- The one-line-field check got the step's name as 「#14（輸入框…）」 on the box and never
matched, so the select-and-paste never ran there and addresses still came out mangled. It
reads both forms now, with a test on the script the box runs.
- Trouble twice in a turn and the rest of the turn is the bot's own model's (a quick model
guessed its way through Mousepad's save dialog for 79 steps).
- A name that isn't on the screen comes back with the names close to it ([12]「New Window」…),
so the step is put right at once.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Uirha5F5gJt93t3yEx3XcS
- Typed into the middle of Chromium's 「about:blank」, an address came out as
chrome://blankchrome//settings/search, and every step after it went wrong. Typing into a
field by name or number now selects a one-line field's text first (ctrl+a / cmd+a) so the
text replaces it; append=true keeps it. Text areas are left alone.
- A model sending name plus x: 0, y: 0 had its click land in the screen's corner: a name (or
number) now always wins over coordinates.
- After the VM went down hard, the box's first start failed in gVisor ("mount source already
has a filestore file … repeated submounts are not supported") and the second worked: waking
or restarting the box tries once more on exactly that error.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Uirha5F5gJt93t3yEx3XcS
Measured on the bot's own box (8 tasks x 2, grok-4.7): 14/16 done, 120 steps, 1114 s before;
16/16, 102 steps, 574 s after (model time 1015 -> 471 s). A replayed skill: 49 s -> 15 s.
Knowing the machine
- facts.rs: 電腦現況 per computer (system, desktop, systemd, sudo, network, package manager,
tools, apps, a fixed TZ), read once by a small read-only probe, kept 30 min, in the
instructions at the start of a turn.
- The box's sudo is the bot's: only what follows sudo is checked against the always-denied
list (it was refused outright, while the instructions said it could sudo), and commands with
sudo run as the box's root (setuid does nothing under gVisor).
- Box image v8 drops ENV TZ=UTC (it overrode /etc/localtime). ANYBOT_BOX_IMAGE /
ANYBOT_BOX_VOLUME give a throwaway box its own image and volume, never adopting the real one.
- Mac shell sandbox: App Store app CLIs (they carry their own app sandbox) and ps/top run
outside it; plain `osascript -e` too, asked the first time even in direct mode, refusing do
shell script, terminals, keystrokes, file reads, ObjC and the secret folders. A command the
sandbox broke says so, instead of looking like a broken program.
Reaching what it sees
- The Mac menu bar's status icons are numbered (each app's AXExtrasMenuBar, named from inside
for the system's own), computer_use_zoom looks closer at full sharpness.
- Numbers stay with their controls from look to look (they were reassigned every look, so a
step's second click landed elsewhere); the box's front window is listed first; a control can
be named instead of numbered (name "4").
- Web page numbering walks open shadow DOM (Chromium settings, web components).
- A box on a Docker host elsewhere retries the next port when the usual one is taken (a retry
without it came up with no network).
Working like a person
- Instructions: pick the route, know what done looks like, one route, check once, say what's
stuck instead of faking it with a substitute, ask before cutting the connection.
- StepPlan: the bot's model takes the first step, the step after trouble (failed, refused,
repeated, nothing changed on screen, the quick model switching routes), one in four, and the
final check; a quick model (Bot.step_model, auto: grok-4.20-0309-non-reasoning on xAI) does
the planned steps in between, falling back to the bot's model if it can't be used.
- Skills keep the steps that worked (with what each acted on, not numbers); replay_skill does
them again with no model in between, finding each control again, handing back on a mismatch.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Uirha5F5gJt93t3yEx3XcS
A bot asked to open a Threads profile clicked an empty strip ten times: it guessed coordinates
from a picture, and the web tools' description told it they didn't work on its own computer.
- marks.rs: the picture a bot gets has every button, link, field and menu item boxed and
numbered (a tiny built-in digit font, pure Rust), with the same numbers in a list. click /
typing / scroll / mouse_move take the number (ref) and land on the control's centre.
- Where the controls come from: macOS AX and Linux AT-SPI through agent-desktop on a person's
computer (desktop::elements); AT-SPI in the bots' own computer (box/a11y, after XBot's
box-a11y), web pages included. On a Mac a control whose spot another app's window covers gets
no number (topmost window at its centre must be the app's; the Dock's invisible full-screen
window doesn't count). open_app waits until the app is really in front.
- No going round in circles: a step that changed nothing says so; the same step (clicks within
16 px) a third time in a turn comes with a warning, from the fourth time it isn't run.
- The box (version 4): one TigerVNC server instead of Xvfb + x11vnc, the AT-SPI bus and registry
at boot, one browser launcher (box/browser, after XBot's box-chrome: same profile and CDP,
renderer accessibility, a launch lock, stale profile locks cleared). One docker exec per look
(list + picture, ~0.4 s). A brain updates an older box by itself when it has been idle a
minute (files and logins stay); a new box is never made from an older image.
- Gone: computer_use_read_app (the list is in every picture), computer_use_mouse_button, the
per-call picture for the phone (it gets a plain one), the stale browser_read note; the prompt
says web work goes through browser_* by number, and never to read browser cookie or history
files.
Tests: marks (numbering, drawing, fingerprints), box_numbers_are_exact on a box from the new
image (a Threads-like page: the icon links get numbers, Profile clicked by number, Chinese typed
into the numbered field, a click on nothing called out), box_screen_is_exact, VNC e2e 11/11 on
TigerVNC, Calculator 7×8=56 by numbers through the signed app on this Mac, remote_e2e 28/28,
153 unit tests; Linux build + 157 tests + x11_live.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
王性驊