Agent skill

Skill Forge Convert

by AgriciDaniel in AgriciDaniel/skill-forge

Convert Claude Code skills to work on OpenAI Codex, Google Gemini CLI, Google Antigravity, and Cursor.

Install Skill Forge Convert

skills CLI

$ npx skills add AgriciDaniel/skill-forge --skill skill-forge-convert -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install AgriciDaniel/skill-forge skill-forge-convert --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/AgriciDaniel/skill-forge.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/skill-forge-convert .claude/skills/skill-forge-convert && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "skill-forge-convert" agent skill from https://github.com/AgriciDaniel/skill-forge/tree/main/skills/skill-forge-convert into .claude/skills/skill-forge-convert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-forge-convert", 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

$skill-installer install https://github.com/AgriciDaniel/skill-forge/tree/main/skills/skill-forge-convert

Type 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.

skills CLI

$ npx skills add AgriciDaniel/skill-forge --skill skill-forge-convert -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install AgriciDaniel/skill-forge skill-forge-convert --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/AgriciDaniel/skill-forge.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/skill-forge-convert .agents/skills/skill-forge-convert && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "skill-forge-convert" agent skill from https://github.com/AgriciDaniel/skill-forge/tree/main/skills/skill-forge-convert into .agents/skills/skill-forge-convert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-forge-convert", 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.

skills CLI

$ npx skills add AgriciDaniel/skill-forge --skill skill-forge-convert -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install AgriciDaniel/skill-forge skill-forge-convert --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/AgriciDaniel/skill-forge.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/skill-forge-convert .cursor/skills/skill-forge-convert && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "skill-forge-convert" agent skill from https://github.com/AgriciDaniel/skill-forge/tree/main/skills/skill-forge-convert into .cursor/skills/skill-forge-convert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-forge-convert", 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

$ gemini skills install https://github.com/AgriciDaniel/skill-forge.git --path skills/skill-forge-convert

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add AgriciDaniel/skill-forge --skill skill-forge-convert -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install AgriciDaniel/skill-forge skill-forge-convert --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/AgriciDaniel/skill-forge.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/skill-forge-convert .gemini/skills/skill-forge-convert && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "skill-forge-convert" agent skill from https://github.com/AgriciDaniel/skill-forge/tree/main/skills/skill-forge-convert into .gemini/skills/skill-forge-convert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-forge-convert", 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.

GitHub CLI

$ gh skill install AgriciDaniel/skill-forge skill-forge-convert

Installs 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).

skills CLI

$ npx skills add AgriciDaniel/skill-forge --skill skill-forge-convert -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/AgriciDaniel/skill-forge.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/skill-forge-convert .github/skills/skill-forge-convert && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "skill-forge-convert" agent skill from https://github.com/AgriciDaniel/skill-forge/tree/main/skills/skill-forge-convert into .github/skills/skill-forge-convert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-forge-convert", 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.

skills CLI

$ npx skills add AgriciDaniel/skill-forge --skill skill-forge-convert -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install AgriciDaniel/skill-forge skill-forge-convert --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/AgriciDaniel/skill-forge.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/skill-forge-convert .opencode/skills/skill-forge-convert && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "skill-forge-convert" agent skill from https://github.com/AgriciDaniel/skill-forge/tree/main/skills/skill-forge-convert into .opencode/skills/skill-forge-convert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-forge-convert", 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: skill-forge-convert
GitHub stars: 177
Token cost: ~1.2k tokens
SKILL.md length: 345 words
Files: 1
Skills in repo: 9
Repo updated: Apr 10, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Convert Claude Code skills to work on OpenAI Codex, Google Gemini CLI, Google Antigravity, and Cursor.

Works in 7 steps: Read Source Skill → Analyze Platform Compatibility → Convert to Target Platforms → …
User says convert skill
SKILL.md covers Process, Platform Quick Reference and Tier Conversion Guidelines
Calls python, codex and gemini

What it does

Skill Forge Convert is an agent skill from AgriciDaniel/skill-forge. Convert Claude Code skills to work on OpenAI Codex, Google Gemini CLI, Google Antigravity, and Cursor. Analyzes platform-specific features, generates target files (openai.yaml, AGENTS.md, GEMINI.md, .mdc rules), adapts frontmatter, converts MCP config, and produces compatibility reports. Use when user says "convert skill", "port skill", "multi-platform", "skill for codex", "skill for gemini", "skill for antigravity", "skill for cursor", "cross-platform skill", "convert to codex", "convert to gemini", "convert to…

Its SKILL.md is about 1.2k 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 Agent instruction files. It works with Model Context Protocol, Google Gemini and OpenAI. The repository describes itself as: Ultimate Claude Code skill creator — design, scaffold, build, review, evolve, and publish production-grade AI agent skills. The licence is MIT.

When your agent uses it

User says convert skill
Skill for codex
Skill for gemini
Skill for antigravity

Example prompts

“convert skill”
“port skill”
“multi-platform”
“/skill-forge-convert”

Requirements

Python 3

Workflow steps

7 steps, taken from the step headings in SKILL.md.

Read Source Skill
Analyze Platform Compatibility
Convert to Target Platforms
Handle Claude-Only Features
Validate Converted Skills
Generate Deployment Report
Generate Multi-Platform Install Script

What it can do on your machine

Read from SKILL.md and the folder at commit 2872ee9. 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
- codex
- gemini
- cursor
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

Skill Forge Convert loads about 1.2k tokens when it runs. Until then it costs about 144 tokens; SKILL.md has 345 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~144
When it runs · the whole SKILL.md, loaded when a task matches: ~1.2k

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 AgriciDaniel/skill-forge at commit 2872ee9, republished under its MIT licence (© AgriciDaniel). 345 words, ~1,169 tokens.

Download SKILL.mdSave it as .claude/skills/skill-forge-convert/SKILL.md (or your agent's skills folder).

name: skill-forge-convert
description: Convert Claude Code skills to work on OpenAI Codex, Google Gemini CLI, Google Antigravity, and Cursor. Analyzes platform-specific features, generates target files (openai.yaml, AGENTS.md, GEMINI.md, .mdc rules), adapts frontmatter, converts MCP config, and produces compatibility reports. Use when user says "convert skill", "port skill", "multi-platform", "skill for codex", "skill for gemini", "skill for antigravity", "skill for cursor", "cross-platform skill", "convert to codex", "convert to gemini", "convert to antigravity", or "convert to cursor".

Skill Conversion — Multi-Platform

Convert Claude Code skills to work on OpenAI Codex, Google Gemini CLI, Google Antigravity, and Cursor while maintaining quality and following each platform's best practices.

Process

Step 1: Read Source Skill

Read the source SKILL.md and parse frontmatter
Detect skill complexity tier (1-4)
Inventory all files: scripts/, references/, agents/, sub-skills
Identify MCP config (.mcp.json) if present

Step 2: Analyze Platform Compatibility

Run dry-run analysis first:

bash

python scripts/convert_skill.py <path> --dry-run --target all

Review the compatibility report:

Portable fields: Transfer directly (name, description, license)
Adaptable fields: Need platform-specific handling
Claude-only fields: Will be stripped with warnings

Step 3: Convert to Target Platforms

Run the conversion:

bash

python scripts/convert_skill.py <path> --target codex,gemini,antigravity,cursor --output dist/

For MCP config conversion:

bash

python scripts/convert_skill.py <path> --target all --output dist/ --include-mcp

Step 4: Handle Claude-Only Features

Features that need manual adaptation per platform:

Claude Feature	Codex	Gemini/Antigravity	Cursor
`allowed-tools`	Supported	Remove; all tools available	Remove; no equivalent
`context: fork`	No equivalent	No equivalent	No equivalent
`hooks`	1 event (notify)	Partial (CLI)	6 events (beta)
`model` selection	No equivalent	No equivalent	No equivalent
`Task` delegation	Break into separate skills	Break into separate skills	Background Agents (Ultra plan)
`/slash` commands	`$mention` syntax	Description-based activation	Description-based + `@rule`
Sub-skill routing	Separate skills with `$mention`	Separate skills, LLM-routed	Separate skills, LLM-routed

Step 5: Validate Converted Skills

Run validation on each generated output:

bash

python scripts/validate_skill.py dist/codex/<skill-name>/
python scripts/validate_skill.py dist/gemini/<skill-name>/
python scripts/validate_skill.py dist/antigravity/<skill-name>/
python scripts/validate_skill.py dist/cursor/<skill-name>/

Fix any critical or high-priority issues before proceeding.

Step 6: Generate Deployment Report

Present the user with a summary:

## Conversion Report: {skill-name}

| Platform | Score | Files | Warnings | Manual Steps |
|----------|-------|-------|----------|-------------|
| Codex | 92% | 4 | 2 | 1 |
| Gemini | 88% | 3 | 3 | 1 |
| Antigravity | 88% | 3 | 3 | 1 |
| Cursor | 88% | 3 | 3 | 1 |

### Generated Files
[list per platform]

### Warnings
[list per platform]

### Manual Steps Required
[list per platform]

Step 7: Generate Multi-Platform Install Script

When converting for all platforms (--target all), the script auto-generates install-multiplatform.sh that:

Auto-detects the current agent platform
Installs to the correct skill path
Supports --platform flag for explicit selection

Platform Quick Reference

Platform	Skill Path	Instruction File	Config Format
Claude Code	`.claude/skills/`	`CLAUDE.md`	JSON (`.mcp.json`)
OpenAI Codex	`.agents/skills/`	`AGENTS.md`	TOML (`config.toml`)
Gemini CLI	`.gemini/skills/`	`GEMINI.md`	JSON (`settings.json`)
Antigravity	`.agent/skills/`	`GEMINI.md`	JSON (`mcp_config.json`)
Cursor	`.cursor/skills/`	`.cursor/rules/*.mdc`	JSON (`mcp.json`)

For full platform specs, load references/platforms.md.

Tier Conversion Guidelines

Tier 1 (single SKILL.md): Converts cleanly. Auto-convert recommended.
Tier 2 (skill + scripts): Converts well. Verify script paths.
Tier 3 (multi-skill): Partial. Each sub-skill converts independently. Routing needs manual work.
Tier 4 (ecosystem): Manual review required. Subagent delegation needs platform adaptation.

Files

Just SKILL.md in skills/skill-forge-convert of AgriciDaniel/skill-forge.

Open the folder on GitHubat commit 2872ee9

Compare with similar skills

Skill Forge Convert 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 Forge Convert compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Skill Forge Convert this skillAgriciDaniel/skill-forge	177	—	~1.2k	Automated safety check: Pass	MIT	6 mo ago
Remember Learningsdyad-sh/dyad	22k	—	~1.1k	Automated safety check: Pass	Custom licence	yesterday
Migrate To Antigravityyuting0624/antigravity-for-claude-code	376	—	~2k	Automated safety check: Pass	MIT	3 days ago
Claude To Codex Migrationgrandamenium/cortextos	101	—	~12k	Automated safety check: Warn	MIT	15 days ago
Codebase Managementgiancarloerra/SocratiCode	3.3k	1 repos	~1.8k	Automated safety check: Pass	AGPL-3.0	today
Codebase Explorationgiancarloerra/SocratiCode	3.3k	1 repos	~1.5k	Automated safety check: Pass	AGPL-3.0	today

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Questions about Skill Forge Convert

What does Skill Forge Convert do?

Convert Claude Code skills to work on OpenAI Codex, Google Gemini CLI, Google Antigravity, and Cursor. Skill Forge Convert is an agent skill from AgriciDaniel/skill-forge. Convert Claude Code skills to work on OpenAI Codex, Google Gemini CLI, Google Antigravity, and Cursor.

When should I use Skill Forge Convert?

Skill Forge Convert fits situations like: user says convert skill; skill for codex; skill for gemini; skill for antigravity.

How do I install Skill Forge Convert in Claude Code?

Run `npx skills add AgriciDaniel/skill-forge --skill skill-forge-convert -a claude-code`. Or copy the skill folder (skills/skill-forge-convert in AgriciDaniel/skill-forge) into .claude/skills/skill-forge-convert in your project. Claude Code loads it when a task matches its description.

How do I install Skill Forge Convert in Codex?

Run `npx skills add AgriciDaniel/skill-forge --skill skill-forge-convert -a codex`. Or copy the skill folder (skills/skill-forge-convert in AgriciDaniel/skill-forge) into .agents/skills/skill-forge-convert in your project. Codex loads it when a task matches its description.

Can I use Skill Forge Convert 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 AgriciDaniel/skill-forge --skill skill-forge-convert -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/skill-forge-convert, .gemini/skills/skill-forge-convert, .github/skills/skill-forge-convert and .opencode/skills/skill-forge-convert in your project.

What does Skill Forge Convert need to run?

Going by SKILL.md and its folder, Skill Forge Convert needs the command-line tools its instructions call (python, codex, gemini and cursor). Our summary lists: Python 3.

Does Skill Forge Convert 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 Skill Forge Convert 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 Skill Forge Convert use?

Skill Forge Convert 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 Skill Forge Convert use?

About 1.2k tokens (SKILL.md is roughly 4.7k 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 Skill Forge Convert?

Skills that share tags, products or a category with Skill Forge Convert: Remember Learnings (dyad-sh/dyad, 22k stars), Migrate To Antigravity (yuting0624/antigravity-for-claude-code, 376 stars), Claude To Codex Migration (grandamenium/cortextos, 101 stars) and Codebase Management (giancarloerra/SocratiCode, 3.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Skill Forge Convert?

AgriciDaniel (a GitHub user) maintains it in AgriciDaniel/skill-forge, which has 177 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on April 10, 2026.

Source: AgriciDaniel/skill-forge on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Skill Forge Convert

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Skill Conversion — Multi-Platform

Process

Step 1: Read Source Skill

Step 2: Analyze Platform Compatibility

Step 3: Convert to Target Platforms

Step 4: Handle Claude-Only Features

Step 5: Validate Converted Skills

Step 6: Generate Deployment Report

Step 7: Generate Multi-Platform Install Script

Platform Quick Reference

Tier Conversion Guidelines

Files

Compare with similar skills

Similar skills

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Related

Questions about Skill Forge Convert