context-budget-guard（上下文预算卫士）

Context Budget Guard

State file: ~/.openclaw/skill-state/context-budget-guard/state.yaml

Don't wait for the model to go incoherent. Act at 70%, not 95%.

When to Use

• At the start of any long-running session (>30 min expected)
• Before each major task step in a multi-hour workflow
• When long-running-task-management advances to a new stage

The Process

Step 1: Initialize (Session Start)

Write to state: session_start timestamp, compaction_count: 0, status: monitoring, threshold_pct: 70.

Step 2: Check Budget (Before Each Major Step)

Estimate current context usage as a rough percentage:

• Low (<50%) — continue normally
• Medium (50–70%) — note in state, proceed with caution (avoid loading large files)
• High (>70%) — trigger context-window-management NOW, before continuing

To estimate: count approximate tokens from recent messages, loaded file contents, and active task context.

Step 3: After Compaction

• Increment compaction_count in state
• Write last_compacted_at, strategy_used (passed from context-window-management)
• Reset mental estimate to ~20% (post-compaction baseline)

Step 4: Session End

Update state: status: idle, session_end timestamp.

Key Principles

• The 70% threshold is the trigger — earlier is always better than later
• Check budget BEFORE loading large files or running subagents, not after
• If in doubt: compact. A clean context costs less than a confused one.
• Works best paired with long-running-task-management — check budget at every checkpoint