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🎯 Why automation

DSH Core Schedule is the right tool for reminders in the current conversation: “come back to this Session in ten minutes.” dsh-automation handles a different job: “run this complete task independently every weekday and leave me a result I can inspect.”

	DSH Core Schedule	dsh-automation
Execution context	Returns to the same live Agent	Starts a fresh root Agent and Session
Input	A follow-up inside existing context	A saved, self-contained task
Scope	Current Session Log	One canonical DSH workspace
History	Conversation events	Definition revisions and durable run records
Best for	Reminders and same-chat follow-ups	Repeated or one-shot standalone coding work

If a task depends on unstated chat history, needs an interactive approval halfway through, or should react to a file, HTTP, or process condition rather than time, it is not a good automation yet.

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✨ Features

🕹️ One control plane, two ways in

• DSH Web: use the Automations conversation tab to create a rule, pause or resume it, run it now, delete it, and inspect recent runs.
• Any eligible root Agent: ask in natural language. Six scoped tools let the Agent manage automations only for its exact workspace.

There is no separate bot, daemon UI, or third-party scheduler to operate.

📅 Schedules people can read

Create a one-shot, fixed-interval, daily, or weekly rule. Daily and weekly schedules use an IANA time zone; the friendly form is normalized into a validated RFC 5545 RRULE for persistence and inspection.

🧼 A clean execution boundary every time

Each dispatched occurrence receives:

• a new Session ID and fresh root Agent;
• the saved prompt, not the source conversation history;
• the captured workspace, cwd, Agent preset, model target, and permission preset;
• an explicit automation message source containing the automation ID, run ID, and scheduled time;
• a terminal result derived from the actual DSH turn end, not merely “message delivered.”

🧾 History that explains failure as well as success

Runs progress through queued, running, and a terminal state such as succeeded, failed, skipped, or cancelled. Each record keeps its definition revision, prompt and target snapshot, scheduled time, result Session ID, bounded summary, and structured error.

Updating a definition increments its revision, so each retained run still identifies what it executed. Deleting the definition does not immediately erase those run records. Retention removes only the oldest terminal records; queued and running records are never pruned.

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⚡ Install

Install the GitHub bundle into the DSH Web profile, then restart dsh web:

dsh plugin --profile web add github:titanwings/dsh-automation#v0.1.5

The version tag keeps the install reproducible; a reviewed commit SHA is equally valid. If you run DSH from its source checkout, use pnpm dsh in place of dsh.

Install from a local checkout

Node.js 22.19 or newer is required.

git clone https://github.com/titanwings/dsh-automation.git
cd dsh-automation
pnpm install
pnpm check

cd /path/to/deepseek-harness
pnpm dsh plugin --profile web add /absolute/path/to/dsh-automation

The repository ships its built Host and Web bundles. Git installation runs no package build script and needs no allowBuilds entry.

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🚀 Quick start

🖥️ From DSH Web

1. Open a Session attached to the workspace you want to automate.
2. Select Automations next to Chat and Trajectory.
3. Enter a self-contained task, schedule, IANA time zone, and permission boundary.
4. Use Run now once before relying on the schedule; inspect the resulting Session and run record.

💬 Ask an Agent

Once installed, eligible root Agents receive the management tools. For example:

Create a read-only automation called "Weekday regression triage" for this workspace.
Run it Monday through Friday at 09:30 in Asia/Shanghai. Inspect the latest local test
evidence, identify regressions, and return a short report. Do not modify files.

Tool	Purpose
automation_create	Create a workspace-bound standalone rule.
automation_list	Read rules, next occurrences, and recent history.
automation_update	Change name, prompt, cadence, permission, or active/paused state.
automation_run_now	Queue one manual occurrence with the same boundary.
automation_runs	Read bounded run history, errors, summaries, and Session IDs.
automation_delete	Delete the definition while retaining durable run records.

Plugin-level approval asks for human confirmation when an Agent creates or expands unattended future work. Read operations and a pause-only update do not add that extra approval step.

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🧰 Good automation candidates

The best automations are repeatable, bounded, and easy to verify.

Automation	Suggested boundary	Why it is useful
Weekday regression triage	read-only	Inspect local test evidence, group failures, and leave a concise diagnosis in a new Session.
Weekly repository health report	read-only	Review stale TODOs, dependency manifests, ignored failures, and test gaps without changing the tree.
One-shot verification	read-only	Recheck a flaky failure later and preserve evidence outside the current chat.
Generated-code refresh	workspace-write	Rebuild a known generated artifact, run focused checks, and report the exact diff.
Maintenance fix window	workspace-write	Reproduce one bounded issue, make the smallest verified fix, and stop when acceptance checks pass.

A strong task states the goal, evidence to inspect, allowed changes, verification, and stopping condition. Avoid prompts such as “continue what we discussed” or “fix everything”: scheduled runs do not inherit the conversation that created them.

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🛡️ A schedule is not permission

Unattended coding needs a smaller trust boundary than an interactive chat. dsh-automation makes these constraints explicit:

• No inherited authority. A run receives no source-chat history, inbox, grant, or past approval.
• Two permission modes only. Rules may use read-only or workspace-write; unattended danger-full-access is not accepted.
• Fail closed. Each fresh Session uses approval policy never. A tool that still requires interactive approval fails instead of waiting forever or silently escalating.
• Exact workspace scope. Agent tools bind to the caller's canonical registered workspace; callers cannot supply an arbitrary target path.
• Explicit capability allowlist. The fresh Agent admits a small coding-tool set. Interactive questions, plans, goals, nested Agents, runtime plugin mounting, terminal/background jobs, recursive automation management, and unknown third-party tools are denied by an Agent-scoped final guard.
• Loopback Web control. The management RPC channel accepts loopback authority only.
• Traceable origin. The task enters the Session with source.kind = automation, plus the automation/run identity and scheduled time. It never impersonates a human message.
• No blind retries. Once an Agent may have produced side effects, the plugin does not automatically retry it.

These boundaries do not turn every third-party DSH tool into a sandbox. Foreground shell and network behavior still depends on the selected Agent preset, tool set, and DSH guards. Review a task with Run now before enabling unattended writes.

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🔧 Technical details

⏱️ Scheduling and recovery semantics

Situation	Behavior
Interval	Minimum five minutes; the first run occurs after one full interval, not immediately.
Daily / weekly	Evaluated at local HH:mm in an explicit IANA zone; nonexistent DST wall times are skipped rather than shifted.
Overlap	One active run per automation. A due occurrence is recorded as skipped(overlap) if its previous run is queued or running.
Host restarts late	Within the grace window (15 minutes by default), only the latest due occurrence can catch up. Older work is not replayed as a write backlog.
Run timeout	The Agent is cancelled after 60 minutes by default and the run is recorded as failed.
Host crash	Persisted queued or running records become failed(host_interrupted) on recovery; they are not secretly re-executed.
Retry	Manual Run now only. There is no automatic side-effect retry.

A deterministic occurrence key prevents the scheduler from dispatching the same recorded occurrence twice. This is an at-most-once dispatch policy, not a claim that external side effects are exactly once.

The DSH Host must be running for a task to start. Version 0.1 is not an operating-system daemon and does not coordinate multiple Hosts over one storage directory.

🏗️ Architecture

The product model is inspired by Codex Scheduled tasks, especially the distinction between returning to a chat and starting a standalone run. The implementation is native to DSH and Cordis; it does not copy Codex internals or patch DSH Core.

flowchart LR
  UI["Web control center"] --> Service["Automation service"]
  Tools["Agent-scoped tools"] --> Service
  Service --> Definitions["Durable definitions"]
  Clock["Cordis-owned clock"] --> Claim["Durable occurrence claim"]
  Definitions --> Clock
  Claim --> Executor["Run executor"]
  Executor --> Agent["Fresh root Agent + Session"]
  Agent --> Runs["Durable run history"]
  Runs --> Service

Layer	Owns	Does not own
Definition/run store	Durable facts and revision snapshots	Timers or Agents
Clock	Finding the next due occurrence	Prompts, permissions, or execution
Executor	One already-claimed fresh Agent run	Schedule mutation
Agent tools / Web RPC	Validated service calls	Tables, timers, or direct Agent construction
Web client	Native conversation.view presentation	Authoritative due state

Cordis disposal stops the clock, cancels plugin-owned live handles, removes tools/RPC/UI, and closes storage without inventing a successful run. The full rationale and data model are in the design document.

⚙️ Configuration

The included cordis.patch.yml uses conservative defaults:

Option	Default	Meaning
maxConcurrentRuns	2	Global execution capacity for this Host. Per-automation overlap is still disabled.
runTimeoutMinutes	60	Maximum wall-clock time for one fresh Agent run.
misfireGraceMinutes	15	How late the latest due occurrence may catch up after downtime.
historyLimit	200	Durable terminal-run retention per automation; active records are always kept.

Edit the plugin row in the deployment profile if you need different values. Increasing concurrency or timeout expands the amount of unattended work; treat those changes as policy decisions.

🚧 Current limits

Version 0.1 deliberately does not provide:

• same-chat heartbeats — use DSH Core Schedule;
• raw cron or arbitrary shell actions;
• unattended full access;
• automatic retry of a run that may have side effects;
• Git worktree creation or cleanup;
• multi-workspace targets, DAGs, or hidden cross-run memory;
• external email, SMS, or push delivery;
• a guarantee of exactly-once external side effects.

Only local execution is implemented. A stable DSH worktree lifecycle service should exist before a UI toggle claims worktree isolation.

🧪 Development

pnpm typecheck
pnpm test
pnpm build
# or all three
pnpm check

The package builds a Host ESM bundle and a Web client bundle for DSH's window.__ModuleLoader__ contract. Tests cover recurrence and DST behavior, durable-domain invariants, Agent capability guards, scheduler overlap/recovery/retention, and client schedule/localization helpers.

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📄 License

MIT. This is an independent community plugin for DeepSeek Harness. “Codex” is referenced only to describe the product pattern that informed the design.