Developer Releases Mod to Prevent Claude Code Usage Window Burnout
A developer released agent-usage-guard, a modification for Anthropic's Claude Code that prevents rapid consumption of the five-hour usage window. The tool monitors live plan usage and restricts subagent fan-out and heavy-context churn before costs accumulate. It operates locally without network calls, storing only coarse usage buckets. If limits are hit, it prompts the user or instructs the model to batch work, ensuring the end of the usage window remains available for manual tasks.
Key points
- A developer created agent-usage-guard, a modification for Claude Code designed to stop the tool from exhausting its five-hour usage window in minutes.
- The mod monitors live plan usage percentages and caps subagent fan-out and heavy-context churn across all local sessions, regardless of current usage levels.
- It functions as a pre-emptive guard, intercepting actions before prompts or tool calls execute, and prompts users via Claude Code's native dialog when limits are approached.
- The tool is privacy-minimal and local, requiring no network connections and storing only coarse usage buckets rather than prompt text or model outputs.
- If the guard fails, it defaults to a 'fail-open' state, allowing events to proceed to prevent blocking the user's workflow.
- When an approval is granted, it remains active until the condition clears or times out, preventing repetitive prompts for the same action.
A new modification for Anthropic's Claude Code has been released to address the rapid consumption of usage limits. The tool, named agent-usage-guard, operates within the Claude Code environment to monitor live plan usage and prevent the five-hour usage window from being exhausted quickly. It specifically targets runaway spending caused by subagent fan-out, heavy-context churn, and retry loops.
The mod functions by acting before costs are incurred, intercepting actions before prompts are sent or tool calls are executed. It maintains limits across all local sessions and caps resource-intensive tasks at any usage level, not just when nearing the limit. When a threshold is reached, the guard prompts the user through Claude Code's native question dialog. If no user is available to respond, the tool instructs the model to wait, batch work, or stop, explaining the reason for the pause.
Designed for privacy and minimal footprint, agent-usage-guard runs locally without network dependencies. It stores only coarse usage buckets and counts, avoiding the storage of prompt text, tool inputs, or model outputs. The system is plan-aware, reading the five-hour and weekly percentages reported by Claude Code to preserve the end of the window for manual work. If a hook fails, the system fails open, allowing the event to proceed to avoid blocking the workflow. A command, /agent-guard report, provides a log of the guard's actions.
Sources
The WireByte editorial team synthesises technology news from multiple primary sources, verifies the facts, and links every source. Articles are produced with AI assistance and reviewed under our editorial policy.
