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    Cross Agent Skill Porting with Codex

    by Markus Isaksson

    Triage and port Agensi skills into Codex/OpenAI adapters using portable cores and thin platform layers.

    Updated May 2026
    0 installs

    Free

    One-time purchase

    Included in download

    • Downloadable skill package
    • Works with Grok, Cursor
    • 3 permissions declared
    • Instant install

    Sample Output

    A real example of what this skill produces.

    A Portability Assessment with an ecosystem access table, use-directly / thin-adapter / full-port verdict, portable-core notes, generated Codex adapter files or copy, degradation notes, validation checks, and next step.

    About This Skill

    Multi-Platform Agent Portability

    In the rapidly evolving AI landscape, being locked into a single agent ecosystem is a technical risk. This skill solves the "agent lock-in" problem by decoupling your AI tool logic from specific platform implementations. It allows developers to maintain a single, "portable core" of logic while generating thin, platform-specific adapters for every major coding agent.

    What it does

    The skill analyzes existing agent instructions and splits them into two distinct layers. The Portable Core houses the domain logic, operating procedures, and guardrails. The Platform Adapters handle environment-specific triggers, tool naming conventions (e.g., mapping bash to terminal tools), and metadata requirements for specific clients.

    Supported Platforms

    • Codex/OpenAI: Clean SKILL.md frontmatter and openai.yaml configs.
    • Claude Code: Intent-rich descriptions and Claude-specific tool mappings.
    • Cursor & Copilot: .cursor/rules and .github/instructions integration.
    • Grok & Gemini: Optimized CLI language and long-context anchors.

    Why use this instead of manual prompting?

    Manually rewriting skills for different agents is error-prone. You might forget that one agent uses 'Apply Path' while another uses 'write_file'. This skill automates the translation of tool-calling conventions and ensures your prompt logic isn't degraded when moving across models with different context windows or personality biases.

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    Security Scanned

    Passed automated security review

    Permissions

    Terminal / Shell
    Read Files
    Write Files

    File Scopes

    **/SKILL.md
    **/agents/openai.yaml
    .cursor/**
    .github/instructions/**
    **/*.md
    **/*.yaml
    **/adapters/**
    **/portable-core/**
    MCP-fetched or user-provided skill source files
    User-selected output directories

    Terminal access is for local validation and file discovery. Writes are limited to generated portable cores, Codex adapters, and user-approved adapter directories. Marketplace fetching should normally be handled by the MCP connector before porting starts.

    Optimized for Codex performing local file edits and producing OpenAI/Codex adapters. Can design adapters for Claude Code, Grok, Cursor, GitHub Copilot, Gemini CLI, and other Agensi-compatible agents, but does not promise identical behavior across platforms.

    Frequently Asked Questions

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