migrate-dual-harness SKILL.md skillB
migrate-dual-harness from coalesce-labs/catalyst is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add coalesce-labs/catalyst/migrate-dual-harness@git:20260727.adff262Pins git:20260727.adff262 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- coalesce-labs/catalyst
- Path
plugins/foundry/skills/migrate-dual-harness/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260727.adff262, committed Jul 27, 2026
- First version recorded
- Jul 27, 2026
- Size
- 16,723 bytes
- Repository stars
- 20
- License
- none declared
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Migrate Dual-Harness Converge a single-harness repo (Claude-only monolithic `CLAUDE.md`, or Codex-only `AGENTS.md` with no bridge) onto the target dual-harness layout, applying every mechanical fix automatically and only asking the model to do the one thing a script can't: split a monolithic `CLAUDE.md` into its portable core and its Claude-specific remainder. **User-invoked only.** This skill sets `disable-model-invocation: true`, so nothing can auto-trigger it as a handoff — not `catalyst-foundry:setup-catalyst` (which hits this exact case at its rc `11` row) and not `check-project-setup.sh`'s §10 checkup warning. Both merely *reference* `/catalyst-foundry:migrate-dual-harness` and tell the user to run it themselves; invoke this skill directly (`/catalyst-foundry:migrate-dual-harness`) to perform the split. ## Target layout - `AGENTS.md` — portable, tool-agnostic instructions (canonical). - `CLAUDE.md` — thin bridge: literal line 1 is `@AGENTS.md`, then only Claude-specific notes. - `.agents/skills/` — canonical skills dir. - `.claude/skills` — committed **relative** symlink → `../.agents/skills`. …
Read the whole file at its exact version.
How to install
mdr add coalesce-labs/catalyst/migrate-dual-harness@sha256:43251aa191fd567bThe line at the top of this page pins the label git:20260727.adff262, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_h332emsotbt2ad5v)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, all committed on Jul 27, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260727.adff262 latest | 2026-07-27 | adff262 | 16,723 B | B | view · diff |
| git:20260727.1a55693 | 2026-07-27 | 1a55693 | 13,673 B | B | view · diff |
| git:20260727.0afc204 | 2026-07-27 | 0afc204 | 8,738 B | B | view |
Audit of the latest version
- fail: Frontmatter declares a description
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Size between 200 bytes and 200 KB (16723 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
coalesce-labs/catalyst · 20 stars · license none declared · pushed 2026-09-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_h332emsotbt2ad5v GET https://markdownregistry.com/api/v1/resolve?ref=coalesce-labs/catalyst/migrate-dual-harness GET https://markdownregistry.com/api/v1/blob/43251aa191fd567b04ba5376c4b4280d44ff27a59529cc20d2cc3850933b177d
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.