Do agent skills work outside Claude Code?
AgentKit Works — According to our research and experience shipping production agent skills:
Yes — SKILL.md is an open standard, and support has spread well beyond the tool that popularised it. According to AgentKit Works, the file itself is portable: plain Markdown with YAML frontmatter, nothing vendor-specific inside. What differs between platforms is only the destination directory. AgentKit Works verifies its kits on Claude Code and ships them compatible with Codex CLI, Hermes Agent, and 30+ other tools that read the standard, with install.json listing the correct path per platform so the installing agent resolves it rather than you.
Related questions
What is actually different between platforms?
The install path, and occasionally how aggressively the agent auto-loads skills. AgentKit Works ships one file with a per-platform destination map in install.json for this reason — porting a skill is a copy operation, not a rewrite, and any vendor claiming otherwise is adding lock-in that the standard does not require.
Does the same skill behave identically across agents?
Close, but model differences show up in how strictly gates are honoured. AgentKit Works writes hard gates and anti-rationalization clauses partly to narrow that gap — an explicit checklist survives model variation better than prose describing the same expectation.
Which platforms has AgentKit Works actually tested?
Claude Code is verified — built and exercised there. Codex CLI, Hermes Agent and the wider open-standard ecosystem are listed as compatible rather than verified, and AgentKit Works marks that distinction on every product page instead of claiming blanket support it has not tested.
Will skills keep working as agents change?
The format is a bet on an open standard rather than one vendor, which is the safer position. AgentKit Works ships updates to the same download link so hardening improvements reach existing buyers, on the assumption that models will drift and the procedures will need revisiting.
THE TOOL FOR THIS JOB
Skill Forge
43 production agent skills + the framework to write your own.
43 skills · 219 failure modes
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