Command Code inside OpenCode — Go-plan ($1) browser login,
gateway proxy, free Laguna S 2.1, tools/MCP, attachments, compact, usage.

Install · Authenticate · Why this plugin · Architecture · Changelog

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Run Command Code models from OpenCode by proxying the same gateway that npm i -g command-code@latest uses (POST /alpha/generate). Default and exclusive live-test target: Laguna S 2.1 free (poolside/laguna-s-2.1-free, 256k context, $0).

Plugin shape mirrors @otto-assistant/opencode-claude and @otto-assistant/opencode-cursor.

Install

command-code is not a built-in OpenCode provider. Install the plugin first, or opencode auth login --provider command-code fails with Unknown provider "command-code".

# global (recommended)
opencode plugin @otto-assistant/opencode-commandcode -g

# or project-local (writes .opencode/opencode.json)
opencode plugin @otto-assistant/opencode-commandcode

Optional provider naming (also seeded when the plugin loads):

{
  "$schema": "https://opencode.ai/config.json",
  "plugin": ["@otto-assistant/opencode-commandcode"],
  "provider": {
    "command-code": { "name": "Command Code" }
  }
}

Or build from source:

git clone https://github.com/otto-assistant/opencode-commandcode.git
cd opencode-commandcode
bun install && bun run build
opencode plugin file://$PWD

Authenticate

Requires the plugin to be installed (see above). Preferred: Command Code Go plan ($1/mo) browser login — same as cmd login (open URL → Authorize → paste the key Studio shows).

# Option A — sync from Command Code CLI (recommended)
npm i -g command-code@latest
cmd login   # browser → Studio CLI auth (Go plan)
opencode auth login --provider command-code
# pick "Use existing cmd login session"

# Option B — browser login inside OpenCode (Go $1)
opencode auth login --provider command-code
# pick "Login with Command Code (Go $1)"
# open the URL, Authorize, then paste the API key (or ok if the browser already finished)

Then start OpenCode, pick provider command-code, and choose any model from the live catalog (cmd --list-models). Laguna S 2.1 free is the default when available:

opencode run "Summarise this repository in five bullets." --model command-code/laguna-s-2.1-free

Laguna S 2.1 free requires an active Go (or higher) account with credits on file; requests on that model still bill $0.

Why this plugin

Gateway proxy	Talks to api.commandcode.ai/alpha/generate — same transport as the cmd CLI (mode=agent).
Live model catalog	Discovered from cmd --list-models (enriched by the installed CLI’s models.md) — not hardcoded.
Laguna S 2.1 free	Default when present — 256k context, $0 while the deal lasts.
Auth options	Go-plan browser login (URL → paste key, same as cmd login) or sync an existing CLI session.
Agent-grade tools	OpenCode tool calls park and resume; MCP-prefixed tools are tracked separately.
Attachments	Images, PDFs, text/binary files from OpenCode. Text-only models get image placeholders (Command Code behavior).
Auto-compact	Context-fraction tips + tiered client compact before the 256k window overflows.
Usage	Per-turn and session totals via SSE usage + GET /v1/usage.

Architecture

OpenCode
  └─ /v1/chat/completions
       └─ Bun.serve proxy (dynamic port, prefer 8797)
            └─ POST https://api.commandcode.ai/alpha/generate
                 └─ poolside/laguna-s-2.1-free (default)

Model catalog: live from cmd --list-models, with context, reasoning efforts, and the installed CLI's own text-only/vision registry. Each upstream model appears exactly once in OpenCode; request aliases like laguna / laguna-s-2.1-free still resolve to poolside/laguna-s-2.1-free. Auth credentials are mirrored between OpenCode auth.json and ~/.commandcode/auth.json.

Requirements

• OpenCode
• Command Code CLI (npm i -g command-code@latest) and a Go-plan account
• Bun (plugin runtime) · Node.js ≥ 18 (CLI needs ≥ 22)

Development

bun install
bun run build
bun run test          # mocked gateway — attachments, tools, compact, usage
bun run test:live     # live Laguna S 2.1 (needs `cmd login` / Go plan session)

Debug logging: OPENCODE_COMMANDCODE_DEBUG=1.

Optional knobs:

• OPENCODE_COMMANDCODE_PROXY_PORT — pin a fixed local proxy port (otherwise dynamic: prefer 8797, then scan upward / ephemeral)
• OPENCODE_COMMANDCODE_CWD — working directory reported to the gateway
• COMMANDCODE_API_URL / OPENCODE_COMMANDCODE_API_URL — override API base (default https://api.commandcode.ai)

Release

Publish via GitHub Actions → Actions → Release → Run workflow:

Input	Purpose
version	Explicit semver (0.2.0). Empty → use bump
bump	minor (default) / patch / major
dry_run	Skip npm publish; create a draft GitHub release

Requires repo secrets: NPM_TOKEN, optional DISCORD_WEBHOOK_URL.

Local pin refresh after a release:

./scripts/update-plugin.sh

FAQ

Do I need a Studio API key?
No. Use Go-plan browser login or sync from cmd login. After you Authorize in the browser, Studio may show a one-time key to paste into the OpenCode prompt — that key is part of the login flow, not a separate product API key.

Are only Laguna models available?
No. The plugin loads the full live catalog from cmd --list-models. Laguna is just the default free model used for testing.

Why isn’t Command Code listed without the plugin?
OpenCode doesn’t ship Command Code as a built-in provider; this plugin registers it.

Where are releases?
GitHub Releases · npm · Changelog

License

MIT