Dsh Godmode

An OpenCode V2 server plugin that anchors DeepSeek V4 Pro/Flash with DSH personas and model-specific tool routing.

What it does

The plugin registers the ctx.session.hook("context", ...) hook, which OpenCode V2 fires once per main-loop model step (title generation and compaction do not trigger it). For an event whose model id or provider string exactly contains deepseek-v4-pro or deepseek-v4-flash, it completely replaces event.system with a single system part holding the model's prompt.

The first model request exposes only OpenCode's shell tool. After promotion, Flash receives the complete host API tool record, while Pro follows anchored-standard and remains on the stable shell/edit/read/glob/execute resident set; other basic operations remain available through shell. execute retains on-demand discovery through search, including all connected MCP tools, without placing their full schemas in the Pro request. Pro keeps the verified hint When you thought, thought in ENGLISH and starts with 'we need'. Flash instead follows router-standard exactly: a zero-call keyword classifier routes the session's first user-role message to the spec, react, or weak persona, and only weak sessions receive the original depth-adaptive routing guide. The guide is reconstructed immediately after each user-role message in every outbound model context; it is never admitted to the session inbox, so it cannot wake the model or create an extra step. Pro receives the request-local discovery reminder <system_reminder>Tools: execute -> search({}) -> tools. Skills: cwd/.agents/skills, $HOME/.agents/skills.</system_reminder> only on the session's third model request; Flash never receives it. Neither Flash persona bans or penalizes Let me.

Prompt bases

Pro — from the DeepSeek Harness anchored-standard preset (dsh-anchored-standard/preset/agent.cordis.yml, persona row with complete: true):

You are a helpful software engineer assistant.
When you thought, thought in ENGLISH and starts with 'we need'

Flash — selected from the DeepSeek Harness router-standard personas by the first user-role message. Clear fix tasks use the spec persona, clear build tasks use the react persona, and unmatched or tied tasks use the weak-flash persona (dsh-router-standard/preset/router-core.mjs):

spec:
You are a helpful software engineer assistant.

react:
You are a hands-on software engineer who delivers working output fast.
Work directly: write or edit code, then verify it by reading and running. Keep the loop tight — produce, verify, fix — and do not build test harnesses, scaffolding, or ceremony the user did not ask for. Finish with a usable deliverable and a short summary.

weak:
You are a helpful assistant.
Before acting, decide the task type (build or fix) and adopt the matching style: build → hands-on production; fix → inspect-and-plan.
Before acting, briefly review what you have already done in this session and continue from where you left off; do not repeat completed steps. Do not run environment checks (echo, whoami, uname, node --version, date) or exhaustive grep/glob scans.

The Flash persona text remains verbatim. The Pro-only thinking hint is not appended, and Let me is not treated as a quality failure.

Matching rule

A token exactly occurs when it is bounded on both sides by a non-alphanumeric character or the string edge (case-insensitive). This means:

model id	matches
deepseek-v4-pro	✅ Pro
deepseek-v4-flash	✅ Flash
deepseek-v4-pro-260425	✅ Pro (a - is a boundary, so a version suffix is the same family)
deepseek-v4-flash-260425	✅ Flash
deepseek-v4-prototype	❌ no — pro is immediately followed by totype, so the token is only a prefix of a longer name
deepseek-v4-flasher	❌ no (same reason)
gpt-4o, claude-sonnet-4, deepseek-v3	❌ no

The check runs against both event.model.id and event.model.providerID.

Install

Add the npm package to the plugins array in your opencode.json or global OpenCode configuration:

{
  "plugins": [
    "opencode-dsh-godmode@0.1.3"
  ]
}

OpenCode installs package plugins and their production dependencies in its isolated cache. This package has no runtime dependencies.

For local development, reference the checked-out entry file with an absolute path or a path relative to the configuration file:

{
  "plugins": ["./opencode-dsh-godmode/src/index.ts"]
}

Run the tests

cd opencode-dsh-godmode
npm test            # node --test test/index.test.mjs

The unit tests use only Node's built-in test runner and assert module. They verify exact personas and routing guidance, zero-call task classification, deterministic request-local guidance placement, absence of guidance without a user-role message, first-request shell bootstrap, Pro's resident tool set, Flash's post-bootstrap full catalog, the request-local third-request reminder, model matching, and non-target isolation.

License & sources

MIT. See LICENSE and NOTICE. The two prompts are reproduced from DeepSeek Harness sources that are themselves MIT-licensed (dsh-anchored-standard and dsh-router-standard); attribution is in NOTICE.