Ecosystem V1 Distribution Gateway Windows x64 • v1.5.0 Ready
Hub Emblem

BackEnd Hub

The official desktop application and central distribution gateway for the BackEnd software ecosystem.

A local-first developer command center that unifies coding agents (Claude Code, Antigravity CLI), IDEs (Antigravity, Cursor, VS Code), test suites, Git repositories, and verified ecosystem application management under strict human-in-the-loop cryptographic approval.

✓ Zero cloud lock-in ✓ Offline SQLite durability ✓ TOCTOU race protection ✓ 95 Automated unit & lifecycle tests
Active Orchestration Session
APPROVAL REQUIRED
HUB:~$ hub workflow run --step 03
[WorkspaceLock] Acquired exclusive lock on C:/Projects/CoreAPI
▲ GATEWAY PAUSE: Step 3/5 requires explicit human approval.
Type: RUN_MISSION
Provider: claude-code (v2.1.220)
Command: claude -p "Refactor auth middleware and add test assertions"
SHA-256: 9f82a1c...8174b2 (Snapshot verified)
✓ TOCTOU Guard: Working tree clean. Snapshot immutable.
Waiting for user confirmation in desktop UI...
Registered Tools
7 Providers
Concurrency
Mutex Locked
Storage
Local SQLite

01
Live Application Tour

Inspecting the desktop application.

Every view below is an authentic high-resolution capture of the running Hub desktop client, operating against authentic SQLite database records and local repository state.


02
Security & Invariants

Agents are fast. But unconstrained agents are dangerous.

Today's developer tools force a false choice: either let autonomous agents execute arbitrary shell commands blind, or manually copy-paste terminal outputs across five disconnected windows. Hub provides a third way: automated orchestration bounded by cryptographic human-in-the-loop gates.

Security Invariant

Cryptographic Approval Snapshots

Before any consequential mission or test runs, Hub captures a SHA-256 snapshot of the exact executable path, CLI arguments, and working directory. If anything is modified between review and execution, the step aborts instantly.

Concurrency Defense

Workspace Exclusive Locking

No two workflows or background missions can execute simultaneously on the same repository directory. Hub halts overlapping commands with structured WORKSPACE_BUSY rejections.

Safe Process Spawning

Guaranteed shell: false Execution

All binaries are invoked directly through OS-level Process spawning with validated arguments and explicit PATH lookup. Hub never passes raw strings to cmd.exe or powershell.exe.


03
Orchestration Primitives

Seven primitives. Infinite workflows.

Workflows in Hub are not opaque black boxes. Every multi-agent sequence is composed of seven transparent, auditable step primitives.

Primitive Target Category Approval Policy Execution Behavior
RUN_MISSION Agents & CLI Tools Requires Approval Direct process execution (shell: false), capturing live circular stdout/stderr buffers with cancellation hooks.
RUN_TESTS Test Runners Requires Approval Auto-detects Vitest, Jest, PyTest, or Cargo suites; enforces timeout limits and captures exit codes.
OPEN_WORKSPACE IDEs (Antigravity, Cursor, VS Code) Requires Approval Launches native desktop IDE at the project root directory via detached, non-blocking platform commands.
OPEN_FILE IDEs & Editors Optional Opens a specific target file directly in the user's preferred IDE at the precise line of interest.
REVIEW_PAUSE Human Operator Mandatory Checkpoint Halts execution until the operator inspects changes, checks diffs, and explicitly signals continuation.
VERIFY Verification Harnesses Automated Runs non-destructive verification scripts, measuring duration and recording pass/fail scorecards in SQLite.
HANDOFF Multi-Agent Context Automated Packages git branch status, dirty file lists, and previous step outputs into structured context for the next agent.

04
Provider Matrix

Real tool discovery. Honest capability reporting.

Hub discovers installed development tools on your Windows system dynamically, querying exact binary versions and tracking fifteen distinct capability flags.

Claude Code CLI

First-Class Agent

Discovers claude.exe via user path. Executes headless non-interactive prompts with -p, streaming output buffers, structured exit codes, and instant cancellation.

Capabilities: START_AGENT, SUBMIT_PROMPT, STREAM_OUTPUT, HEADLESS

Antigravity IDE

Interactive IDE

Discovers Google Antigravity installations. Safely opens workspaces and individual files. Truthfully reports interactive-only status rather than fabricating prompt execution.

Capabilities: OPEN_WORKSPACE, OPEN_FILE, INTERACTIVE_ONLY

Cursor & VS Code

Interactive IDE

Discovers cursor.cmd and code.cmd on Windows PATH. Seamlessly coordinates editor window opening during handoff and review stages of workflows.

Capabilities: OPEN_WORKSPACE, OPEN_FILE, INTERACTIVE_ONLY

Ollama Local LLMs

Local Models

Discovers ollama.exe on the local machine. Coordinates offline language model prompts without cloud dependencies or external API usage.

Capabilities: START_AGENT, SUBMIT_PROMPT, HEADLESS

v1.5.0 Verified Release

Download BackEnd Hub

Standalone desktop application for Windows 10/11 x64. Includes complete SQLite database engine, local process manager, Git observer, multi-agent workflow runner, and ecosystem distribution engine.

Download Standalone Executable (.exe, 165 MB) Download Portable Zip (.zip, 165 MB) View Checksums & History
# Cryptographic Verification via PowerShell:
Get-FileHash BackEnd-Hub-1.5.0-win-x64.exe -Algorithm SHA256
# Expected Hash:
9393d4d58b118277968144014897169d498302102bc669f58de3534dd9c7b3c8
# Portable Zip Hash:
69843ee0c65e47042d3a6130914f8106becbb361df6f46c3b2ad7908802a3d4f
System Requirements: Windows 10/11 x64 • 4GB RAM • Offline storage in %LOCALAPPDATA%/BackEnd • shell:false execution