Model Prompt Lab
Build, migrate, diagnose and benchmark production LLM system prompts
- What
- Build, migrate, diagnose and benchmark production LLM system prompts
- Cost
- Free
- Needs
- None — no account, no API key. Python 3 is needed only if you run the skill's helper scripts.
- Install
- Copy the installer prompt below into your Muse — your agent does the rest.
A Muse agent skill for production prompt engineering: build production system prompts, migrate prompts between models, diagnose misbehaving prompts (duplication first, subtract before adding), design reproducible prompt benchmarks, and work a disciplined "Fable mode" process for hard messy problems. Model profiles are dated and must be source-verified against the owning docs before use; benchmarks produce plans and ledgers, never claimed results. Ported from a community plugin.
Curated by Skill Harbor — free, open-source build (MIT) by @Israelmusondaayliffe.
Version:
Install
Prerequisites: None — no account, no API key. Python 3 is needed only if you run the skill's helper scripts. No GitHub account needed unless listed here. Install "Model Prompt Lab" for me. A Muse agent skill for production prompt engineering: build, migrate, diagnose and benchmark LLM system prompts. Repository: https://github.com/Israelmusondaayliffe/muse-skills/tree/main/skills/model-prompt-lab 1. Fetch the SKILL.md file, scripts and references from the repository path into a temporary folder and summarize what it does in one or two sentences. 2. Safety check: review the SKILL.md and Python scripts for anything suspicious (unexpected network calls, shell commands, credential harvesting). STOP on any red flag and tell me. 3. Install it as a skill: copy SKILL.md, scripts and references into the agent's skills directory, in a folder named "model-prompt-lab". 4. Verify with no network calls: frontmatter valid, Python scripts compile. 5. Report what was installed, where, and anything left for me to do. GitHub is optional: if I have a GitHub account or the gh CLI, you may use it; otherwise public access is fine. Never require it unless it's in the prerequisites above. Rules: don't touch anything outside the temp folder and the install target. If anything looks off, stop and ask me.
Questions
How do I install a skill?
Every product page includes a copy-paste install prompt. Paste it into your Muse and it sets the skill up for you — no manual configuration.
Where does my money go?
Straight to the seller. Skill Harbor never processes payments: checkout happens on the seller’s own page, usually Stripe.
What does the ✓ next to a creator’s name mean?
It means we confirmed the identity of the person behind the listing. It says nothing about the code itself — always check a skill before installing it.