micode

OpenCode plugin with structured Brainstorm → Plan → Implement workflow and session continuity.

https://github.com/user-attachments/assets/85236ad3-e78a-4ff7-a840-620f6ea2f512

Quick Start

Add to ~/.config/opencode/opencode.json:

{ "plugin": ["micode"] }

Then run /init to generate ARCHITECTURE.md and CODE_STYLE.md.

Workflow

Brainstorm → Plan → Implement
     ↓         ↓        ↓
  research  research  executor

Brainstorm

Refine ideas into designs through collaborative questioning. Fires research subagents in parallel. Output: thoughts/shared/designs/YYYY-MM-DD-{topic}-design.md

Plan

Transform designs into implementation plans with bite-sized tasks (2-5 min each), exact file paths, and TDD workflow. Output: thoughts/shared/plans/YYYY-MM-DD-{topic}.md

Implement

Execute in git worktree for isolation. The Executor orchestrates implementer→reviewer cycles with parallel execution via fire-and-check pattern.

Session Continuity

Maintain context across sessions with structured compaction. Run /ledger to create/update thoughts/ledgers/CONTINUITY_{session}.md.

Commands

| Command | Description | |---------|-------------| | /init | Initialize project docs | | /ledger | Create/update continuity ledger | | /search | Search past plans and ledgers |

Agents

| Agent | Purpose | |-------|---------| | commander | Orchestrator | | brainstormer | Design exploration | | planner | Implementation plans | | executor | Orchestrate implement→review | | implementer | Execute tasks | | reviewer | Check correctness | | codebase-locator | Find file locations | | codebase-analyzer | Deep code analysis | | pattern-finder | Find existing patterns | | project-initializer | Generate project docs | | ledger-creator | Continuity ledgers | | artifact-searcher | Search past work |

Tools

| Tool | Description | |------|-------------| | ast_grep_search | AST-aware code pattern search | | ast_grep_replace | AST-aware code pattern replacement | | look_at | Extract file structure | | artifact_search | Search past plans/ledgers | | btca_ask | Query library source code | | pty_spawn | Start background terminal session | | pty_write | Send input to PTY | | pty_read | Read PTY output | | pty_list | List PTY sessions | | pty_kill | Terminate PTY |

Hooks

• Think Mode - Keywords like "think hard" enable 32k token thinking budget
• Ledger Loader - Injects continuity ledger into system prompt
• Auto-Compact - At 50% context usage, automatically summarizes session to reduce context
• File Ops Tracker - Tracks read/write/edit for deterministic logging
• Artifact Auto-Index - Indexes artifacts in thoughts/ directories
• Context Injector - Injects ARCHITECTURE.md, CODE_STYLE.md
• Token-Aware Truncation - Truncates large tool outputs

Configuration

Model Configuration

micode reads your default model from opencode.json:

{
  "model": "github-copilot/gpt-5-mini",
  "plugin": ["micode"]
}

All micode agents will use this model automatically.

micode.json

Create ~/.config/opencode/micode.json for micode-specific settings:

{
  "agents": {
    "brainstormer": { "model": "openai/gpt-4o", "temperature": 0.8 },
    "commander": { "maxTokens": 8192 }
  },
  "features": {
    "mindmodelInjection": true
  },
  "compactionThreshold": 0.5,
  "fragments": {
    "commander": ["custom-instructions.md"]
  }
}

Options

| Option | Type | Description | |--------|------|-------------| | agents | object | Per-agent overrides (model, temperature, maxTokens) | | features.mindmodelInjection | boolean | Enable mindmodel context injection | | compactionThreshold | number | Context usage threshold (0-1) for auto-compaction. Default: 0.5 | | fragments | object | Additional prompt fragments per agent |

Model Resolution Priority

1. Per-agent override in micode.json (highest)
2. Default model from opencode.json "model" field
3. Plugin default (fallback)

Model Syntax

Models use provider/model format. The provider must match exactly what's in your opencode.json:

{
  "provider": {
    "github-copilot": {
      "models": { "gpt-5-mini": {} }
    }
  }
}

Use "model": "github-copilot/gpt-5-mini" (not github/copilot:gpt-5-mini).

Development

git clone [email protected]:vtemian/micode.git ~/.micode
cd ~/.micode && bun install && bun run build

// Use local path
{ "plugin": ["~/.micode"] }

Release

npm version patch  # or minor, major
git push --follow-tags

Philosophy

1. Brainstorm first - Refine ideas before coding
2. Research before implementing - Understand the codebase
3. Plan with human buy-in - Get approval before coding
4. Parallel investigation - Spawn multiple subagents
5. Isolated implementation - Use git worktrees
6. Continuous verification - Implementer + Reviewer per task
7. Session continuity - Never lose context

Inspiration

• oh-my-opencode - Plugin architecture
• HumanLayer ACE-FCA - Structured workflows
• Factory.ai - Structured compaction research