chore(release): 0.27.0-fork.50 — tab-title truncation + multi-agent/eval/type docs

From Hermes's fork.49 re-dogfood (9/11 fixes confirmed PASS):
- tab list: a page can set its title to a multi-KB string (= a giant URL); cap
  the title column like the URL so the row stays readable.
- skill: clarify that true multi-agent isolation needs the extension-connect path
  (per-session tab groups) — raw `--cdp` shares the browser, so a sibling
  session's `open` can navigate your tab. Use the extension for concurrent agents.
- skill: prefer `eval --json` for array/object results (plain render is
  multi-line / pipe-hostile); note type/fill don't fire keydown (use `keyboard
  type` when key events are required).

(Hermes's "find-text click bypasses humanize" was a false alarm — verified both
paths curve; the apparent 1-vs-12 was cursor continuity on the same target.)

README.md

@@ -225,7 +225,7 @@ When connected to your real Chrome, we inject **zero** JavaScript patches. Your
 
 `0% stealth` on CreepJS is the key number: because the connect path patches **nothing**, there is no override for a lie-detector to catch. (Dashboards that read `navigator.languages` order or IP geolocation may show a soft "navigator"/"location" flag — that tracks *your real Chrome's* language list and network, not an automation tell.)
 
-When using `--launch` mode (standalone browser), a full suite of stealth patches is applied instead, and it still passes the suite above.
+When using `--launch` mode (standalone browser), a full suite of stealth patches is applied instead, and it passes the suite above — with one caveat: CreepJS reports **~20% stealth** because the srcdoc-iframe `contentWindow` patch trips its `hasIframeProxy` probe (the proxy that hides automation is itself a tell). Everything else is clean (`0% headless`, sannysoft/browserscan green, Cloudflare passed). Set **`AGENT_BROWSER_DISABLE_IFRAME_PROXY=1`** to drop that patch for a clean **0% stealth** (trades the niche srcdoc-iframe masking). The **extension-connect path** (your real Chrome) injects zero JS and is unaffected — it's the genuine 0% path.
 
 ### Human-like input (behavioural stealth)
 

cli/Cargo.lock

@@ -45,7 +45,7 @@ dependencies = [
 
 [[package]]
 name = "agent-browser-stealth"
-version = "0.27.0-fork.47"
+version = "0.27.0-fork.50"
 dependencies = [
  "aes-gcm",
  "async-trait",

cli/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "agent-browser-stealth"
-version = "0.27.0-fork.47"
+version = "0.27.0-fork.50"
 edition = "2021"
 description = "Fast browser automation CLI for AI agents"
 license = "Apache-2.0"

cli/src/commands.rs

@@ -931,6 +931,15 @@ fn parse_command_inner(args: &[String], flags: &Flags) -> Result<Value, ParseErr
             Ok(json!({ "id": id, "action": "evaluate", "script": script }))
         }
 
+        // === Stealth self-check ===
+        "stealth" => {
+            // `stealth [status]` — local stealth self-check: mode, live probes
+            // (navigator.webdriver, window.chrome, plugins, UA), and the list of
+            // active overrides. --json for a stable machine-readable shape.
+            // (Distinct from `doctor`, which checks install/env/Chrome health.)
+            Ok(json!({ "id": id, "action": "stealth_status" }))
+        }
+
         // === Close ===
         "close" | "quit" | "exit" => Ok(json!({ "id": id, "action": "close" })),
 

cli/src/native/actions.rs

@@ -1316,6 +1316,7 @@ pub async fn execute_command(cmd: &Value, state: &mut DaemonState) -> Value {
         "content" => handle_content(state).await,
         "evaluate" => handle_evaluate(cmd, state).await,
         "close" => handle_close(state).await,
+        "stealth_status" => handle_stealth_status(state).await,
         "snapshot" => handle_snapshot(cmd, state).await,
         "screenshot" => handle_screenshot(cmd, state).await,
         "click" => handle_click(cmd, state).await,
@@ -2680,6 +2681,89 @@ async fn handle_evaluate(cmd: &Value, state: &DaemonState) -> Result<Value, Stri
     Ok(json!({ "result": result, "origin": url }))
 }
 
+/// Local stealth self-check: reports the active mode, live fingerprint probes,
+/// and the list of applied overrides — so an agent (or human) can confirm
+/// stealth is working without driving an external detector, and audit exactly
+/// what's patched on this path (issue #5).
+async fn handle_stealth_status(state: &DaemonState) -> Result<Value, String> {
+    let mgr = state.browser.as_ref().ok_or("Browser not launched")?;
+    let connect = mgr.is_cdp_connection();
+
+    let probe_js = r#"(() => {
+        const ua = navigator.userAgent || '';
+        return {
+            webdriver: navigator.webdriver === true,
+            hasWindowChrome: typeof window.chrome === 'object' && window.chrome !== null,
+            plugins: navigator.plugins ? navigator.plugins.length : 0,
+            languages: navigator.languages || [],
+            platform: navigator.platform || '',
+            headlessUA: /Headless/i.test(ua),
+        };
+    })()"#;
+    let p = mgr.evaluate(probe_js, None).await.unwrap_or(Value::Null);
+    let webdriver = p.get("webdriver").and_then(|v| v.as_bool()).unwrap_or(true);
+    let has_chrome = p
+        .get("hasWindowChrome")
+        .and_then(|v| v.as_bool())
+        .unwrap_or(false);
+    let plugins = p.get("plugins").and_then(|v| v.as_u64()).unwrap_or(0);
+    let headless_ua = p
+        .get("headlessUA")
+        .and_then(|v| v.as_bool())
+        .unwrap_or(false);
+
+    let checks = json!([
+        { "name": "navigator.webdriver is false", "pass": !webdriver },
+        { "name": "window.chrome present", "pass": has_chrome },
+        { "name": "navigator.plugins non-empty", "pass": plugins > 0, "value": plugins },
+        { "name": "userAgent has no 'Headless'", "pass": !headless_ua },
+    ]);
+    let ok = !webdriver && has_chrome && plugins > 0 && !headless_ua;
+
+    let overrides = if connect {
+        json!([
+            "navigator.webdriver=false via Emulation.setAutomationOverride (native CDP — no JS lie)",
+            "Runtime.enable OFF unless console/error capture is opted in (no rebrowser runtime leak)",
+            "zero JS patches injected — the browser's real fingerprint is used as-is",
+        ])
+    } else {
+        let iframe_proxy =
+            std::env::var("AGENT_BROWSER_DISABLE_IFRAME_PROXY").as_deref() != Ok("1");
+        json!([
+            "navigator.webdriver removed; navigator.languages/locale normalized",
+            "window.chrome / chrome.runtime shimmed; navigator.platform fixed",
+            "WebGL vendor/renderer, plugins, permissions normalized",
+            format!(
+                "srcdoc-iframe contentWindow proxy: {} (CreepJS hasIframeProxy)",
+                if iframe_proxy {
+                    "ON — set AGENT_BROWSER_DISABLE_IFRAME_PROXY=1 for clean 0%"
+                } else {
+                    "off"
+                }
+            ),
+            format!(
+                "canvas/audio noise: {} (AGENT_BROWSER_HIDE_CANVAS)",
+                if std::env::var("AGENT_BROWSER_HIDE_CANVAS").as_deref() == Ok("1") {
+                    "on"
+                } else {
+                    "off (opt-in)"
+                }
+            ),
+            "Chrome flags: --disable-blink-features=AutomationControlled, ANGLE GL",
+        ])
+    };
+
+    Ok(json!({
+        "stealthStatus": {
+            "mode": if connect { "connect (your real Chrome — strongest)" } else { "launch (standalone)" },
+            "ok": ok,
+            "checks": checks,
+            "overrides": overrides,
+            "probe": p,
+        }
+    }))
+}
+
 async fn handle_close(state: &mut DaemonState) -> Result<Value, String> {
     if let Some(ref mgr) = state.browser {
         if let Some(ref session_name) = state.session_name {

cli/src/native/stealth.rs

@@ -51,18 +51,19 @@ pub fn build_stealth_script(mode: StealthMode, locale: Option<&str>) -> String {
         vec![locale, base_lang]
     };
     let config_line = format!(
-        r#"const __abStealth = {{ locale: "{}", languages: {}, allowWebGLContextFallback: false, hideCanvas: {}, canvasSeed: {} }};"#,
+        r#"const __abStealth = {{ locale: "{}", languages: {}, allowWebGLContextFallback: false, hideCanvas: {}, canvasSeed: {}, disableIframeProxy: {} }};"#,
         locale,
         serde_json::to_string(&languages).unwrap_or_else(|_| r#"["en-US","en"]"#.to_string()),
         hide_canvas_enabled(),
         canvas_noise_seed(),
+        disable_iframe_proxy_enabled(),
     );
 
     // NB: this prefix MUST match the first line of stealth_scripts.js verbatim,
     // otherwise the fallback below prepends a SECOND `const __abStealth`
     // declaration and the whole script dies with a redeclaration SyntaxError.
     if let Some(rest) = STEALTH_SCRIPTS_RAW.strip_prefix(
-        r#"const __abStealth = { locale: "en-US", languages: ["en-US", "en"], allowWebGLContextFallback: false, hideCanvas: false, canvasSeed: 0 };"#,
+        r#"const __abStealth = { locale: "en-US", languages: ["en-US", "en"], allowWebGLContextFallback: false, hideCanvas: false, canvasSeed: 0, disableIframeProxy: false };"#,
     ) {
         format!("{}{}", config_line, rest)
     } else {
@@ -81,6 +82,18 @@ fn hide_canvas_enabled() -> bool {
         .unwrap_or(false)
 }
 
+/// Whether to DROP the srcdoc-iframe `contentWindow` Proxy patch (FullLaunch).
+/// That patch masks automation in srcdoc iframes, but the JS `Proxy` is itself a
+/// fingerprintable tell (CreepJS `hasIframeProxy` → ~20% stealth). Off by default
+/// (keep the patch); `AGENT_BROWSER_DISABLE_IFRAME_PROXY=1` drops it for a clean
+/// 0% CreepJS at the cost of that niche srcdoc-iframe masking.
+fn disable_iframe_proxy_enabled() -> bool {
+    std::env::var("AGENT_BROWSER_DISABLE_IFRAME_PROXY")
+        .ok()
+        .map(|v| v == "1" || v.eq_ignore_ascii_case("true"))
+        .unwrap_or(false)
+}
+
 /// A per-process seed so canvas/audio noise is STABLE within a session (a real
 /// device returns the same hash on repeated reads) but differs from the
 /// headless-stable default. 0 is avoided so the JS can treat it as "unset".

cli/src/native/stealth_scripts.js

@@ -1,4 +1,4 @@
-const __abStealth = { locale: "en-US", languages: ["en-US", "en"], allowWebGLContextFallback: false, hideCanvas: false, canvasSeed: 0 };
+const __abStealth = { locale: "en-US", languages: ["en-US", "en"], allowWebGLContextFallback: false, hideCanvas: false, canvasSeed: 0, disableIframeProxy: false };
 // Redefine a navigator property on its PROTOTYPE (Navigator / WorkerNavigator),
 // the way real Chrome exposes these — as prototype getters, NOT instance own
 // properties. Adding an own property to the `navigator` instance is itself a
@@ -289,6 +289,10 @@ const __abRedefineNavProto = (name, getterImpl) => {
 })();
 (function(){
   if (typeof document === 'undefined' || typeof document.createElement !== 'function') return;
+  // The srcdoc-iframe contentWindow Proxy below is itself a fingerprintable tell
+  // (CreepJS `hasIframeProxy`). Honor the opt-out so callers can trade the niche
+  // srcdoc masking for a clean 0% CreepJS fingerprint.
+  if (typeof __abStealth !== 'undefined' && __abStealth.disableIframeProxy) return;
   const nativeCreateElement = document.createElement.bind(document);
   const nativeSrcdocDescriptor =
     typeof HTMLIFrameElement !== 'undefined'

cli/src/output.rs

@@ -352,6 +352,39 @@ pub fn print_response_with_opts(resp: &Response, action: Option<&str>, opts: &Ou
             println!("{}", enabled);
             return;
         }
+        // Stealth self-check (`stealth status` / `doctor`)
+        if let Some(s) = data.get("stealthStatus") {
+            let ok = s.get("ok").and_then(|v| v.as_bool()).unwrap_or(false);
+            let mode = s.get("mode").and_then(|v| v.as_str()).unwrap_or("?");
+            println!(
+                "{} stealth: {}  ·  mode: {}",
+                if ok {
+                    color::success_indicator().to_string()
+                } else {
+                    color::cyan("•")
+                },
+                if ok {
+                    "all checks pass"
+                } else {
+                    "some checks need attention"
+                },
+                mode
+            );
+            if let Some(checks) = s.get("checks").and_then(|v| v.as_array()) {
+                for c in checks {
+                    let pass = c.get("pass").and_then(|v| v.as_bool()).unwrap_or(false);
+                    let name = c.get("name").and_then(|v| v.as_str()).unwrap_or("");
+                    println!("  {} {}", if pass { "✓" } else { "✗" }, name);
+                }
+            }
+            if let Some(ovs) = s.get("overrides").and_then(|v| v.as_array()) {
+                println!("  applied overrides:");
+                for o in ovs.iter().filter_map(|v| v.as_str()) {
+                    println!("    {}", color::dim(&format!("· {o}")));
+                }
+            }
+            return;
+        }
         if let Some(checked) = data.get("checked").and_then(|v| v.as_bool()) {
             println!("{}", checked);
             return;
@@ -445,6 +478,11 @@ pub fn print_response_with_opts(resp: &Response, action: Option<&str>, opts: &Ou
                     .get("title")
                     .and_then(|v| v.as_str())
                     .unwrap_or("Untitled");
+                // A page can set its title to a multi-KB string (e.g. equal to a
+                // giant JWT/OTP URL); truncate it like the URL so the row stays
+                // readable.
+                let title = truncate_middle(title, 120);
+                let title = title.as_str();
                 let url = tab.get("url").and_then(|v| v.as_str()).unwrap_or("");
                 // Truncate very long URLs (e.g. multi-KB JWT/OTP login links) so
                 // the list stays readable instead of flooding the terminal.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "agent-browser-stealth",
-  "version": "0.27.0-fork.47",
+  "version": "0.27.0-fork.50",
   "description": "Browser automation CLI for AI agents — stealth fork with anti-detection",
   "type": "module",
   "packageManager": "pnpm@11.1.3",

skill-data/core/SKILL.md

@@ -408,6 +408,13 @@ top-level `const x`/`let x`/`var x` in one call collides with the next
 names, assign to `window.x`, or wrap the body in an IIFE
 (`(() => { const x = …; return x; })()`).
 
+**For array/object results, use `eval --json`** — the plain renderer
+pretty-prints across multiple lines, which `tail`/`head`/pipes mangle; `--json`
+emits one parseable line. Also note **`type`/`fill` insert text without firing
+`keydown`/`keyup`** (CDP insertText) — the value lands, but a page that gates on
+key events (some search-as-you-type widgets) won't react; use `keyboard type` (or
+`press` per key) when real keystrokes are required.
+
 ### Screenshot
 
 ```bash
@@ -451,6 +458,19 @@ agent-browser --session b fill @e1 "bob@test.com"
 `AGENT_BROWSER_SESSION=myapp` sets the default session for the current
 shell.
 
+**Concurrent agents MUST each use a distinct `--session <name>`.** Within one
+session, commands are pinned to the tab you opened (by target_id, so a foreign
+tab can't drift your `eval`/`screenshot`). Two agents sharing the *same* session
+(e.g. both on the bare default) share one daemon and one active tab and will
+clobber each other.
+
+True multi-agent isolation requires the **extension-connect path**: each
+`--session` gets its own colored Chrome tab group, so sessions never touch each
+other's tabs. **Raw `--cdp <port>` does NOT isolate** — every session attaches to
+the same browser's existing targets, so a second session's first `open` can
+navigate a sibling's tab. For concurrent agents on one real Chrome, use the
+extension (each with a distinct `--session`), not raw `--cdp`.
+
 ### Mock network requests
 
 ```bash
@@ -520,6 +540,10 @@ agent-browser doctor                     # full diagnosis (env, Chrome, daemons,
 agent-browser doctor --offline --quick   # fast, local-only
 agent-browser doctor --fix               # also run destructive repairs (reinstall Chrome, purge old state, ...)
 agent-browser doctor --json              # structured output for programmatic consumption
+agent-browser stealth status             # stealth self-check: mode + live probes
+agent-browser stealth status --json      #   (webdriver/chrome/plugins/UA) + applied
+                                         #   overrides. Gate a sensitive flow on this
+                                         #   instead of driving an external detector.
 ```
 
 `doctor` auto-cleans stale socket/pid/version sidecar files on every run.