Spawn
- 1.4k installs
- 23.5k repo stars
- Updated July 17, 2026
- alirezarezvani/claude-skills
spawn is an agent skill that Launch N parallel subagents in isolated git worktrees to compete on the session task.
About
Launch N parallel subagents in isolated git worktrees to compete on the session task. --- name: "spawn" description: "Launch N parallel subagents in isolated git worktrees to compete on the session task." command: /hub:spawn --- # /hub:spawn - Launch Parallel Agents Spawn N subagents that work on the same task in parallel, each in an isolated git worktree. ## Usage ``` /hub:spawn # Spawn agents for the latest session /hub:spawn 20260317-143022 # Spawn agents for a specific session /hub:spawn --template optimizer # Use optimizer template for dispatch prompts /hub:spawn --template refactorer # Use refactorer template ``` ## Templates When `--template <name>` is provided, use the dispatch prompt from `references/agent-templates.md` instead of the default prompt below. Available templates: | Template | Pattern | Use Case | |----------|---------|----------| | `optimizer` | Edit → eval → keep/discard → repeat x10 | Performance, latency, size reduction | | `refactorer` | Restructure → test → iterate until green | Code quality, tech debt | | `test-writer` | Write tests → measure coverage → repeat | Test coverage gaps | | `bug-fixer` | Reproduce → diagnose → fix → verify | Bug fix with c.
- /hub:spawn - Launch Parallel Agents
- Load session config from `.agenthub/sessions/{session-id}/config.yaml`
- Write task assignment to `.agenthub/board/dispatch/`
- Build agent prompt with task, constraints, and board write instructions
- Launch ALL agents in a **single message** with multiple Agent tool calls:
Spawn by the numbers
- 1,424 all-time installs (skills.sh)
- +2 installs in the week ending Jul 29, 2026 (Skillselion tracking)
- Ranked #481 of 2,159 Testing & QA skills by installs in the Skillselion catalog
- Security screen: LOW risk (skills.sh audit)
- Data as of Jul 31, 2026 (Skillselion catalog sync)
spawn capabilities & compatibility
- Capabilities
- /hub:spawn — launch parallel agents · load session config from `.agenthub/sessions/{se · write task assignment to `.agenthub/board/dispat · build agent prompt with task, constraints, and b · launch all agents in a **single message** with m
- Use cases
- documentation
What spawn says it does
Assign each agent a **different strategy** appropriate to the template and task — diverse strategies maximize the value of parallel exploration.
Load session config from `.agenthub/sessions/{session-id}/config.yaml` 2.
For each agent 1..N: - Write task assignment to `.agenthub/board/dispatch/` - Build agent prompt with task, constraints, and board write instructions 3.
Launch ALL agents in a **single message** with multiple Agent tool calls: ``` Agent( prompt: "You are agent-{i} in hub session {session-id}.
npx skills add https://github.com/alirezarezvani/claude-skills --skill spawnAdd your badge
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| Installs | 1.4k |
|---|---|
| repo stars | ★ 23.5k |
| Security audit | 3 / 3 scanners passed |
| Last updated | July 17, 2026 |
| Repository | alirezarezvani/claude-skills ↗ |
What problem does spawn solve for developers using this skill?
Launch N parallel subagents in isolated git worktrees to compete on the session task.
Who is it for?
Developers who need spawn patterns described in the cached skill documentation.
Skip if: Skip when docs are empty or the task is outside the skill's documented scope.
When should I use this skill?
Launch N parallel subagents in isolated git worktrees to compete on the session task.
What you get
Actionable workflows and conventions from SKILL.md for spawn.
- isolated worktree branches
- parallel agent implementations
Files
../../../engineering/agenthub/skills/spawn/SKILL.md
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Pick spawn over a single-agent session when you need competing implementations isolated in separate worktrees rather than sequential retries.
FAQ
What does spawn do?
Launch N parallel subagents in isolated git worktrees to compete on the session task.
When should I use spawn?
Launch N parallel subagents in isolated git worktrees to compete on the session task.
Is spawn safe to install?
Review the Security Audits panel on this page before installing in production.