github · limit-breaker-999 · Jan 8, 2026
diff --git a/.github/workflows/scripts/create-github-release.sh b/.github/workflows/scripts/create-github-release.sh
@@ -50,5 +50,7 @@ gh release create "$VERSION" \
   .genreleases/spec-kit-template-q-ps-"$VERSION".zip \
   .genreleases/spec-kit-template-bob-sh-"$VERSION".zip \
   .genreleases/spec-kit-template-bob-ps-"$VERSION".zip \
+  .genreleases/spec-kit-template-antigravity-sh-"$VERSION".zip \
+  .genreleases/spec-kit-template-antigravity-ps-"$VERSION".zip \
   --title "Spec Kit Templates - $VERSION_NO_V" \
   --notes-file release_notes.md
diff --git a/.github/workflows/scripts/create-release-packages.sh b/.github/workflows/scripts/create-release-packages.sh
@@ -217,13 +217,16 @@ build_variant() {
     bob)
       mkdir -p "$base_dir/.bob/commands"
       generate_commands bob md "\$ARGUMENTS" "$base_dir/.bob/commands" "$script" ;;
+    antigravity)
+      mkdir -p "$base_dir/.agent/workflows"
+      generate_commands antigravity md "\$ARGUMENTS" "$base_dir/.agent/workflows" "$script" ;;
   esac
   ( cd "$base_dir" && zip -r "../spec-kit-template-${agent}-${script}-${NEW_VERSION}.zip" . )
   echo "Created $GENRELEASES_DIR/spec-kit-template-${agent}-${script}-${NEW_VERSION}.zip"
 }
 
 # Determine agent list
-ALL_AGENTS=(claude gemini copilot cursor-agent qwen opencode windsurf codex kilocode auggie roo codebuddy amp shai q bob qoder)
+ALL_AGENTS=(claude gemini copilot cursor-agent qwen opencode windsurf codex kilocode auggie roo codebuddy amp shai q bob qoder antigravity)
 ALL_SCRIPTS=(sh ps)
 
 norm_list() {

diff --git a/AGENTS.md b/AGENTS.md
@@ -48,6 +48,7 @@ Specify supports multiple AI agents by generating agent-specific command files a
 | **Amp**                    | `.agents/commands/`    | Markdown | `amp`           | Amp CLI                     |
 | **SHAI**                   | `.shai/commands/`      | Markdown | `shai`          | SHAI CLI                    |
 | **IBM Bob**                | `.bob/commands/`       | Markdown | N/A (IDE-based) | IBM Bob IDE                 |
+| **Antigravity**            | `.agent/workflows/`    | Markdown | N/A (IDE-based) | Google DeepMind Antigravity |
 
 ### Step-by-Step Integration Guide
 
@@ -324,12 +325,13 @@ Work within integrated development environments:
 - **GitHub Copilot**: Built into VS Code/compatible editors
 - **Windsurf**: Built into Windsurf IDE
 - **IBM Bob**: Built into IBM Bob IDE
+- **Antigravity**: Built into Antigravity IDE (Google DeepMind)
 
 ## Command File Formats
 
 ### Markdown Format
 
-Used by: Claude, Cursor, opencode, Windsurf, Amazon Q Developer, Amp, SHAI, IBM Bob
+Used by: Claude, Cursor, opencode, Windsurf, Amazon Q Developer, Amp, SHAI, IBM Bob, Antigravity
 
 **Standard format:**
 

diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -7,6 +7,12 @@ All notable changes to the Specify CLI and templates are documented here.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.0.23] - 2026-01-08
+
+### Added
+
+- Support for Antigravity AI coding assistant (Google DeepMind).
+
 ## [0.0.22] - 2025-11-07
 
 - Support for VS Code/Copilot agents, and moving away from prompts to proper agents with hand-offs.

diff --git a/README.md b/README.md
@@ -162,6 +162,7 @@ Want to see Spec Kit in action? Watch our [video overview](https://www.youtube.c
 | [Roo Code](https://roocode.com/)                                                     | ✅      |                                                                                                                                           |
 | [SHAI (OVHcloud)](https://github.com/ovh/shai)                                       | ✅      |                                                                                                                                           |
 | [Windsurf](https://windsurf.com/)                                                    | ✅      |                                                                                                                                           |
+| [Antigravity](https://deepmind.google/)                                              | ✅      | IDE-based agent from Google DeepMind                                                                                                      |
 
 ## 🔧 Specify CLI Reference
 
@@ -179,7 +180,7 @@ The `specify` command supports the following options:
 | Argument/Option        | Type     | Description                                                                                                                                                                                  |
 | ---------------------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | `<project-name>`       | Argument | Name for your new project directory (optional if using `--here`, or use `.` for current directory)                                                                                           |
-| `--ai`                 | Option   | AI assistant to use: `claude`, `gemini`, `copilot`, `cursor-agent`, `qwen`, `opencode`, `codex`, `windsurf`, `kilocode`, `auggie`, `roo`, `codebuddy`, `amp`, `shai`, `q`, `bob`, or `qoder` |
+| `--ai`                 | Option   | AI assistant to use: `claude`, `gemini`, `copilot`, `cursor-agent`, `qwen`, `opencode`, `codex`, `windsurf`, `kilocode`, `auggie`, `roo`, `codebuddy`, `amp`, `shai`, `q`, `bob`, `qoder`, or `antigravity` |
 | `--script`             | Option   | Script variant to use: `sh` (bash/zsh) or `ps` (PowerShell)                                                                                                                                  |
 | `--ignore-agent-tools` | Flag     | Skip checks for AI agent tools like Claude Code                                                                                                                                              |
 | `--no-git`             | Flag     | Skip git repository initialization                                                                                                                                                           |
@@ -216,6 +217,9 @@ specify init my-project --ai shai
 # Initialize with IBM Bob support
 specify init my-project --ai bob
 
+# Initialize with Antigravity support
+specify init my-project --ai antigravity
+
 # Initialize with PowerShell scripts (Windows/cross-platform)
 specify init my-project --ai copilot --script ps
 

diff --git a/docs/installation.md b/docs/installation.md
@@ -3,7 +3,7 @@
 ## Prerequisites
 
 - **Linux/macOS** (or Windows; PowerShell scripts now supported without WSL)
-- AI coding agent: [Claude Code](https://www.anthropic.com/claude-code), [GitHub Copilot](https://code.visualstudio.com/), [Codebuddy CLI](https://www.codebuddy.ai/cli) or [Gemini CLI](https://github.com/google-gemini/gemini-cli)
+- AI coding agent: [Claude Code](https://www.anthropic.com/claude-code), [GitHub Copilot](https://code.visualstudio.com/), [Codebuddy CLI](https://www.codebuddy.ai/cli), [Gemini CLI](https://github.com/google-gemini/gemini-cli), or [Antigravity](https://deepmind.google/)
 - [uv](https://docs.astral.sh/uv/) for package management
 - [Python 3.11+](https://www.python.org/downloads/)
 - [Git](https://git-scm.com/downloads)

diff --git a/pyproject.toml b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "specify-cli"
-version = "0.0.22"
+version = "0.0.23"
 description = "Specify CLI, part of GitHub Spec Kit. A tool to bootstrap your projects for Spec-Driven Development (SDD)."
 requires-python = ">=3.11"
 dependencies = [

diff --git a/scripts/bash/update-agent-context.sh b/scripts/bash/update-agent-context.sh
@@ -35,7 +35,7 @@
 #    - Creates default Claude file if no agent files exist
 #
 # Usage: ./update-agent-context.sh [agent_type]
-# Agent types: claude|gemini|copilot|cursor-agent|qwen|opencode|codex|windsurf|kilocode|auggie|shai|q|bob|qoder
+# Agent types: claude|gemini|copilot|cursor-agent|qwen|opencode|codex|windsurf|kilocode|auggie|shai|q|bob|qoder|antigravity
 # Leave empty to update all existing agent files
 
 set -e
@@ -75,6 +75,7 @@ AMP_FILE="$REPO_ROOT/AGENTS.md"
 SHAI_FILE="$REPO_ROOT/SHAI.md"
 Q_FILE="$REPO_ROOT/AGENTS.md"
 BOB_FILE="$REPO_ROOT/AGENTS.md"
+ANTIGRAVITY_FILE="$REPO_ROOT/.agent/rules/specify-rules.md"
 
 # Template file
 TEMPLATE_FILE="$REPO_ROOT/.specify/templates/agent-file-template.md"
@@ -633,9 +634,12 @@ update_specific_agent() {
         bob)
             update_agent_file "$BOB_FILE" "IBM Bob"
             ;;
+        antigravity)
+            update_agent_file "$ANTIGRAVITY_FILE" "Antigravity"
+            ;;
         *)
             log_error "Unknown agent type '$agent_type'"
-            log_error "Expected: claude|gemini|copilot|cursor-agent|qwen|opencode|codex|windsurf|kilocode|auggie|roo|amp|shai|q|bob|qoder"
+            log_error "Expected: claude|gemini|copilot|cursor-agent|qwen|opencode|codex|windsurf|kilocode|auggie|roo|amp|shai|q|bob|qoder|antigravity"
             exit 1
             ;;
     esac
@@ -720,6 +724,11 @@ update_all_existing_agents() {
         found_agent=true
     fi
 
+    if [[ -f "$ANTIGRAVITY_FILE" ]]; then
+        update_agent_file "$ANTIGRAVITY_FILE" "Antigravity"
+        found_agent=true
+    fi
+
     # If no agent files exist, create a default Claude file
     if [[ "$found_agent" == false ]]; then
         log_info "No existing agent files found, creating default Claude file..."
@@ -744,7 +753,7 @@ print_summary() {
 
     echo
 
-    log_info "Usage: $0 [claude|gemini|copilot|cursor-agent|qwen|opencode|codex|windsurf|kilocode|auggie|codebuddy|shai|q|bob|qoder]"
+    log_info "Usage: $0 [claude|gemini|copilot|cursor-agent|qwen|opencode|codex|windsurf|kilocode|auggie|codebuddy|shai|q|bob|qoder|antigravity]"
 }
 
 #==============================================================================

diff --git a/scripts/powershell/update-agent-context.ps1 b/scripts/powershell/update-agent-context.ps1
@@ -25,7 +25,7 @@ Relies on common helper functions in common.ps1
 #>
 param(
     [Parameter(Position=0)]
-    [ValidateSet('claude','gemini','copilot','cursor-agent','qwen','opencode','codex','windsurf','kilocode','auggie','roo','codebuddy','amp','shai','q','bob','qoder')]
+    [ValidateSet('claude','gemini','copilot','cursor-agent','qwen','opencode','codex','windsurf','kilocode','auggie','roo','codebuddy','amp','shai','q','bob','qoder','antigravity')]
     [string]$AgentType
 )
 
@@ -60,6 +60,7 @@ $AMP_FILE      = Join-Path $REPO_ROOT 'AGENTS.md'
 $SHAI_FILE     = Join-Path $REPO_ROOT 'SHAI.md'
 $Q_FILE        = Join-Path $REPO_ROOT 'AGENTS.md'
 $BOB_FILE      = Join-Path $REPO_ROOT 'AGENTS.md'
+$ANTIGRAVITY_FILE = Join-Path $REPO_ROOT '.agent/rules/specify-rules.md'
 
 $TEMPLATE_FILE = Join-Path $REPO_ROOT '.specify/templates/agent-file-template.md'
 
@@ -388,7 +389,8 @@ function Update-SpecificAgent {
         'shai'     { Update-AgentFile -TargetFile $SHAI_FILE     -AgentName 'SHAI' }
         'q'        { Update-AgentFile -TargetFile $Q_FILE        -AgentName 'Amazon Q Developer CLI' }
         'bob'      { Update-AgentFile -TargetFile $BOB_FILE      -AgentName 'IBM Bob' }
-        default { Write-Err "Unknown agent type '$Type'"; Write-Err 'Expected: claude|gemini|copilot|cursor-agent|qwen|opencode|codex|windsurf|kilocode|auggie|roo|codebuddy|amp|shai|q|bob|qoder'; return $false }
+        'antigravity' { Update-AgentFile -TargetFile $ANTIGRAVITY_FILE -AgentName 'Antigravity' }
+        default { Write-Err "Unknown agent type '$Type'"; Write-Err 'Expected: claude|gemini|copilot|cursor-agent|qwen|opencode|codex|windsurf|kilocode|auggie|roo|codebuddy|amp|shai|q|bob|qoder|antigravity'; return $false }
     }
 }
 
@@ -410,6 +412,7 @@ function Update-AllExistingAgents {
     if (Test-Path $SHAI_FILE)     { if (-not (Update-AgentFile -TargetFile $SHAI_FILE     -AgentName 'SHAI')) { $ok = $false }; $found = $true }
     if (Test-Path $Q_FILE)        { if (-not (Update-AgentFile -TargetFile $Q_FILE        -AgentName 'Amazon Q Developer CLI')) { $ok = $false }; $found = $true }
     if (Test-Path $BOB_FILE)      { if (-not (Update-AgentFile -TargetFile $BOB_FILE      -AgentName 'IBM Bob')) { $ok = $false }; $found = $true }
+    if (Test-Path $ANTIGRAVITY_FILE) { if (-not (Update-AgentFile -TargetFile $ANTIGRAVITY_FILE -AgentName 'Antigravity')) { $ok = $false }; $found = $true }
     if (-not $found) {
         Write-Info 'No existing agent files found, creating default Claude file...'
         if (-not (Update-AgentFile -TargetFile $CLAUDE_FILE -AgentName 'Claude Code')) { $ok = $false }
@@ -424,7 +427,7 @@ function Print-Summary {
     if ($NEW_FRAMEWORK) { Write-Host "  - Added framework: $NEW_FRAMEWORK" }
     if ($NEW_DB -and $NEW_DB -ne 'N/A') { Write-Host "  - Added database: $NEW_DB" }
     Write-Host ''
-    Write-Info 'Usage: ./update-agent-context.ps1 [-AgentType claude|gemini|copilot|cursor-agent|qwen|opencode|codex|windsurf|kilocode|auggie|roo|codebuddy|amp|shai|q|bob|qoder]'
+    Write-Info 'Usage: ./update-agent-context.ps1 [-AgentType claude|gemini|copilot|cursor-agent|qwen|opencode|codex|windsurf|kilocode|auggie|roo|codebuddy|amp|shai|q|bob|qoder|antigravity]'
 }
 
 function Main {

diff --git a/src/specify_cli/__init__.py b/src/specify_cli/__init__.py
@@ -226,6 +226,12 @@ def _format_rate_limit_error(status_code: int, headers: httpx.Headers, url: str)
         "install_url": None,  # IDE-based
         "requires_cli": False,
     },
+    "antigravity": {
+        "name": "Antigravity",
+        "folder": ".agent/",
+        "install_url": None,  # IDE-based
+        "requires_cli": False,
+    },
 }
 
 SCRIPT_TYPE_CHOICES = {"sh": "POSIX Shell (bash/zsh)", "ps": "PowerShell"}
@@ -945,7 +951,7 @@ def ensure_executable_scripts(project_path: Path, tracker: StepTracker | None =
 @app.command()
 def init(
     project_name: str = typer.Argument(None, help="Name for your new project directory (optional if using --here, or use '.' for current directory)"),
-    ai_assistant: str = typer.Option(None, "--ai", help="AI assistant to use: claude, gemini, copilot, cursor-agent, qwen, opencode, codex, windsurf, kilocode, auggie, codebuddy, amp, shai, q, bob, or qoder "),
+    ai_assistant: str = typer.Option(None, "--ai", help="AI assistant to use: claude, gemini, copilot, cursor-agent, qwen, opencode, codex, windsurf, kilocode, auggie, codebuddy, amp, shai, q, bob, qoder, or antigravity"),
     script_type: str = typer.Option(None, "--script", help="Script type to use: sh or ps"),
     ignore_agent_tools: bool = typer.Option(False, "--ignore-agent-tools", help="Skip checks for AI agent tools like Claude Code"),
     no_git: bool = typer.Option(False, "--no-git", help="Skip git repository initialization"),