Vspawn
vlinx-io/VelaTerm
Explicitly spawn a standalone child session under the current vlx-term session, passing the task in as its first message (mirrors spawntask).
Launch N parallel subagents in isolated git worktrees to compete on the session task.
Install Spawn
$ npx skills add alirezarezvani/claude-skills --skill spawn -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install alirezarezvani/claude-skills spawn --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/engineering/agenthub/skills/spawn .claude/skills/spawn && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "spawn" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/engineering/agenthub/skills/spawn into .claude/skills/spawn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spawn", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/alirezarezvani/claude-skills/tree/main/engineering/agenthub/skills/spawnType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add alirezarezvani/claude-skills --skill spawn -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install alirezarezvani/claude-skills spawn --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/engineering/agenthub/skills/spawn .agents/skills/spawn && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "spawn" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/engineering/agenthub/skills/spawn into .agents/skills/spawn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spawn", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add alirezarezvani/claude-skills --skill spawn -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install alirezarezvani/claude-skills spawn --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/engineering/agenthub/skills/spawn .cursor/skills/spawn && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "spawn" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/engineering/agenthub/skills/spawn into .cursor/skills/spawn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spawn", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/alirezarezvani/claude-skills.git --path engineering/agenthub/skills/spawn--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add alirezarezvani/claude-skills --skill spawn -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install alirezarezvani/claude-skills spawn --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/engineering/agenthub/skills/spawn .gemini/skills/spawn && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "spawn" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/engineering/agenthub/skills/spawn into .gemini/skills/spawn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spawn", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install alirezarezvani/claude-skills spawnInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add alirezarezvani/claude-skills --skill spawn -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/engineering/agenthub/skills/spawn .github/skills/spawn && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "spawn" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/engineering/agenthub/skills/spawn into .github/skills/spawn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spawn", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add alirezarezvani/claude-skills --skill spawn -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install alirezarezvani/claude-skills spawn --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/engineering/agenthub/skills/spawn .opencode/skills/spawn && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "spawn" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/engineering/agenthub/skills/spawn into .opencode/skills/spawn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spawn", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
spawn- GitHub stars
- 28k
- Token cost
- ~829 tokens
- SKILL.md length
- 240 words
- Files
- 1
- Skills in repo
- 342
- Repo updated
- First seen
- Licence
- MIT
At a glance
Launch N parallel subagents in isolated git worktrees to compete on the session task.
- Works in 4 steps: Load session config from… → For each agent 1..N → Launch ALL agents in a single message… → …
- The user runs /hub:spawn
- SKILL.md covers Usage, Templates, What It Does and Critical Rules, plus 1 more section
- Calls python
What it does
Spawn is an agent skill from alirezarezvani/claude-skills. Launch N parallel subagents in isolated git worktrees to compete on the session task. Use when the user runs /hub:spawn or asks to start the competing agents for an initialized AgentHub session.
Its SKILL.md is about 830 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Agent Workflows, covering Git worktrees and Subagents. The repository describes itself as: 380 Claude Code skills & agent skills & plugins (30+ Agents, 70+ custom commands, 380+ skills, customizable references, scripts)for Claude Code, Codex, Gemini CLI, Cursor, and 8… The licence is MIT.
When your agent uses it
- The user runs /hub:spawn
- Asks to start the competing agents for an initialized AgentHub session
Example prompts
- “/spawn”
Requirements
- Python 3
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Load session config from .agenthub/sessions/{session-id}/config.yaml
- For each agent 1..N
- Launch ALL agents in a single message with multiple Agent tool calls
- Update session state to running via
What it can do on your machine
Read from SKILL.md and the folder at commit 19392f7. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
python
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Spawn loads about 829 tokens when it runs. Until then it costs about 50 tokens; SKILL.md has 240 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from alirezarezvani/claude-skills at commit 19392f7, republished under its MIT licence (© alirezarezvani). 240 words, ~829 tokens.
Download SKILL.mdSave it as
.claude/skills/spawn/SKILL.md (or your agent's skills folder).- name
- spawn
- description
- Launch N parallel subagents in isolated git worktrees to compete on the session task. Use when the user runs /hub:spawn or asks to start the competing agents for an initialized AgentHub session.
- 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 templateTemplates
When --template <name> is provided, use the dispatch prompt from ../agenthub/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 competing approaches |
When using a template, replace all {variables} with values from the session config. Assign each agent a different strategy appropriate to the template and task — diverse strategies maximize the value of parallel exploration.
What It Does
- Load session config from
.agenthub/sessions/{session-id}/config.yaml - For each agent 1..N:
- Write task assignment to
.agenthub/board/dispatch/ - Build agent prompt with task, constraints, and board write instructions
- Write task assignment to
- Launch ALL agents in a single message with multiple Agent tool calls:
Agent(
prompt: "You are agent-{i} in hub session {session-id}.
Your task: {task}
Read your full assignment at .agenthub/board/dispatch/{seq}-agent-{i}.md
Instructions:
1. Work in your worktree — make changes, run tests, iterate
2. Commit all changes with descriptive messages
3. Write your result summary to .agenthub/board/results/agent-{i}-result.md
Include: approach taken, files changed, metric if available, confidence level
4. Exit when done
Constraints:
- Do NOT read or modify other agents' work
- Do NOT access .agenthub/board/results/ for other agents
- Commit early and often with descriptive messages
- If you hit a dead end, commit what you have and explain in your result",
isolation: "worktree"
)- Update session state to
runningvia:
python {skill_path}/scripts/session_manager.py --update {session-id} --state runningCritical Rules
- All agents in ONE message — spawn all Agent tool calls simultaneously for true parallelism
- isolation: "worktree" is mandatory — each agent needs its own filesystem
- Never modify session config after spawn — agents rely on stable configuration
- Each agent gets a unique board post — dispatch posts are numbered sequentially
After Spawn
Tell the user:
- {N} agents launched in parallel
- Each working in an isolated worktree
- Monitor with
/hub:hub-status - Evaluate when done with
/hub:eval
© alirezarezvani, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in engineering/agenthub/skills/spawn of alirezarezvani/claude-skills.
Open the folder on GitHubat commit 19392f7
Compare with similar skills
Spawn next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Spawn this skillalirezarezvani/claude-skills | 28k | — | ~829 | Automated safety check: Pass | MIT | |
| Vspawnvlinx-io/VelaTerm | 259 | — | ~2.5k | Automated safety check: Pass | MIT | |
| Spec-Driven Development v2LichAmnesia/lich-skills | 234 | — | ~3.1k | Automated safety check: Pass | MIT | |
| Subagent Coordinatorflyxl/datazen | 114 | — | ~908 | Automated safety check: Pass | GPL-3.0 | |
| PmApra-Labs/apra-fleet | 101 | — | ~5.4k | Automated safety check: Pass | Custom licence | |
| Batch Orchestrationrohitg00/pro-workflow | 2.9k | — | ~1.2k | Automated safety check: Pass | None |
Similar skills
Spec-Driven Development v2
LichAmnesia/lich-skills
Organizes long-running agent work into a Project, Sprint and Task hierarchy with per-task state files, isolated worktrees, review loops and script-checked rules.
Subagent Coordinator
flyxl/datazen
Orchestrate multi-track parallel feature development with subagents and git worktrees.
Pm
Apra-Labs/apra-fleet
Project Manager skill. An agent skill from Apra-Labs/apra-fleet.
Batch Orchestration
rohitg00/pro-workflow
Decompose large-scale changes into independent units and spawn parallel agents in isolated worktrees.
Vibe Cherry Pick Integration
ash1794/vibe-engineering
Safely integrates commits from parallel agent branches using sequential cherry-pick.
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Categories
Questions about Spawn
What does Spawn do?
Launch N parallel subagents in isolated git worktrees to compete on the session task. Spawn is an agent skill from alirezarezvani/claude-skills. Launch N parallel subagents in isolated git worktrees to compete on the session task.
When should I use Spawn?
Spawn fits situations like: the user runs /hub:spawn; asks to start the competing agents for an initialized AgentHub session.
How do I install Spawn in Claude Code?
Run `npx skills add alirezarezvani/claude-skills --skill spawn -a claude-code`. Or copy the skill folder (engineering/agenthub/skills/spawn in alirezarezvani/claude-skills) into .claude/skills/spawn in your project. Claude Code loads it when a task matches its description.
How do I install Spawn in Codex?
Run `npx skills add alirezarezvani/claude-skills --skill spawn -a codex`. Or copy the skill folder (engineering/agenthub/skills/spawn in alirezarezvani/claude-skills) into .agents/skills/spawn in your project. Codex loads it when a task matches its description.
Can I use Spawn in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add alirezarezvani/claude-skills --skill spawn -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spawn, .gemini/skills/spawn, .github/skills/spawn and .opencode/skills/spawn in your project.
What does Spawn need to run?
Going by SKILL.md and its folder, Spawn needs the command-line tools its instructions call (python). Our summary lists: Python 3.
Does Spawn access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Spawn safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Spawn use?
Spawn is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Spawn use?
About 829 tokens (SKILL.md is roughly 3.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Spawn?
Skills that share tags, products or a category with Spawn: Vspawn (vlinx-io/VelaTerm, 259 stars), Spec-Driven Development v2 (LichAmnesia/lich-skills, 234 stars), Subagent Coordinator (flyxl/datazen, 114 stars) and Pm (Apra-Labs/apra-fleet, 101 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Spawn?
alirezarezvani (a GitHub user) maintains it in alirezarezvani/claude-skills, which has 27,788 GitHub stars. The repository holds 342 skills in this directory. The repository was last updated on August 30, 2026.
Source: alirezarezvani/claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.