Open-source agent infrastructure
HALLOW
01Prologue
“An agent should not borrow a memory it cannot own, use a tool it cannot explain, or make a decision you cannot inspect.”
Hallow turns that principle into an agent that works for you.
02Hallow / About
A place for agents to liveNot another
Not another
chat window.
Hallow gives you an AI agent that remembers your work, uses the tools you allow, and asks before making important changes.
Explorethe docs
Operator room / your workspace
Your agent becomes a place.Memory below.
Agency above.
Agency above.
03Where the agents meet
Your machine is
the place of power.
Hallow brings memory, tools, and decisions together in one place you control.
Your agent's memoryStays with youPrivate / continuous / under your control
Hold and move / 01Keep the private
Keep the private
things private.
Memory, traces, package metadata and operator artifacts begin on your machine—not inside somebody else’s account.
Hold and move / 02Connect only
Connect only
what you choose.
Give Hallow access one tool at a time. Sensitive actions wait for your approval, and you can disconnect anything whenever you want.
04What Hallow can do
Why Hallow
holds together.
Drag, scroll, or use the arrows to explore each ability.
The system
behind the agent.
Five abilities. One agent you can understand and control.
Hold & move →
01 / MemoryPick up where
Pick up where
you left off.
Hallow remembers useful context, so you do not have to explain the same project every time.
02 / ToolsUseful power.
Useful power.
Your boundaries.
Choose what Hallow may use. Important changes always wait for your approval.
03 / IntelligenceOne request.
One request.
The right mind.
Connect the AI services you prefer and let Hallow choose the best route for each task.
04 / ImprovementLearns from
Learns from
what went wrong.
Every run leaves a clear record, helping Hallow spot failures and suggest safer improvements.
05 / ControlSee what it did.
See what it did.
Decide what’s next.
Check progress, review decisions, approve changes, and continue a task from one calm workspace.
0005
05Runtime surfaces
Choose your
way inside.
Use Hallow from the terminal or a visual workspace. Your conversations and decisions stay connected.
Surface / Command lineFast enough for builders.
Fast enough for builders.
Clear enough for everyone.
Install Hallow, check that everything is ready, create an agent, and begin working from one simple command.
- One
hallowcommand - Clear health and safety checks
- Windows, macOS, and Linux
$ hallow readiness ✓ workspace ........... ready ✓ memory vault ......... ready ✓ model routes ......... configured ✓ security policy ...... active HALLOW 001 IS READY
Visual workspaceA calm room for
A calm room for
you and your agent.
See tasks, memory, tools, and progress in one clear visual workspace.
- Simple browser interface
- Status at a glance
- No hosted account required
For developersBuild on Hallow
Build on Hallow
without losing control.
Connect your own applications to Hallow's tasks, memory, models, and tools through a policy-aware API.
- Clear machine-readable status
- Automation hooks
- Permission-aware operations
tasksmemorymodelstoolsBUILD
WITH HALLOW
WITH HALLOW
06Construction
From first signal
to durable system.
A working agent with memory, tools, safety checks, and one-command installation.
Smoother setup, clearer conversations, and easier connections.
Harder boundaries around third-party tools and packages.
An open ecosystem that anyone can inspect and improve.
07Proof, not promises
Stored under your control.
Verified before Hallow says it is ready.
A real installable build—not a waitlist.
Inspect it. Fork it. Improve it.
08Developer
Built in public.
Owned by no cloud.
Hallow is an attempt to make autonomous agents installable, inspectable, and standard. Humans should decide what runs, what leaves the machine, and what becomes public.
View repository ↗A durable memory changes the kind of work an agent can do.
Let the machine
remember.
Memory / local / legible09Project gallery
The world
of Hallow.
Drag to slide
10Field notes
Read the
system.
All documentation ↗Your agent is one command awayBring your agents
Bring your agents
home.
Windows / macOS / LinuxOpen source / MIT
11All you need to know
Answers to
key questions.
No. Your agent's workspace begins on the machine you control. You decide which outside AI services or tools may connect.
No. Hallow can remember a project, use approved tools, continue past work, and show what it did—not only reply to a message.
Yes. Hallow supports popular cloud AI services as well as models running on your own machine.
Yes. Hallow keeps a clear activity record and asks for approval before sensitive changes.
001 is an alpha preview. It is ready to install and test, while stronger protection and a richer visual workspace are still being built.