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.
npx agentmods add skills/buddyh/agent-skills/project-spawnnpx skills add buddyh/agent-skills --skill project-spawngit clone --depth 1 https://github.com/buddyh/agent-skillsWrote 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.
[](https://agentmods.dev/skills/buddyh/agent-skills/project-spawn)<a href="https://agentmods.dev/skills/buddyh/agent-skills/project-spawn"><img src="https://agentmods.dev/badge/skills/buddyh/agent-skills/project-spawn.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00073 | $0.00866 |
| Opus 5 | $0.00036 | $0.00433 |
| Sonnet 5 | $0.00015 | $0.00173 |
| Haiku 4.5 | $0.00007 | $0.00087 |
Grade A, and why
project-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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Project Spawn
Overview
Transfer context from the current conversation to a new session in a different project directory. This enables seamless context handoff when pivoting from a general session to focused project work.
Platform Support
- Claude Code:
claudeCLI - Codex:
codexCLI
The handoff workflow is identical on both platforms.
Workflow
Step 1: Resolve Target Project
Determine the target project directory:
- If explicit path/name provided: Use directly
- If project name provided: Search for matching directories in common locations (
~/repos/,~/projects/, etc.) - If no target specified: Detect from recent conversation context or ask the user
Step 1b: Handle Non-Existent Directory
If target directory doesn't exist, ask user:
"Directory
<path>doesn't exist. Want me to create it?"
- Create folder only
- Create folder + init git repo
- Create folder + init git + create GitHub repo (public)
- Create folder + init git + create GitHub repo (private)
- Cancel
Create as requested before proceeding to Step 2.
Step 2: Extract Relevant Context
Analyze the last 5-10 messages for content relevant to the target project:
- Tasks or work items discussed
- Specific files, scripts, or features mentioned
- Decisions made or questions raised
- Any errors or issues identified
- Uncommitted changes noted
Focus only on information relevant to the target project, not the entire conversation.
Step 3: Create Handoff Document
Write PROJECT_HANDOFF.md to the target project directory:
# Project Handoff - [DATE] [TIME]
## Context
[Why this handoff is happening - what triggered the pivot]
## Discussion Summary
[Relevant context extracted from conversation]
## Specific Tasks/Questions
- [Actionable items identified]
## Files/Areas Mentioned
- [Specific files or code areas referenced]
## Suggested Starting Point
[What to do first in this session]
Step 4: Launch Session
~/.claude/skills/project-spawn/scripts/spawn_session.sh "<project-path>" "<session-name>" [--agent claude|codex]
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 4d ago First seen · 135 lines · 73 tokens per session scan A 85b9dcce4ac6
project-spawn is a skill published in the GitHub repository buddyh/agent-skills (5 stars, last pushed 28d ago), licensed MIT. It adds 73 tokens to every session and 866 once invoked, about $0.0004 per session on Opus 5. 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.
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