dirac a /goal and walk away, it will continue working on it for hours or days without drift. The goal can run autonomously and pause only when it needs your input.

DIRAC / Goal mode01B

Dirac can extend itself02A

Dirac can extend itself / 02

Dirac can extend itself

Build new tools tailored to your workflow on the fly. Use /new-tool with tool description you want, Dirac will build the tool and make it available right away, within the same conversation.

DIRAC / Dirac can extend itself02B

Low-verbosity response setting03A

Low-verbosity response setting / 03

Low-verbosity response setting

Models speak less.

DIRAC / Low-verbosity response setting03B

Steer it as it works04A

Steer it as it works / 04

Steer it as it works

Something occurred to you after the task started? Send Dirac a message anytime, it will pass on the message to the model with the next tool response without disturbing the task.

DIRAC / Steer it as it works04B

Utility model05A

Utility model / 05

Utility model

Use a separate cheaper utility model to take expensive tasks such as context compactions or new task creations off of the main model's plate.

read our case study showing 80% savings ↗

DIRAC / Utility model05B

No more approval fatigue06A

No more approval fatigue / 06

No more approval fatigue

The utility model can be configured to act as a first pass for all permission requests that would otherwise come to you. It will follow the exact permission policy you give it, and approve the request when safe, escalate to you when unsafe. Auto-approvals will leave an entry in transcript along with approval reason.

DIRAC / No more approval fatigue06B

Anchored file editing07A

Anchored file editing / 07

Anchored file editing

Dirac uses a custom hash-anchoring protocol that makes code editing extremely efficient. Instead of using search-replace, it uses stable line anchors so model can say 'replace the text between anchor X and anchor Y with this new text'.

Read more about it: ↗

DIRAC / Anchored file editing07B

src/services/UserService.tsexternal save

Cider§async load(userId: string) {

Quartz§ const user = await this.store.get(userId)

Harbor§ return this.hydrate(user)

Harbor anchor invalidated after external saveFresh anchored read requested

AST code inspection08A

AST code inspection / 08

AST code inspection

Dirac leverages the underlying syntax trees to perform precise code inspection. For example, model can use inspect_ast('outline', 'utils/db.py') to get all classes and methods defined in a list of files, inspect_ast('implementation', 'utils/db.py', 'DBManager::init_db()') to extract a single method.

DIRAC / AST code inspection08B

AST code manipulation09A

AST code manipulation / 09

AST code manipulation

Dirac can replace a function like edit_ast('replace, 'utils/db.py', 'replacement', '{code}') or rename 100s of symbol like edit_ast('rename', 'src/', 'old_name', 'new_name') in one call.

DIRAC / AST code manipulation09B

Parallel code edits10A

Parallel code edits / 10

Parallel code edits

Dirac tooling protocol enables and encourages models to perform multiple file edits together.

DIRAC / Parallel code edits10B

Concurrent subagents11A

Concurrent subagents / 11

Concurrent subagents

Subagents are a first class citizens that can do (almost) everything the main task can do. Dirac's infra detects any file staleness at edit time. The subagents can have their own tools, prompts, timeouts and can inherit the context from parent.

DIRAC / Concurrent subagents11B

Ask Dirac questions about itself12A

Ask Dirac questions about itself / 12

Ask Dirac questions about itself

Every Dirac build ships with source, so you can simply use '/askDirac' to ask questions about the version of Dirac you are using.

DIRAC / Ask Dirac questions about itself12B

Opportunistic first request enrichment13A

Opportunistic first request enrichment / 13

Opportunistic first request enrichment

Dirac detects filenames, symbols, function names, directory paths etc from the first prompt you send, and before it reaches the agent, Dirac enriches the model's context to save on tool calls.

Multi-file change review13B

Multi-file change review / 13

Multi-file change review

Instead of reviewing multiple separate changes (when auto-approve is disabled), Dirac renders all changes in a single diff view.

Get started14A

Get started / 14

Ready to try?

Install Dirac, connect your preferred model provider, and give it a real task.

1. 01

   Install your interface. Use Dirac in VS Code or from the terminal.

2. 02

   Connect a model. Choose a provider, add its API key, and select a model.

3. 03

   Start with the outcome. Describe the change you want, or begin with /goal for autonomous work.

DIRAC / SETUP14B

Choose how you work

Install Dirac

The extension and CLI share the same agent core. Pick the interface that fits your workflow.

EditorInstall for VS Code↗ Terminalnpm install -g dirac-cli Copy

Both guides cover provider credentials, model selection, and your first task.