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agent-runner
A restart-on-exit supervisor for autonomous coding CLIs. Ships presets for Claude Code, aider, gemini, codewhale, kimi and pi; any prompt-arg CLI via custom config. Spawn the agent round-after-round under defenses that prevent the failure modes that bite in production: stuck rounds, orphan commits, OAuth burn loops, full disks, runaway memory.
┌──────────────────────────────────────────┐
│ Layer 3: The Witness (monitor) │ 14 detectors + auto-stop
├──────────────────────────────────────────┤
│ Layer 2: The Loop (serve) │ signal-trapping restart loop
├──────────────────────────────────────────┤
│ Layer 1: The Round (round) │ one agent invocation
└──────────────────────────────────────────┘
Install
pip install cli-agent-runner
The installed CLI command is agent-runner (the PyPI distribution name is
prefixed for namespace disambiguation; the import name and command are not).
Quick start
cd your-project
agent-runner init # scaffold agent-runner.toml + prompts/main.md
$EDITOR agent-runner.toml # point agent.command at your CLI
agent-runner install --monitor # systemd user units for serve + monitor
agent-runner status # confirm running
agent-runner peek # snapshot of project state
agent-runner monitor # live anomaly detection
Full walkthrough: docs/quickstart.md.
17 verbs
| Lifecycle | Observation |
|---|---|
init / install / uninstall |
peek — state snapshot |
start / stop / kill |
watch — peek in a refresh loop |
restart / status |
monitor — 14 detectors, alerts, auto-stop |
round / serve |
events — query / stream events.jsonl |
upgrade / migrate |
doctor — read-only pre-flight |
Verb reference: docs/commands.md.
Defenses (built in)
15 named defenses, structured as data — see agent-runner peek --select defenses.
Each carries the historical incident it codifies and the invariant test that
guards it. Highlights:
- round_budget_s — hard wall, never the agent's word on when to stop
- process_group_isolation — kill the round, not just the parent
- orphan_stash_idempotency_s — no 3-stashes-per-second pile-ups
- sha_locked_stash —
stash@{N}indices drift; SHAs don't - set_diff_classification — line-set comparison, not unified-diff +/- scan
- startup_smoke_check — refuse to run with a clearly-truncated prompt
Full list and rationale: docs/architecture.md.
Optionally pause the loop during off-hours: [schedule] run/pause windows gate
serve (override with serve --ignore-schedule) — see the [schedule] section
of docs/configuration.md.
Monitor: 14 detectors
Notify only: timeout_rate, hung, orphan_chain, disk_warning,
disk_growth, mem_pressure, mem_pressure_gate_inert, mem_signal_unavailable,
network_fail, rate_limit_active, anomaly_repetitive_active,
supervisor_stale. mem_pressure also drives a separate serve-loop
admission gate that defers or terminates rounds under real memory pressure —
see docs/architecture.md. An opt-in soft-brake ([monitor.host_health.brake],
default off) can additionally cap the serve leaf's memory.high under sustained
pressure on a delegated cgroup.
Auto-stop the service (continuing is harmful):
oauth_fail— burning API quota on auth-rejected roundsdisk_critical— writing to a near-full disk risks corruption
Runs against the supervised project's local logs:
agent-runner monitor # 30s poll
agent-runner monitor --json | jq -c # pipe to downstream consumers
Watch a remote host's event stream from your laptop with a managed ssh relay —
one command instead of a hand-rolled ssh … ; sleep loop:
agent-runner monitor --host pi --mode events # managed ssh relay, JSONL stdout
Detection stays on the host: --host with --mode anomaly | narrate | http
exits with an error, since the detectors and auto-stop must keep working with
your laptop closed. Full relay + SSH-trust mechanics:
docs/runbook.md § "Remote event relay & SSH trust".
Documentation
docs/quickstart.md— 5-step install + first rounddocs/commands.md— verb referencedocs/configuration.md—agent-runner.tomlschemadocs/runbook.md— operator troubleshooting (OAuth, disk, orphan)docs/architecture.md— 3-layer model, defenses-as-datadocs/memory-efficiency.md— supervisor memory footprint, measured release over release
Development
git clone https://github.com/wan9yu/cli-agent-runner.git
cd cli-agent-runner
python3 -m venv .venv && source .venv/bin/activate
pip install -e ".[dev]"
./build.sh check # full local-CI sweep
./build.sh test # unit + integration only
AGENT_RUNNER_E2E_PI=1 ./build.sh e2e # opt-in pi e2e (needs ssh alias `pi`)
Some docs/*.md blocks are generated from code — ./build.sh docs rewrites
the <!-- gen:* --> regions, and ./build.sh check verifies they are fresh.
POSIX-only (Linux, macOS). Tested under Python 3.11+ on x86_64 and aarch64.
License
1 maintainer
Metadata
1 maintainer
Release files for cli-agent-runner 0.3.11
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