Long Running Pack
- Updated July 30, 2026
- s-hiraoku/claude-harnesses
long-running-pack helps agents survive context loss across sessions, with SessionStart context injection, a cost-ceiling guard, a large-edit gate, ledger templates and a goal-manager workflow. Developers use it to keep long-running autonomous agents on track and within budget.
Key points
- SessionStart context injection
- Cost-ceiling guard
- Goal-manager workflow
Long Running Pack by the numbers
- Data as of Jul 31, 2026 (Skillselion catalog sync)
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| Last updated | July 30, 2026 |
|---|---|
| Repository | s-hiraoku/claude-harnesses ↗ |
What it does
Helps agents survive context loss across sessions via SessionStart context injection, cost-ceiling guard, large-edit gate and ledger templates.
README.md
long-running-pack
Survive context loss across sessions and protect against runaway loops.
Components
| Hook | Event | Purpose |
|---|---|---|
session-context-injector |
SessionStart | Inject git status and ledger head into the new session's context. |
cost-ceiling-guard |
PreToolUse | Cap cumulative tool calls per 24h window (default 5000). |
plan-required-on-large-change |
PreToolUse Edit/Write/MultiEdit | Block edits exceeding 4000 bytes; ask the user to break them up or set CLAUDE_HARNESSES_LARGE_EDIT_OK=1. |
session-end-summary |
SessionEnd | Append a session-end marker to the ledger. |
| Skill | Purpose |
|---|---|
goal-manager |
Track durable objectives in ledger/current.md. |
long-running-orchestrator |
Coordinate ledger + checkpoints + cost guard for multi-session work. |
feature-implementation, bug-fix, refactor-safely, release-check, docs-updater, deslop |
Reusable workflows already useful in long-running sessions. |
| Command | Effect |
|---|---|
/checkpoint |
Append a timestamped checkpoint to ledger/current.md. |
Install
claude /plugin install long-running-pack@claude-harnesses
Tunables
| Env var | Default | Effect |
|---|---|---|
CLAUDE_HARNESSES_COST_CEILING |
5000 | Tool calls per 24h before forced stop. |
CLAUDE_HARNESSES_COST_PATH |
~/.claude-harnesses/cost-ledger.json |
Override ledger location. |
CLAUDE_HARNESSES_LARGE_EDIT_BYTES |
4000 | Per-edit byte threshold. |
CLAUDE_HARNESSES_LARGE_EDIT_OK |
unset | Set to 1 to bypass the large-edit gate for one session. |
CLAUDE_HARNESSES_DISABLE |
unset | Global kill switch for every hook in the pack. |
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