dingminhua/dsh-subagent-default-model#plugin

Default model for subagent delegations in DeepSeek Harness (DSH), configurable via ~/.dsh/settings.yaml.

When a subagent is created without an explicit model, this plugin injects the configured default — so every subagent, subagent_fork, and any tool that omits agentOptions routes through it. Explicit per-call overrides always win; an absent or incomplete settings section keeps the historical behavior (children inherit the parent route).

Features

• Single model — all subagents run on one configured model.
• Multi-model — a models list with round-robin or random strategy spreads parallel subagents across models.
• Hot-reload — settings changes apply to the very next delegation.
• Clean teardown — Cordis disposal restores the original service methods.

Install

dsh plugin --profile web add dsh-subagent-default-model

Configuration

Add to ~/.dsh/settings.yaml:

# Single model
subagent-default-model:
  provider: deepseek-official
  model: deepseek-v4-pro

# Or multiple models
subagent-default-model:
  provider: deepseek-official
  models:
    - deepseek-v4-pro
    - deepseek-v4-flash
  strategy: round-robin  # round-robin | random

Field	Type	Default	Description
provider	string	—	Provider for string-type model entries.
model	string	—	Single model id (backward compatible).
models	array	[]	List of model entries (string or {provider, model} pair).
strategy	string	round-robin	Selection strategy: round-robin or random.

How it works

Explicit agentOptions on the request
  → subagent-default-model settings
  → inherit parent session route

The plugin wraps the host ctx.subagents service (start / startContinuable), so it covers every delegation path — built-in subagent / subagent_fork tools and any custom tool that calls the service without providing agentOptions.

License

MIT