Add Antigravity CLI provider integration

CHANGELOG.md

@@ -9,8 +9,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Antigravity CLI joins the provider list. Install it with `curl -fsSL https://antigravity.google/cli/install.sh | bash`, then run `agy` to sign in. MonoCode uses its official streaming protocol for live sessions, model discovery, persistent conversations, skills, and staged image, video, audio, document, and file attachments.
 - Settings → General → Diff view: Editor or Unified. Unified stacks every working-tree change in one **Changes** tab — GitHub-style review, editor syntax colours, sticky file headers and line numbers, and a single horizontal scroll that stops at the end of the line. Editor keeps the previous per-file working-tree tabs.
 
+### Fixed
+
+- Long Antigravity turns can run for up to 30 minutes instead of being cut off by the CLI's five-minute print-mode default, and a failed turn is shown only once in the transcript.
+
 ## [0.1.29] - 2026-09-02
 
 ### Added

NOTICE

@@ -1,4 +1,4 @@
 MonoCode is not affiliated with, endorsed by, or sponsored by the makers of the
 agent harnesses it can drive.
 
-Provider marks that appear in the UI (including Claude, Codex, Cursor, Grok, OpenCode, Pi, omp, and fx) are trademarks of their respective owners and are used only to identify those products.
+Provider marks that appear in the UI (including Claude, Codex, Cursor, Grok, Antigravity, OpenCode, Pi, omp, and fx) are trademarks of their respective owners and are used only to identify those products.

README.md

@@ -12,7 +12,7 @@
   <img src="docs/screenshot.jpg" alt="MonoCode with sessions, agent chat, diffs, terminal, and editor" width="920" />
 </p>
 
-Works with your subscriptions on Claude Code, Codex, Cursor, Grok Build, OpenCode, Pi, omp, and fx. If they’re installed and logged in, MonoCode can run them. Tabs are sessions. The composer is the input. MonoCode does not sell tokens.
+Works with your subscriptions on Claude Code, Codex, Cursor, Grok Build, Antigravity, OpenCode, Pi, omp, and fx. If they’re installed and logged in, MonoCode can run them. Tabs are sessions. The composer is the input. MonoCode does not sell tokens.
 
 ## Install
 
@@ -22,6 +22,7 @@ Works with your subscriptions on Claude Code, Codex, Cursor, Grok Build, OpenCod
 > - [Codex](https://developers.openai.com/codex/cli) - `codex login`
 > - [Cursor CLI](https://cursor.com/cli) - `agent login`
 > - [Grok Build](https://docs.x.ai/build/overview) - `curl -fsSL https://x.ai/cli/install.sh | bash` then `grok login`
+> - [Antigravity CLI](https://antigravity.google/docs/cli/overview) - `curl -fsSL https://antigravity.google/cli/install.sh | bash` then run `agy` to sign in
 > - [OpenCode](https://opencode.ai) - `opencode auth login`
 > - [Pi](https://pi.dev/) - `npm install -g @earendil-works/pi-coding-agent`
 > - [omp](https://omp.sh) - `curl -fsSL https://omp.sh/install | sh`

src-tauri/src/harness.rs

@@ -304,6 +304,19 @@ pub fn harness_resolve_grok() -> Result<CursorBinary, String> {
         })
 }
 
+/// Resolve the Google Antigravity CLI (`agy`).
+#[tauri::command(async)]
+pub fn harness_resolve_antigravity() -> Result<CursorBinary, String> {
+    resolve_antigravity()
+        .map(|path| CursorBinary {
+            path: path.to_string_lossy().into_owned(),
+        })
+        .ok_or_else(|| {
+            "Antigravity CLI not found. Install it with `curl -fsSL https://antigravity.google/cli/install.sh | bash` and run `agy login`, then retry."
+                .into()
+        })
+}
+
 /// Bind an ephemeral loopback port for `opencode serve`.
 #[tauri::command]
 pub fn harness_free_port() -> Result<u16, String> {
@@ -634,6 +647,10 @@ const EXEC_ALLOWED_ARGS: &[&[&str]] = &[
     &["models"],
     &["status", "--json"],
     &["agent", "list"],
+    &["--output-format", "json", "models"],
+    &["--output-format", "json", "agents"],
+    &["--output-format", "json", "-p", "/usage"],
+    &["-p", "/usage"],
 ];
 
 fn exec_args_allowed(args: &[String]) -> bool {
@@ -655,6 +672,7 @@ fn is_resolved_harness_binary(command: &str) -> bool {
         resolve_omp(),
         resolve_fx(),
         resolve_grok(),
+        resolve_antigravity(),
     ]
     .into_iter()
     .flatten()
@@ -688,11 +706,15 @@ fn exec_capture(command: &str, args: &[String], cwd: Option<&str>) -> Result<Str
         .stdout(Stdio::piped())
         .stderr(Stdio::piped());
     prepare_child(&mut cmd, command);
-    if let Some(dir) = cwd {
-        let workdir = expand_home(dir);
-        if workdir.is_dir() {
-            cmd.current_dir(workdir);
-        }
+    let workdir = cwd
+        .map(expand_home)
+        .filter(|path| path.is_dir())
+        .or_else(|| dirs_home().map(PathBuf::from).filter(|path| path.is_dir()));
+    if let Some(workdir) = workdir {
+        // One-shot probes must never inherit the GUI process directory. On
+        // macOS that can be `/`, which lets agy treat the whole machine as its
+        // workspace when a caller forgot to provide a cwd.
+        cmd.current_dir(workdir);
     }
 
     let child = cmd
@@ -704,7 +726,7 @@ fn exec_capture(command: &str, args: &[String], cwd: Option<&str>) -> Result<Str
         let _ = tx.send(child.wait_with_output());
     });
 
-    match rx.recv_timeout(Duration::from_secs(15)) {
+    match rx.recv_timeout(Duration::from_secs(90)) {
         Ok(Ok(output)) => {
             let stdout = String::from_utf8_lossy(&output.stdout).into_owned();
             if output.status.success() || !stdout.trim().is_empty() {
@@ -935,6 +957,7 @@ fn is_harness_argv_token(part: &str) -> bool {
             | "codex"
             | "opencode"
             | "grok"
+            | "agy"
             | "omp"
             | "fx"
             | "pi"
@@ -1353,6 +1376,51 @@ fn resolve_grok() -> Option<PathBuf> {
     candidates.into_iter().find(|path| is_grok_agent(path))
 }
 
+fn resolve_antigravity() -> Option<PathBuf> {
+    let home = dirs_home().map(PathBuf::from);
+    let mut candidates: Vec<PathBuf> = Vec::new();
+
+    // The official installer uses ~/.local/bin. Keep this stable shim ahead
+    // of PATH so upgrades do not turn into a new macOS TCC identity.
+    if let Some(home) = &home {
+        for name in antigravity_binary_names() {
+            candidates.push(home.join(".local/bin").join(name));
+            candidates.push(home.join(".gemini/bin").join(name));
+            candidates.push(home.join(".antigravity/bin").join(name));
+        }
+        #[cfg(target_os = "windows")]
+        for name in antigravity_binary_names() {
+            candidates.push(home.join("AppData/Local/Antigravity/bin").join(name));
+        }
+    }
+    #[cfg(target_os = "macos")]
+    for name in antigravity_binary_names() {
+        candidates.push(PathBuf::from("/opt/homebrew/bin").join(name));
+    }
+    for name in antigravity_binary_names() {
+        candidates.push(PathBuf::from("/usr/local/bin").join(name));
+        candidates.push(PathBuf::from("/usr/bin").join(name));
+        candidates.push(PathBuf::from("/snap/bin").join(name));
+    }
+    for name in antigravity_binary_names() {
+        if let Some(from_shell) = which_via_login_shell(name) {
+            candidates.push(from_shell);
+        }
+    }
+
+    candidates.into_iter().find(|path| path.is_file())
+}
+
+#[cfg(target_os = "windows")]
+fn antigravity_binary_names() -> &'static [&'static str] {
+    &["agy.exe", "agy"]
+}
+
+#[cfg(not(target_os = "windows"))]
+fn antigravity_binary_names() -> &'static [&'static str] {
+    &["agy"]
+}
+
 fn is_pi_coding_agent(path: &Path) -> bool {
     if !path.is_file() {
         return false;
@@ -2308,6 +2376,11 @@ mod tests {
         assert_eq!(command_basename("/Users/me/.grok/bin/grok"), "grok");
     }
 
+    #[test]
+    fn antigravity_uses_the_official_cli_name() {
+        assert_eq!(antigravity_binary_names(), &["agy"]);
+    }
+
     #[test]
     fn passwd_identity_resolves_the_current_user() {
         let id = passwd_identity().expect("passwd");
@@ -2333,6 +2406,16 @@ mod exec_allowlist_tests {
         assert!(exec_args_allowed(&args(&["models"])));
         assert!(exec_args_allowed(&args(&["status", "--json"])));
         assert!(exec_args_allowed(&args(&["agent", "list"])));
+        assert!(exec_args_allowed(&args(&[
+            "--output-format",
+            "json",
+            "models"
+        ])));
+        assert!(exec_args_allowed(&args(&[
+            "--output-format",
+            "json",
+            "agents"
+        ])));
     }
 
     #[test]
@@ -2449,6 +2532,9 @@ mod reap_logic_tests {
             "/opt/homebrew/bin/node /Users/n/.local/share/cursor-agent/versions/x/index.js worker-server"
         ));
         assert!(looks_like_harness_argv("/Users/n/.local/bin/claude --help"));
+        assert!(looks_like_harness_argv(
+            "/Users/n/.local/bin/agy --input-format stream-json"
+        ));
         assert!(!looks_like_harness_argv("tmux new -s work"));
         assert!(!looks_like_harness_argv("npm start"));
         assert!(!looks_like_harness_argv(

src-tauri/src/lib.rs

@@ -225,6 +225,7 @@ pub fn run() {
             harness::harness_resolve_pi,
             harness::harness_resolve_fx,
             harness::harness_resolve_grok,
+            harness::harness_resolve_antigravity,
             harness::harness_free_port,
             harness::harness_spawn,
             harness::harness_write,

src-tauri/src/skills.rs

@@ -50,8 +50,10 @@ pub(crate) fn list_skills_from(project: &Path, home: Option<&Path>) -> Vec<Disco
 
     // Highest priority first so later roots cannot replace a name.
     add_root(project.join(".agents/skills"), "project", "agents");
+    add_root(project.join(".agent/skills"), "project", "agents");
     if let Some(home) = home {
         add_root(home.join(".agents/skills"), "user", "agents");
+        add_root(home.join(".agent/skills"), "user", "agents");
     }
 
     for (dir, source) in [
@@ -63,6 +65,8 @@ pub(crate) fn list_skills_from(project: &Path, home: Option<&Path>) -> Vec<Disco
         (".omp/skills", "omp"),
         (".fx/skills", "fx"),
         (".grok/skills", "grok"),
+        (".antigravity/skills", "antigravity"),
+        (".gemini/skills", "antigravity"),
     ] {
         add_root(project.join(dir), "project", source);
         if let Some(home) = home {
@@ -72,6 +76,26 @@ pub(crate) fn list_skills_from(project: &Path, home: Option<&Path>) -> Vec<Disco
     if let Some(home) = home {
         add_root(home.join(".pi/agent/skills"), "user", "pi");
         add_root(home.join(".omp/agent/skills"), "user", "omp");
+        // Antigravity CLI keeps global skills alongside its Gemini-compatible
+        // configuration and builtin skills. Workspace skills are discovered via
+        // `.agents/skills`, `.agent/skills`, `.antigravity/skills`, and `.gemini/skills`.
+        add_root(home.join(".gemini/config/skills"), "user", "antigravity");
+        add_root(
+            home.join(".gemini/antigravity-cli/skills"),
+            "user",
+            "antigravity",
+        );
+        add_root(
+            home.join(".gemini/antigravity-cli/builtin/skills"),
+            "builtin",
+            "antigravity",
+        );
+        add_root(
+            home.join(".gemini/antigravity/builtin/skills"),
+            "builtin",
+            "antigravity",
+        );
+        add_root(home.join(".antigravity/skills"), "user", "antigravity");
         for (root, scope, namespace) in claude_plugin_skill_roots(home, project) {
             add_namespaced_root(&mut by_name, root, scope, "claude", &namespace);
         }
@@ -634,6 +658,29 @@ mod tests {
         assert_eq!(user_skill.scope, "user");
     }
 
+    #[test]
+    fn discovers_antigravity_global_skill_roots() {
+        let project = tmp("proj-antigravity");
+        let home = tmp("home-antigravity");
+        write_skill(
+            &home.0.join(".gemini/config/skills"),
+            "review-code",
+            "---\nname: review-code\ndescription: Review code\n---\n",
+        );
+        write_skill(
+            &home.0.join(".gemini/antigravity-cli/skills"),
+            "ship-feature",
+            "---\nname: ship-feature\ndescription: Ship a feature\n---\n",
+        );
+
+        let skills = list_skills_from(&project.0, Some(&home.0));
+        for name in ["review-code", "ship-feature"] {
+            let skill = skills.iter().find(|skill| skill.name == name).unwrap();
+            assert_eq!(skill.source, "antigravity");
+            assert_eq!(skill.scope, "user");
+        }
+    }
+
     #[test]
     fn discovers_installed_claude_plugin_skills() {
         let project = tmp("proj-claude-plugin");

src/App.tsx

@@ -681,7 +681,7 @@ export default function App({
     const harnesses = [
       ...new Set(sessionsRef.current.map((session) => session.harness)),
     ];
-    void refreshHarnessCatalogs(harnesses).then(() => {
+    void refreshHarnessCatalogs(harnesses, projectCwd).then(() => {
       setSessions((prev) =>
         prev.map((session) => {
           if (!isLiveHarness(session.harness)) return session;
@@ -700,7 +700,7 @@ export default function App({
         }),
       );
     });
-  }, []);
+  }, [projectCwd]);
 
   const activeTab = tabs.find((t) => t.id === activeTabId) ?? tabs[0];
   const active =
@@ -756,7 +756,11 @@ export default function App({
   const busySessionIds = busySessionIdsRef.current;
 
   const usageProviders = useMemo(() => {
-    if (active?.harness === "claude" || active?.harness === "codex") {
+    if (
+      active?.harness === "claude" ||
+      active?.harness === "codex" ||
+      active?.harness === "antigravity"
+    ) {
       return [active.harness];
     }
     return [];

src/chrome/Composer.tsx

@@ -970,6 +970,7 @@ export function Composer({
                 <ModelPicker
                   harness={harness}
                   model={model}
+                  cwd={executionCwd}
                   hotkeys={hotkeys && enabled}
                   onChange={onModelChange}
                   onClose={() => ref.current?.focus()}

src/chrome/HarnessIcon.tsx

@@ -1,4 +1,5 @@
 import type { ReactNode } from "react";
+import antigravity from "../assets/providers/antigravity.svg";
 import claude from "../assets/providers/claude.svg";
 import codex from "../assets/providers/codex.svg";
 import cursor from "../assets/providers/cursor.svg";
@@ -14,6 +15,7 @@ export const HARNESS_ICONS: Record<HarnessId, string> = {
   codex,
   cursor,
   grok,
+  antigravity,
   opencode,
   pi,
   omp,

src/chrome/ModelPicker.tsx

@@ -49,6 +49,7 @@ import { MOD } from "../lib/platform";
 type Props = {
   harness: HarnessId;
   model: string;
+  cwd?: string;
   hotkeys?: boolean;
   onChange: (harness: HarnessId, model: string) => void;
   onClose?: () => void;
@@ -61,6 +62,7 @@ const MENU_MAX_HEIGHT = 340;
 export function ModelPicker({
   harness,
   model,
+  cwd,
   hotkeys = false,
   onChange,
   onClose,
@@ -143,8 +145,8 @@ export function ModelPicker({
 
   useEffect(() => {
     if (!open || visibleTab === "favorites") return;
-    void refreshHarnessCatalogs([visibleTab]);
-  }, [open, visibleTab]);
+    void refreshHarnessCatalogs([visibleTab], cwd);
+  }, [cwd, open, visibleTab]);
 
   useEffect(() => {
     const inBlockingUi = (target: EventTarget | null) => {