aigon-feature-open

aigon-feature-open is a skill for Claude Code, Codex from jayvee/aigon. It costs 14 tokens per session (479 once invoked), scanned A, original, Apache-2.0.

A command that opens a feature worktree in a terminal and starts an AI coding agent. A worktree is a separate working copy of a Git repository, useful for keeping feature changes apart.

In plain words
What is it for?
Opening the newest or a specified feature worktree and launching Claude Code, Cursor, Antigravity, or Codex with the matching agent code.
Why use it?
It removes the manual setup needed to find the right worktree, choose an agent, and start the feature task.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/jayvee/aigon/aigon-feature-open
Any agent
npx skills add jayvee/aigon --skill aigon-feature-open
Clone the repo
git clone --depth 1 https://github.com/jayvee/aigon

Made for: Claude Code, Codex.

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 aigon-feature-open

README.md
[![agentmods](https://agentmods.dev/badge/skills/jayvee/aigon/aigon-feature-open.svg)](https://agentmods.dev/skills/jayvee/aigon/aigon-feature-open)
Your own site
<a href="https://agentmods.dev/skills/jayvee/aigon/aigon-feature-open"><img src="https://agentmods.dev/badge/skills/jayvee/aigon/aigon-feature-open.svg" alt="Measured on agentmods" height="20"></a>
Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 479 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00014 $0.00479
Opus 5 $0.00007 $0.00239
Sonnet 5 $0.00003 $0.00096
Haiku 4.5 $0.00001 $0.00048

Measured 5d ago against content hash e7ca2f282cc8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

aigon-feature-open 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 5d 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.

.agents/skills/aigon-feature-open/SKILL.md · 59 lines

What it actually says

feature-open

Open a feature worktree in terminal and automatically start the AI agent with aigon-feature-do.

Usage

aigon-feature-open [feature-id] [agent-code]
  • aigon-feature-open — open the most recently created worktree
  • aigon-feature-open 77 — open any worktree for feature 77
  • aigon-feature-open 77 cx — open specifically the cx (Codex) worktree for feature 77

Agent Mappings

Code Agent Command Mode
cc Claude Code claude --permission-mode acceptEdits Auto-edits, prompts for risky Bash
cu Cursor agent --force Auto-approves commands (yolo mode)
ag Antigravity agy --dangerously-skip-permissions Auto-approves all
cx Codex codex --full-auto Workspace-write, smart approval

Safe in worktrees since you can always git reset --hard.

Permission Tips

When an agent asks for permission, here's how to quickly allow:

Agent Allow once Allow always Toggle full-auto
Claude Code Press Enter at prompt Choose "Always allow" at prompt Shift+Tab cycles modes
Cursor Click "Run" Click "Add to allowlist" Enable YOLO in settings
Codex Approve at prompt "Allow and remember" (session) /mode command

Step 1: Run the CLI command

aigon feature-open $ARGUMENTS

This will:

  1. Find the matching worktree
  2. Create a Warp launch configuration
  3. Open Warp with the worktree directory
  4. Auto-run the agent CLI with aigon-feature-do <ID>

Step 2: Confirm to user

Tell the user:

  • Which worktree was opened
  • Which agent was launched with which feature ID
  • That the agent should start implementing automatically
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. 5d ago First seen · 59 lines · 14 tokens per session scan A e7ca2f282cc8

Subscribe to this mod's changes

aigon-feature-open is a skill published in the GitHub repository jayvee/aigon (24 stars, last pushed 4d ago), licensed Apache-2.0. It adds 14 tokens to every session and 479 once invoked, about $0.0001 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 2026-08-30.