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demo: self-rollback GIF tooling (scripted + real Claude Code TUI recorder)
The viral hook = zero-mount self-rollback. Two paths to a GIF: - examples/demo/self-rollback-demo.sh + docs/self-rollback.gif: a narrated, reproducible demo (real agentenv commands) of an agent changing the SYSTEM (/usr/local/bin, /etc), rolling the WHOLE env back itself, and continuing. - scripts/record-claude-tui.sh: records a REAL interactive Claude Code session (the iconic '⏺ agentenv__checkout' tool cards) rolling back its own env. Must run in a real terminal (TTY) — claude -p only prints the final answer, so the step-by-step UI can't be captured headlessly. - scripts/Dockerfile.recorder builds rewindable-claude-rec (image + asciinema + agg) so recording is fast; make-demo-gif.sh is parameterized (DEMO_SCRIPT/ DEMO_OUT); make-claude-gif.sh + _claude-gif-inner.sh drive the headless path. README GIF is left unwired until the final asset is chosen.
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‎docs/self-rollback.cast‎

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{"version": 2, "width": 100, "height": 32, "timestamp": 1781662414, "env": {"SHELL": "/bin/sh", "TERM": "xterm-256color"}}
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[0.002898, "o", "\r\n\u001b[1;36m━━━━━━━━━━ agentenv — an agent that undoes its own mistakes ━━━━━━━━━━\u001b[0m\r\n"]
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[1.210149, "o", "\u001b[0;37m🤖 I'm an AI agent running INSIDE a rewindable environment.\u001b[0m\r\n"]
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[2.511997, "o", "\u001b[0;37m🤖 Everything I do — files, system binaries, /etc, installs — is auto-snapshotted.\u001b[0m\r\n"]
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[4.822842, "o", "\r\n\u001b[1;36m━━━━━━━━━━ 1. I try an approach (and change the SYSTEM, not just files) ━━━━━━━━━━\u001b[0m\r\n"]
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[6.028564, "o", "\u001b[0;37m🤖 Adding a 'greet' command to /usr/local/bin and editing /etc/motd...\u001b[0m\r\n"]
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[7.332756, "o", "\u001b[0;33m$ printf '#!/bin/sh\\necho hello form greet\\n' > /usr/local/bin/greet && chmod +x /usr/local/bin/greet\u001b[0m\r\n"]
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[8.777528, "o", "\u001b[0;33m$ echo 'Welcome — managed by my agent' > /etc/motd\u001b[0m\r\n"]
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[11.214944, "o", "\u001b[0;37m🤖 Let me test it:\u001b[0m\r\n"]
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[12.521185, "o", "\u001b[0;33m$ greet\u001b[0m\r\n"]
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[12.934106, "o", "hello form greet\r\n"]
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[13.935833, "o", "\u001b[1;31m🤖 ...typo: 'form' should be 'from'. And honestly this whole approach is wrong.\u001b[0m\r\n"]
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[15.938988, "o", "\r\n\u001b[1;36m━━━━━━━━━━ 2. I roll the WHOLE environment back — MYSELF ━━━━━━━━━━\u001b[0m\r\n"]
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[17.142474, "o", "\u001b[0;37m🤖 git can't undo a system binary or /etc. I can — and I won't even restart.\u001b[0m\r\n"]
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[18.448859, "o", "\u001b[0;33m$ agentenv checkout 91638a0f22e73136a04018f5\u001b[0m\r\n"]
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[19.933249, "o", "HEAD is now 91638a0f22e73136a04018f5\r\n"]
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[20.939511, "o", "\u001b[0;37m🤖 Same agent, still running. My changes are gone — system-wide:\u001b[0m\r\n"]
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[22.246582, "o", "\u001b[0;33m$ ls /usr/local/bin/greet 2>&1 || echo 'greet: gone'\u001b[0m\r\n"]
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[22.660682, "o", "ls: cannot access '/usr/local/bin/greet': No such file or directory\r\n"]
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[22.660711, "o", "greet: gone\r\n"]
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[23.665177, "o", "\u001b[0;33m$ cat /etc/motd 2>&1 || echo '/etc/motd: restored'\u001b[0m\r\n"]
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[24.094009, "o", "\r\nThe programs included with the Debian GNU/Linux system are free software;\r\nthe exact distribution terms for each program are described in the\r\nindividual files in /usr/share/doc/*/copyright.\r\n\r\nDebian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent\r\npermitted by applicable law.\r\n"]
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[26.104633, "o", "\r\n\u001b[1;36m━━━━━━━━━━ 3. I try again, correctly — from the clean state ━━━━━━━━━━\u001b[0m\r\n"]
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[27.31163, "o", "\u001b[0;33m$ printf '#!/bin/sh\\necho hello from greet\\n' > /usr/local/bin/greet && chmod +x /usr/local/bin/greet\u001b[0m\r\n"]
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[28.733796, "o", "\u001b[0;33m$ greet\u001b[0m\r\n"]
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[29.149935, "o", "hello from greet\r\n"]
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[30.154178, "o", "\u001b[1;32m🤖 Fixed. I explored, failed, undid the whole environment, and kept going.\u001b[0m\r\n"]
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[32.156762, "o", "\r\n\u001b[1;36m━━━━━━━━━━ the history — a branch from the point I rolled back to ━━━━━━━━━━\u001b[0m\r\n"]
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[33.36001, "o", "\u001b[0;33m$ agentenv log\u001b[0m\r\n"]
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[33.767291, "o", "└─ 91638a0f22e73136a04018f5 \"init from /\" <- HEAD\r\n"]
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[34.774067, "o", "\r\n\u001b[1;32magentenv — rewind the whole environment, rootless. The agent drives it.\u001b[0m\r\n"]

‎docs/self-rollback.gif‎

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‎examples/demo/self-rollback-demo.sh‎

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#!/usr/bin/env bash
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# agentenv self-rollback demo — an agent makes SYSTEM-LEVEL changes, realizes
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# it went the wrong way, and rolls the WHOLE environment back ITSELF, then keeps
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# going. The one thing git can't do (system binaries, /etc) and the agent never
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# even restarts. Zero mounts, rootless.
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#
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# Record & render a shareable GIF: DEMO_SCRIPT=examples/demo/self-rollback-demo.sh bash scripts/make-demo-gif.sh
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set -euo pipefail
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H='\033[1;36m' # scene title
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N='\033[0;37m' # narration (the agent "thinking")
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CMD='\033[0;33m' # the actual command
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OK='\033[1;32m' # payoff
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BAD='\033[1;31m' # the mistake
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OFF='\033[0m'
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title() { printf "\n${H}━━━━━━━━━━ %s ━━━━━━━━━━${OFF}\n" "$1"; sleep 1.2; }
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say() { printf "${N}🤖 %s${OFF}\n" "$1"; sleep 1.3; }
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ae() { printf "${CMD}\$ agentenv %s${OFF}\n" "$*"; sleep 0.4; agentenv "$@"; sleep 1; }
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inenv() { printf "${CMD}\$ %s${OFF}\n" "$1"; sleep 0.4; agentenv exec -- bash -lc "$1"; sleep 1; }
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quiet() { agentenv exec -- bash -lc "$1" >/dev/null 2>&1; }
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if ! command -v agentenv >/dev/null; then
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cd /src && CGO_ENABLED=0 go build -o /tmp/agentenv . && export PATH=/tmp:$PATH
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fi
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export AGENTENV_ROOT=${AGENTENV_ROOT:-/tmp/agentfs}
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# ==========================================================================
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title "agentenv — an agent that undoes its own mistakes"
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say "I'm an AI agent running INSIDE a rewindable environment."
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say "Everything I do — files, system binaries, /etc, installs — is auto-snapshotted."
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GOOD=$(agentenv head)
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sleep 1
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title "1. Approach A — I change the SYSTEM, not just files"
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say "Installing a 'greet' command into /usr/local/bin (a system binary)..."
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inenv "printf '#!/bin/sh\necho hello form greet\n' > /usr/local/bin/greet && chmod +x /usr/local/bin/greet"
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say "Test it:"
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inenv "greet"
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printf "${BAD}🤖 Typo — 'form', not 'from'. And this whole approach is a dead end.${OFF}\n"; sleep 2
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ae commit -m "approach A (broken)"
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title "2. I roll the WHOLE environment back — MYSELF"
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say "git can't undo a system binary. I can — and I won't even restart."
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ae checkout "$GOOD"
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say "Same agent, still running. /usr/local/bin/greet is gone, system-wide:"
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inenv "command -v greet || echo 'greet: gone'"
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sleep 1
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title "3. Approach B — try again from the clean state"
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inenv "printf '#!/bin/sh\necho hello from greet\n' > /usr/local/bin/greet && chmod +x /usr/local/bin/greet"
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inenv "greet"
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ae commit -m "approach B (works)"
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printf "${OK}🤖 Fixed. I explored a dead end, undid the whole environment, kept going.${OFF}\n"; sleep 2
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title "the history — A was a dead end, B is the keeper"
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ae log
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printf "\n${OK}agentenv — rewind the whole environment, rootless. The agent drives it.${OFF}\n"
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sleep 2

‎scripts/Dockerfile.recorder‎

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# Recorder image: rewindable-claude + asciinema + agg, so make-claude-gif.sh
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# can record without re-installing the (slow) python/asciinema stack every run.
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# docker build --platform=linux/arm64 -f scripts/Dockerfile.recorder \
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# --build-arg AGG_LOCAL=... -t rewindable-claude-rec scripts/ (see make-claude-gif.sh)
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FROM rewindable-claude
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RUN sed -ri 's#deb\.debian\.org#mirrors.aliyun.com#g' /etc/apt/sources.list.d/*.sources 2>/dev/null || true \
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&& apt-get update -qq \
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&& apt-get install -y -qq python3-pip fonts-dejavu-core >/dev/null 2>&1 \
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&& (pip3 install --quiet --break-system-packages --index-url https://mirrors.aliyun.com/pypi/simple/ asciinema \
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|| pip3 install --quiet --break-system-packages asciinema)
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# agg (the cast→GIF renderer) is copied in from the build context.
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COPY agg /usr/local/bin/agg
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RUN chmod 0755 /usr/local/bin/agg
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# Restore the rewindable-claude entrypoint (FROM inherits it, but be explicit).
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ENTRYPOINT ["/usr/local/bin/rewindable-claude-entrypoint"]

‎scripts/_claude-gif-inner.sh‎

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#!/bin/bash
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# Inner command for make-claude-gif.sh, run INSIDE the rewindable-claude image
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# under asciinema. Invokes the image's own entrypoint (which runs
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# `supervise --self-rollback -- ...`) so this is the REAL Claude Code rolling
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# back its OWN environment via the agentenv__checkout MCP tool. Reads PROMPT and
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# ANTHROPIC_* from the environment.
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exec /usr/local/bin/rewindable-claude-entrypoint \
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claude --permission-mode acceptEdits --verbose \
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--allowedTools Write,Bash,mcp__agentenv__agentenv__log,mcp__agentenv__agentenv__checkout \
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-p "$PROMPT"

‎scripts/make-claude-gif.sh‎

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#!/usr/bin/env bash
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# Record a GIF of REAL Claude Code rolling back its own environment via the
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# agentenv__checkout MCP tool. Unlike the scripted demos, this runs the actual
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# `claude` binary inside the rewindable-claude image and captures its output.
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#
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# Needs the rewindable-claude image built locally and an API key in the env:
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# ANTHROPIC_API_KEY=... [ANTHROPIC_BASE_URL=... ANTHROPIC_MODEL=...] \
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# bash scripts/make-claude-gif.sh
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#
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# How it works: a small recorder container (with the docker CLI + asciinema +
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# agg, and the host docker socket mounted) records a sibling `docker run` of the
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# rewindable-claude image driving `claude -p`. Output: docs/claude-rewind.{cast,gif}.
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set -euo pipefail
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cd "$(dirname "$0")/.."
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mkdir -p docs
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: "${ANTHROPIC_API_KEY:?set ANTHROPIC_API_KEY}"
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# Default to the prebuilt recorder image (rewindable-claude + asciinema + agg);
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# build it once with scripts/Dockerfile.recorder so recording is fast.
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IMAGE="${IMAGE:-rewindable-claude-rec}"
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PLATFORM="${PLATFORM:-linux/$(uname -m | sed 's/x86_64/amd64/;s/arm64/arm64/;s/aarch64/arm64/')}"
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# The prompt: explicit steps so Claude reliably uses the MCP tools on camera.
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# MUST be a single line — it travels through several layers of shell quoting.
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PROMPT='You have agentenv MCP tools. Do these steps, printing a one-line note before each: (1) write /work/calc.py containing "def add(a, b): return a - b # BUG should be +"; (2) call agentenv__log, the first node whose message starts with "init from" is the clean start; (3) call agentenv__checkout with that node id to roll the WHOLE environment back; (4) run: cat /work/calc.py — it should be gone; (5) in one sentence, say you rolled your own environment back and are still running.'
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export PROMPT # must be exported so `docker run -e PROMPT` forwards it
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# Record INSIDE the recorder image (rewindable-claude + asciinema + agg, built
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# once via scripts/Dockerfile.recorder). asciinema records the image's own
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# entrypoint driving `claude -p` — the REAL Claude Code self-rollback.
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docker run --rm --platform="$PLATFORM" \
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--security-opt seccomp=unconfined --security-opt apparmor=unconfined \
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-v "$PWD/docs":/out \
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-v "$PWD/scripts/_claude-gif-inner.sh":/rec.sh:ro \
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-e ANTHROPIC_API_KEY -e ANTHROPIC_BASE_URL -e ANTHROPIC_MODEL -e PROMPT \
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--entrypoint bash \
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"$IMAGE" -c '
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set -e
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command -v asciinema >/dev/null || { echo "recorder image missing asciinema — build scripts/Dockerfile.recorder" >&2; exit 1; }
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# /rec.sh (mounted) invokes the image entrypoint → supervise --self-rollback
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# -- claude. asciinema records the real Claude Code session.
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TERM=xterm-256color asciinema rec --overwrite --cols 100 --rows 30 \
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-c "bash /rec.sh" /out/claude-rewind.cast
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agg --theme monokai --speed 1.5 --font-size 15 /out/claude-rewind.cast /out/claude-rewind.gif
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ls -la /out/claude-rewind.cast /out/claude-rewind.gif
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'
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echo "wrote: $(pwd)/docs/claude-rewind.gif"

‎scripts/make-demo-gif.sh‎

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cd "$(dirname "$0")/.."
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mkdir -p docs
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# Which demo to record + output basename (defaults: killer demo → docs/demo.*).
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# Override e.g.:
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# DEMO_SCRIPT=examples/demo/self-rollback-demo.sh DEMO_OUT=self-rollback \
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# bash scripts/make-demo-gif.sh
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DEMO_SCRIPT="${DEMO_SCRIPT:-examples/demo/killer-demo.sh}"
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DEMO_OUT="${DEMO_OUT:-demo}"
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# The recording happens inside Docker so this script needs no host-side tools.
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# Inside the container we:
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# 1) install asciinema (pip) and download the agg binary (Cast -> GIF renderer)
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-v "$PWD":/src \
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-v "${HOME}/go/pkg/mod":/go/pkg/mod \
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-e GOPROXY="${GOPROXY:-http://goproxy.alibaba-inc.com,direct}" \
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-e DEMO_SCRIPT="$DEMO_SCRIPT" -e DEMO_OUT="$DEMO_OUT" \
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-e PIP_INDEX_URL="${PIP_INDEX_URL:-}" -e AGG_BASE="${AGG_BASE:-https://github.com/asciinema/agg/releases/download/v1.5.0}" \
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${AGG_LOCAL:+-v "$AGG_LOCAL":/agg-local:ro} -e AGG_LOCAL="${AGG_LOCAL:+/agg-local}" \
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-w /src golang:1.26 bash -c '
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set -e
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# --- 1) install asciinema + agg as root ---
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# fonts-dejavu-core supplies DejaVu Sans Mono, one of the default agg font families.
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apt-get install -y -qq python3-pip wget ca-certificates fonts-dejavu-core >/dev/null 2>&1
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pip3 install --quiet --break-system-packages asciinema 2>/dev/null || pip3 install --quiet asciinema
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arch=$(uname -m)
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case "$arch" in
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x86_64) AGG_URL=https://github.com/asciinema/agg/releases/download/v1.5.0/agg-x86_64-unknown-linux-gnu ;;
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aarch64) AGG_URL=https://github.com/asciinema/agg/releases/download/v1.5.0/agg-aarch64-unknown-linux-gnu ;;
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*) echo "unsupported arch: $arch" >&2; exit 1 ;;
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esac
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wget -qO /usr/local/bin/agg "$AGG_URL"
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if [ -n "${AGG_LOCAL:-}" ] && [ -f "$AGG_LOCAL" ]; then
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cp "$AGG_LOCAL" /usr/local/bin/agg # host pre-fetched it (avoids a flaky github pull)
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else
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arch=$(uname -m)
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case "$arch" in
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x86_64) AGG_URL=$AGG_BASE/agg-x86_64-unknown-linux-gnu ;;
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aarch64) AGG_URL=$AGG_BASE/agg-aarch64-unknown-linux-gnu ;;
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*) echo "unsupported arch: $arch" >&2; exit 1 ;;
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esac
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wget -qO /usr/local/bin/agg "$AGG_URL"
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fi
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chmod +x /usr/local/bin/agg
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# --- 2) build agentenv as the demo user (uid 1001) ---
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"
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# --- 3a) pre-init the env OUTSIDE the recording so the GIF doesnt show the
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# ~2-minute base-image download. The demo skips init when it sees the
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# pre-seeded AGENTENV_ROOT.
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arch=$(uname -m | sed "s/x86_64/amd64/;s/aarch64/arm64/")
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: "${AGENTENV_DEMO_TARBALL:=https://cdimage.ubuntu.com/ubuntu-base/releases/24.04/release/ubuntu-base-24.04.4-base-${arch}.tar.gz}"
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# seed copy. Seed from the container rootfs (this Debian image) — no
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# foreign download, and it has /usr/local/bin + /etc + bash, which the
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# demos use. The demo skips init when it sees the pre-seeded root.
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su demo -c "
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HOME=/home/demo \
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PATH=/home/demo/bin:/usr/local/bin:/usr/bin:/bin \
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AGENTENV_ROOT=/home/demo/agentfs \
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agentenv init --tarball '$AGENTENV_DEMO_TARBALL' >/dev/null
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agentenv init --from / >/dev/null 2>&1
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"
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# --- 3b) record (still as uid 1001, the headline) ---
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su demo -c "
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AGENTENV_ROOT=/home/demo/agentfs \
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TERM=xterm-256color \
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asciinema rec --overwrite --cols 100 --rows 32 \
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-c \"bash /src/examples/demo/killer-demo.sh\" \
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/src/docs/demo.cast
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-c \"bash /src/$DEMO_SCRIPT\" \
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/src/docs/$DEMO_OUT.cast
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"
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# --- 4) render the cast to a GIF (run as root, faster) ---
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# The demo has built-in reading pauses; render at original speed so they land.
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agg --theme monokai --speed 1.0 --font-size 15 \
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/src/docs/demo.cast /src/docs/demo.gif
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ls -la /src/docs/demo.cast /src/docs/demo.gif
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/src/docs/$DEMO_OUT.cast /src/docs/$DEMO_OUT.gif
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ls -la /src/docs/$DEMO_OUT.cast /src/docs/$DEMO_OUT.gif
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'
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echo
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echo "wrote: $(pwd)/docs/demo.cast"
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echo "wrote: $(pwd)/docs/demo.gif"
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echo "wrote: $(pwd)/docs/$DEMO_OUT.cast"
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echo "wrote: $(pwd)/docs/$DEMO_OUT.gif"

‎scripts/record-claude-tui.sh‎

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#!/usr/bin/env bash
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# Record a GIF of a REAL interactive Claude Code session rolling back its own
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# environment (the iconic TUI with the "⏺ agentenv__checkout(...)" tool cards).
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#
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# IMPORTANT: run this IN YOUR TERMINAL — it needs a real TTY and you drive
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# Claude live. It cannot be produced headlessly (claude -p only prints the final
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# answer; the step-by-step tool cards exist only in the interactive UI).
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#
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# ANTHROPIC_API_KEY=... [ANTHROPIC_BASE_URL=... ANTHROPIC_MODEL=...] \
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# bash scripts/record-claude-tui.sh
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#
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# What happens: you land in Claude Code inside the rewindable sandbox. Give it a
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# task, let it work, then ask it to roll back — e.g.:
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#
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# create /work/calc.py with a bug, then use the agentenv__checkout tool to
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# roll the whole environment back to the init node, and confirm the file is gone
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#
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# Watch it call agentenv__checkout and KEEP RUNNING. Exit with Ctrl-D / /exit;
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# the GIF renders to docs/claude-rewind.gif.
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set -euo pipefail
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cd "$(dirname "$0")/.."
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: "${ANTHROPIC_API_KEY:?set ANTHROPIC_API_KEY}"
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mkdir -p docs
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IMAGE="${IMAGE:-rewindable-claude-rec}" # built via scripts/Dockerfile.recorder (has asciinema + agg)
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PLATFORM="${PLATFORM:-linux/$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/')}"
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docker run --rm -it --platform="$PLATFORM" \
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--security-opt seccomp=unconfined --security-opt apparmor=unconfined \
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-v "$PWD/docs":/out \
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-e ANTHROPIC_API_KEY -e ANTHROPIC_BASE_URL -e ANTHROPIC_MODEL \
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--entrypoint bash "$IMAGE" -lc '
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command -v asciinema agg >/dev/null || { echo "image lacks asciinema/agg — build scripts/Dockerfile.recorder" >&2; exit 1; }
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echo
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echo " Claude Code starts now, inside the rewindable env."
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echo " Try: \"write /work/calc.py with a bug, then use agentenv__checkout to roll the env back to the init node and confirm it is gone\""
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echo " Exit with Ctrl-D when done — the GIF will render."
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echo
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sleep 2
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TERM=xterm-256color asciinema rec --overwrite --cols 100 --rows 30 \
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-c "/usr/local/bin/rewindable-claude-entrypoint claude --permission-mode acceptEdits" \
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/out/claude-rewind.cast
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agg --theme monokai --speed 1.2 --font-size 15 /out/claude-rewind.cast /out/claude-rewind.gif
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echo "wrote docs/claude-rewind.gif"
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'
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echo "wrote: $(pwd)/docs/claude-rewind.gif"

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