HA Orchestrator

HA Orchestrator is a plugin for DeepSeek Harness (dsh):

• When a model call fails mid-run, it retries on a backup model and the run continues.
• It adds an orchestrate tool that the model calls on its own when a task suits it, splitting work across subagents in parallel (fanout), in stages (pipeline), or with a review pass (supervisor).

The settings page also lets you define custom subagents (or generate one with AI), and the UI and prompt copy are available in Chinese and English, following your DSH language.

简体中文

What it does

Failover when a model fails

• When a model request errors, it is retried on the next backup model. Backups are tried in order.
• The failed model is temporarily skipped and cools down; it comes back on its own when the cooldown expires.
• Each failure episode has a retry budget. Once it is spent, the plugin stops retrying instead of looping forever.
• If a model error interrupts the run, the plugin restarts the task once so the work is not lost.

Backup models, cooldown, failure threshold, and error-code filter are configurable in Settings → "HA 与编排".

Orchestration, triggered automatically

The orchestrate tool is available in every session. Its description and a hint in the system prompt tell the model to call it on its own when a task has parallel parts, runs in stages, or needs a review pass:

• fanout — split the task, run subtasks in parallel, merge the results.
• pipeline — run stages one after another; each stage's output feeds the next.
• supervisor — run subtasks in parallel, then let a supervising subagent review and merge them.

If a particular run does not orchestrate on its own, just say "use orchestration".

Note: if the current session uses a complete: true persona preset such as minimal / minimal-v3, the platform intentionally drops plugin system-prompt sections; auto-triggering then relies on the orchestrate tool description alone. The plugin now includes "read a large project" in that description, but if it still does not trigger, just say "use orchestration".

You can also turn off the auto-triggering: in Settings → "HA 与编排" → System card, turn off context injection. The model then only orchestrates when you ask for it, for example "use the dsh-ha-orchestrator plugin".

Custom subagents

Define reusable subagents in the settings page: name, provider/model, description, and system prompt. Tasks pick them by name, and the model can look up the list at any time. The "AI Generate" button takes a one-sentence requirement and has the current model fill in the full definition.

Languages

The settings UI and all prompt copy come in Chinese and English. The plugin follows your DSH language selection and falls back to Chinese if a language pack fails to load. You can also pin a language in the "System" card.

Installation

Requirements: DeepSeek Harness with the web profile. No build step, no runtime dependencies.

Method 1: install from npm (recommended)

The package is published on npm as dsh-ha-orchestrator:

1. Run the one-command install:

   dsh plugin --profile web add dsh-ha-orchestrator
   

2. Because this package declares dsh.bundle.patch, dsh plugin add automatically adds dsh-ha-orchestrator to dsh.profile.bundles and applies cordis.patch.yml. No manual composition line is needed.

3. No restart needed: the bundle-patch layer is hot-reloaded (Cordis HMR), so the plugin activates in the running process. Refresh the browser page to load the settings UI. The plugin also loads at startup and survives restarts.

Method 2: install from a local checkout (development)

For development or testing an unreleased version. Requires pnpm on PATH:

1. Run the one-command install:

   dsh plugin --profile web add "file:<absolute-path-to-this-repo>"
   

2. Because this package declares dsh.bundle.patch, dsh plugin add automatically adds dsh-ha-orchestrator to dsh.profile.bundles and applies cordis.patch.yml. No manual composition line is needed.

3. No restart needed: the bundle-patch layer is hot-reloaded (Cordis HMR), so the plugin activates in the running process. Refresh the browser page to load the settings UI. The plugin also loads at startup and survives restarts.

Method 3: manual install (no pnpm)

1. Clone/copy this repo into your DSH profile: ~/.dsh/profiles/web/node_modules/dsh-ha-orchestrator

2. Add it to the composition file ~/.dsh/profiles/web/cordis.patch.yml:

   - insert:
       - id: dsh-ha-orchestrator
         name: dsh-ha-orchestrator
   

3. No restart needed: the profile patch layer is hot-reloaded (Cordis HMR), so the plugin activates in the running process. Refresh the browser page to load the settings UI. The plugin also loads at startup and survives restarts.

Version note: v0.1.0 was the previous dynamic build, deployed per session via cordis_define and released only for feature preview. Starting with v0.2.0 the plugin is static and loads with DSH at startup. From the version that introduces the bundle patch, Method 1 (one-command install) is recommended.

Usage

No special instructions are required for normal use — the model decides when to orchestrate:

You:    Research these three open-source projects, compare licenses and community activity, and recommend one.
Model:  sees 3 independent subtasks → calls orchestrate (fanout) → parallel research → comparison → recommendation

You:    Read this large project and summarize its architecture and current progress.
Model:  splits it into independent per-module/doc/code reading tasks → calls orchestrate (fanout) → parallel reads → consolidated architecture and progress

You:    Do requirements analysis first, then a design doc, then an implementation plan.
Model:  calls orchestrate (pipeline) → each stage's output feeds the next

You:    Write a competitive analysis report and have a senior reviewer vet it.
Model:  calls orchestrate (supervisor) → parallel analysis → review and merge → report

Commands

The plugin also registers two optional slash commands for inspecting and managing runtime state:

Command	Description
/ha	Show the current HA status (same as /ha status).
/ha status	Show quarantine, failure counts, rotation cursors, switch history, and probe log.
/ha diag	Show plugin diagnostics: service availability, persistence, language, and injection status.
/ha reset	Clear quarantine, failure counts, cursors, and history.
/ha probe <provider> <model>	Manually probe a model to verify recovery.
/orchestrate	List recent orchestrate runs (same as /orchestrate runs).
/orchestrate runs	List the 10 most recent orchestrate runs.
/orchestrate show <runId>	Show details of a specific orchestrate run.
/orchestrate presets	List configured orchestration presets.

These commands are registered through the DSH commands service. If a deployment does not provide that service, the plugin still works normally; only these slash commands are unavailable.

Settings

Settings → "HA 与编排":

Card	What you can do
Model High Availability	On/off, backup list (+ "Recommended backups"), and an "Advanced" section for cooldown, failure threshold, burst window, provider circuit threshold, probe recovery, context-overflow degrade, error-code filter, persist selection, and stop steering
Subagent Orchestration	On/off, subagent provider, default concurrency, max subagents per run, global concurrency cap, pipeline stage retry
Custom Subagents	Add, edit, reorder, delete; "AI Generate" creates one from a description
Diagnostics	HA runtime (current default, quarantine with level, failure counts, cursors, probes, failover history, reset) and recent orchestrate runs
System	Plugin language (follow system / Chinese / English), the orchestration hint toggle, the live injection status, one-click config export/import, and the debug card toggle

Documentation

• Architecture — modules, data flows, service contract
• Configuration — every config key with defaults and clamping rules
• Security — trust boundary and applied hardening
• Verification & release — test matrix, gates, release steps
• Compatibility — verified DSH snapshots and peer strategy

Notes

• Config is written to the first writable location among the current session workspace / DSH_HOME, the sandbox workspace-write writable root, and the fs default cwd (file dsh-ha-orchestrator.config.json, backup dsh-ha-orchestrator.config.backup.json), and looked up in the same order and restored on startup.
• HA runtime state (quarantine, failure counters, rotation cursors, switch history) is persisted to dsh-ha-orchestrator.ha.json (debounced) and restored on startup; orchestrate runs are recorded to dsh-ha-orchestrator.runs.jsonl.
• All /ha and /orchestrate slash commands are listed in the Commands section above.

License

MIT © Saktawdi