spawn

spawn is a command for Claude Code from cdeust/ai-architect-mcp-codebase. It costs 0 tokens per session (146 once invoked), scanned A, original, MIT.

A command that starts another coding agent in its own Git worktree, which is a separate working copy and branch of a repository. The new agent runs as an independent Claude Code session.

In plain words
What is it for?
Use it to delegate a named task, start an interactive agent session, and receive the separate worktree path and branch name.
Why use it?
It lets another agent work on a task without mixing its files or unfinished changes into the current working copy.

Command for Claude Code

Written for Claude Code: $ARGUMENTS substitution. Also seen: mentions Claude Code.

Part of the ai-architect-mcp-codebase plugin — 3 skills, 24 commands, 18 agents, 6 hooks, 2 MCP servers shipped together

Good fit Use it to delegate a named task, start an interactive agent session, and receive the separate worktree path and branch name.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/cdeust/ai-architect-mcp-codebase/spawn
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/cdeust/ai-architect-mcp-codebase

Made for: Claude Code.

Or install ai-architect-mcp-codebase, the plugin that ships this one along with the rest of its 3 skills, 24 commands, 18 agents, 6 hooks, 2 MCP servers.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for spawn

README.md
[![agentmods](https://agentmods.dev/badge/commands/cdeust/ai-architect-mcp-codebase/spawn/github.svg)](https://agentmods.dev/commands/cdeust/ai-architect-mcp-codebase/spawn)
Your own site
<a href="https://agentmods.dev/commands/cdeust/ai-architect-mcp-codebase/spawn"><img src="https://agentmods.dev/badge/commands/cdeust/ai-architect-mcp-codebase/spawn/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for spawn

Your own site · 80×15
<a href="https://agentmods.dev/commands/cdeust/ai-architect-mcp-codebase/spawn"><img src="https://agentmods.dev/badge/commands/cdeust/ai-architect-mcp-codebase/spawn.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 146 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00146
Opus 5.5 $0.00000 $0.00058
Sonnet 5.5 $0.00000 $0.00029
Haiku 4.5 $0.00000 $0.00015

Measured 1mo ago against content hash 48058a5a3a07, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

spawn scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/commands/agent/spawn.md · 19 lines

What it actually says

Spawn Agent in Worktree

Spawn an agent as a standalone Claude Code session in an isolated git worktree.

Instructions

  1. Parse arguments: the first word is the agent name, the rest is the task description. Example: /agent-spawn engineer Fix the auth bug in login.py

  2. Validate the agent exists by checking agents/<name>.md or agents/genius/<name>.md.

  3. Run: scripts/spawn-agent.sh <agent-name> "<task>"

  4. Report the worktree path and branch name to the user.

  5. If no task is provided, spawn in interactive REPL mode (no -p flag).

$ARGUMENTS

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 19 lines · 0 tokens per session scan A 48058a5a3a07

Subscribe to this mod's changes

spawn is a command published in the GitHub repository cdeust/ai-architect-mcp-codebase (7 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 146 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other commands, from other repositories

converge

Run an unattended review→fix→re-review loop on the current branch until the reviewer has no findings at or above Medium, then push once. Findings stay in a local scratch file and are never posted to GitHub. Stops early on oscillation, a red test suite, or a 4-review cap.

lugassawan/swe-workbench · 62 tokens

extend

Capture a mid-PR sub-idea and implement it onto the current open PR's branch — no new branch, no new PR. Preserves Verify → Review → Deliver.

lugassawan/swe-workbench · 35 tokens

doctor

Read-only preflight check of runtime dependencies (gh, git, jq, rimba, claude, python3) plus gh auth status and .claude/cache/ repo hygiene. Prints a green/red table; never modifies state. Exit 0 regardless of findings; exits 1 only if the swe-workbench-doctor command is not on PATH.

lugassawan/swe-workbench · 71 tokens

implement

Drive a feature implementation end-to-end from a ticket or spec — branch, plan, build, verify, review, deliver.

lugassawan/swe-workbench · 24 tokens

hotfix

Ship a fast branch-based P0 hotfix — diagnose, implement, open a ready-for-review PR, then verify + review after (deferred by design).

lugassawan/swe-workbench · 32 tokens

sync

Bring the current branch up to date with the default branch — delegates the mechanical merge/rebase to rimba (or git), then walks through any conflicts file-by-file with a recommended resolution before applying. Never auto-pushes. Always fetches origin's default branch before comparing. Pass --rebase to rebase instead…

lugassawan/swe-workbench · 102 tokens