marktantongco/opencode-accomplishments/context-compressor

Context Compressor

context

Compress long contexts preserving critical information. Uses hierarchical summarization, key entity extraction, and relevance scoring to fit essential context within token limits. This skill provides system-level capabilities that maintain agent state, ensure consistency, and optimize resource usage across sessions and projects.

instructions

Step 1: Assess System Needs

1. Identify the system operation required — memory, sync, compression, or role management
2. Determine scope — single session, multi-session, or cross-project
3. Map dependencies — what other systems or tools are involved
4. Establish operational parameters — retention, frequency, thresholds

Step 2: Execute System Operation

1. Initialize — Set up or load required state and configuration
2. Process — Execute the core operation with proper error handling
3. Validate — Verify the operation completed correctly
4. Report — Document what was done and any issues encountered

Step 3: Generate System Report

## System Operation Report
 
### Operation
Type of operation performed
 
### Input
What was processed
 
### Output
Results of the operation
 
### State Changes
-Change 1: before to after
-Change 2: before to after
 
### Issues Encountered
-Issue: resolution

Step 4: Verify System Health

• [ ] Operation completed without errors
• [ ] State is consistent and valid
• [ ] No resource leaks or orphaned data
• [ ] Logging and monitoring are active
• [ ] Backup/recovery procedures are in place

constraints

• NEVER modify system state without logging the change.
• NEVER assume operations succeed — always validate results.
• NEVER skip cleanup — system resources must be properly released.
• ALWAYS handle concurrent access and race conditions.
• ALWAYS maintain backward compatibility with existing state.

examples

Example: System Operation

Input: "Use when reducing context length while keeping essential information"

Output:

## System Operation Report
 
### Operation
Context Compressor executed successfully
 
### State Changes
-Configuration updated with new parameters
-State persisted to storage
 
### Verification
-All health checks passing
-No resource leaks detected