description: Context system manager - harvest summaries, extract knowledge, organize context tags:

context
knowledge-management
harvest dependencies:
subagent:context-organizer
subagent:contextscout ---

Context Manager

Files MUST be <200 lines. Extract core concepts only (1-3 sentences), 3-5 key points, minimal example, reference link.

ALWAYS present approval UI before deleting/archiving files. Letter-based selection (A B C or 'all'). NEVER auto-delete.

ALWAYS organize by function: concepts/, examples/, guides/, lookup/, errors/ (not flat files).

ALWAYS read required context files from .opencode/context/core/context-system/ BEFORE executing operations.

- Files <200 lines (@critical_rules.mvi_strict)
- Show approval before cleanup (@critical_rules.approval_gate)
- Function-based structure (@critical_rules.function_structure)
- Load context before operations (@critical_rules.lazy_load)

- Harvest (default), Extract, Organize, Update workflows

- Cross-references, validation, navigation

Tier 1 always overrides Tier 2/3.

Arguments: $ARGUMENTS

Default Behavior (No Arguments)

When invoked without arguments: /context

Scan workspace for summary files:
- *OVERVIEW.md, *SUMMARY.md, SESSION-*.md, CONTEXT-*.md
- Files in .tmp/ directory
- Files >2KB in root directory

Show what was found:
```
Quick scan results:

Found 3 summary files:
  📄 CONTEXT-SYSTEM-OVERVIEW.md (4.2 KB)
  📄 SESSION-auth-work.md (1.8 KB)
  📄 .tmp/NOTES.md (800 bytes)

Recommended action:
  /context harvest  - Clean up summaries → permanent context

Other options:
  /context extract {source}  - Extract from docs/code
  /context organize {category}  - Restructure existing files
  /context help  - Show all operations
```

Purpose: Quick tidy-up. Default assumes you want to harvest summaries and compact workspace.

Operations

Primary: Harvest & Compact (Default Focus)

/context harvest [path] ⭐ Most Common

Extract knowledge from AI summaries → permanent context
Clean workspace (archive/delete summaries)
Reads: operations/harvest.md + standards/mvi.md

/context compact {file}

Minimize verbose file to MVI format
Reads: guides/compact.md + standards/mvi.md

Secondary: Custom Context Creation

/context extract from {source}

Extract context from docs/code/URLs
Reads: operations/extract.md + standards/mvi.md + guides/compact.md

/context organize {category}

Restructure flat files → function-based folders
Reads: operations/organize.md + standards/structure.md

/context update for {topic}

Update context when APIs/frameworks change
Reads: operations/update.md + guides/workflows.md

/context error for {error}

Add recurring error to knowledge base
Reads: operations/error.md + standards/templates.md

/context create {category}

Create new context category with structure
Reads: guides/creation.md + standards/structure.md + standards/templates.md

Migration

/context migrate

Copy project-intelligence from global (~/.config/opencode/context/) to local (.opencode/context/)
For users who installed globally but want project-specific, git-committed context
Shows diff if local files already exist, asks before overwriting
Optionally cleans up global project-intelligence after migration
Reads: standards/mvi.md

Utility Operations

/context map [category]

View current context structure, file counts

/context validate

Check integrity, references, file sizes

/context help

Show all operations with examples

Lazy Loading Strategy

Read: operations/harvest.md, standards/mvi.md

Read: operations/harvest.md, standards/mvi.md, guides/workflows.md

Read: guides/compact.md, standards/mvi.md

Read: operations/extract.md, standards/mvi.md, guides/compact.md, guides/workflows.md

Read: operations/organize.md, standards/structure.md, guides/workflows.md

Read: operations/update.md, guides/workflows.md, standards/mvi.md

Read: operations/error.md, standards/templates.md, guides/workflows.md

Read: guides/creation.md, standards/structure.md, standards/templates.md

Read: standards/mvi.md

All files located in: .opencode/context/core/context-system/

Subagent Routing

Pass: operation name, arguments, lazy load map
Subagent loads: Required context files from .opencode/context/core/context-system/
Subagent executes: Multi-stage workflow per operation

Pass: operation name, arguments
Subagent executes: Read-only analysis and reporting

Quick Reference

Structure

.opencode/context/core/context-system/
├── operations/     # How to do things (harvest, extract, organize, update)
├── standards/      # What to follow (mvi, structure, templates)
└── guides/         # Step-by-step (workflows, compact, creation)

MVI Principle (Quick)

Core concept: 1-3 sentences
Key points: 3-5 bullets
Minimal example: <10 lines
Reference link: to full docs
File size: <200 lines

Function-Based Structure (Quick)

{category}/
├── navigation.md       # Navigation
├── concepts/       # What it is
├── examples/       # Working code
├── guides/         # How to
├── lookup/         # Quick reference
└── errors/         # Common issues

Examples

Default (Quick Scan)

/context
# Scans workspace, suggests harvest if summaries found

Harvest Summaries

/context harvest
/context harvest .tmp/
/context harvest OVERVIEW.md

Extract from Docs

/context extract from docs/api.md
/context extract from https://react.dev/hooks

Organize Existing

/context organize development/
/context organize development/ --dry-run

Update for Changes

/context update for Next.js 15
/context update for React 19 breaking changes

Migrate Global to Local

/context migrate
# Copies project-intelligence from ~/.config/opencode/context/ to .opencode/context/
# Shows what will be copied, asks for approval before proceeding

Success Criteria

After any operation:

All files <200 lines? (@critical_rules.mvi_strict)
Function-based structure used? (@critical_rules.function_structure)
Approval UI shown for destructive ops? (@critical_rules.approval_gate)
Required context loaded? (@critical_rules.lazy_load)
navigation.md updated?
Files scannable in <30 seconds?

Full Documentation

Context System Location: .opencode/context/core/context-system/

Structure:

operations/ - Detailed operation workflows
standards/ - MVI, structure, templates
guides/ - Interactive examples, creation standards

Read before using: standards/mvi.md (understand Minimal Viable Information principle)

context.md 8.2 KB History Raw