Microsoft Skill Creator
MicrosoftDocs/mcp
Create agent skills for Microsoft technologies using official documentation.
Official agent skill
Fix Prompt Evaluation Diagnostics
by microsoft in microsoft/vscode-chat-customizations-evaluation
Applies the fixes suggested by the Chat Customizations Evaluations extension to a prompt, agent, skill or instruction file, changing only what each diagnostic requires.
Install Fix Prompt Evaluation Diagnostics
$ npx skills add microsoft/vscode-chat-customizations-evaluation --skill fix-customization-evaluation-diagnostics -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install microsoft/vscode-chat-customizations-evaluation fix-customization-evaluation-diagnostics --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/microsoft/vscode-chat-customizations-evaluation.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/fix-customization-evaluation-diagnostics .claude/skills/fix-customization-evaluation-diagnostics && rm -rf skills-srcUse ~/.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/
Install the "fix-customization-evaluation-diagnostics" agent skill from https://github.com/microsoft/vscode-chat-customizations-evaluation/tree/main/skills/fix-customization-evaluation-diagnostics into .claude/skills/fix-customization-evaluation-diagnostics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-customization-evaluation-diagnostics", 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 install https://github.com/microsoft/vscode-chat-customizations-evaluation/tree/main/skills/fix-customization-evaluation-diagnosticsType 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.
$ npx skills add microsoft/vscode-chat-customizations-evaluation --skill fix-customization-evaluation-diagnostics -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install microsoft/vscode-chat-customizations-evaluation fix-customization-evaluation-diagnostics --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/microsoft/vscode-chat-customizations-evaluation.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/fix-customization-evaluation-diagnostics .agents/skills/fix-customization-evaluation-diagnostics && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "fix-customization-evaluation-diagnostics" agent skill from https://github.com/microsoft/vscode-chat-customizations-evaluation/tree/main/skills/fix-customization-evaluation-diagnostics into .agents/skills/fix-customization-evaluation-diagnostics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-customization-evaluation-diagnostics", 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.
$ npx skills add microsoft/vscode-chat-customizations-evaluation --skill fix-customization-evaluation-diagnostics -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install microsoft/vscode-chat-customizations-evaluation fix-customization-evaluation-diagnostics --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/microsoft/vscode-chat-customizations-evaluation.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/fix-customization-evaluation-diagnostics .cursor/skills/fix-customization-evaluation-diagnostics && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "fix-customization-evaluation-diagnostics" agent skill from https://github.com/microsoft/vscode-chat-customizations-evaluation/tree/main/skills/fix-customization-evaluation-diagnostics into .cursor/skills/fix-customization-evaluation-diagnostics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-customization-evaluation-diagnostics", 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 https://github.com/microsoft/vscode-chat-customizations-evaluation.git --path skills/fix-customization-evaluation-diagnostics--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add microsoft/vscode-chat-customizations-evaluation --skill fix-customization-evaluation-diagnostics -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install microsoft/vscode-chat-customizations-evaluation fix-customization-evaluation-diagnostics --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/microsoft/vscode-chat-customizations-evaluation.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/fix-customization-evaluation-diagnostics .gemini/skills/fix-customization-evaluation-diagnostics && rm -rf skills-srcUse ~/.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/
Install the "fix-customization-evaluation-diagnostics" agent skill from https://github.com/microsoft/vscode-chat-customizations-evaluation/tree/main/skills/fix-customization-evaluation-diagnostics into .gemini/skills/fix-customization-evaluation-diagnostics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-customization-evaluation-diagnostics", 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.
$ gh skill install microsoft/vscode-chat-customizations-evaluation fix-customization-evaluation-diagnosticsInstalls 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).
$ npx skills add microsoft/vscode-chat-customizations-evaluation --skill fix-customization-evaluation-diagnostics -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/microsoft/vscode-chat-customizations-evaluation.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/fix-customization-evaluation-diagnostics .github/skills/fix-customization-evaluation-diagnostics && rm -rf skills-srcUse ~/.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/
Install the "fix-customization-evaluation-diagnostics" agent skill from https://github.com/microsoft/vscode-chat-customizations-evaluation/tree/main/skills/fix-customization-evaluation-diagnostics into .github/skills/fix-customization-evaluation-diagnostics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-customization-evaluation-diagnostics", 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.
$ npx skills add microsoft/vscode-chat-customizations-evaluation --skill fix-customization-evaluation-diagnostics -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install microsoft/vscode-chat-customizations-evaluation fix-customization-evaluation-diagnostics --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/microsoft/vscode-chat-customizations-evaluation.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/fix-customization-evaluation-diagnostics .opencode/skills/fix-customization-evaluation-diagnostics && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "fix-customization-evaluation-diagnostics" agent skill from https://github.com/microsoft/vscode-chat-customizations-evaluation/tree/main/skills/fix-customization-evaluation-diagnostics into .opencode/skills/fix-customization-evaluation-diagnostics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix-customization-evaluation-diagnostics", 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
fix-customization-evaluation-diagnostics- GitHub stars
- 141
- Token cost
- ~506 tokens
- SKILL.md length
- 261 words
- Files
- 1
- Skills in repo
- 2
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Applies the fixes suggested by the Chat Customizations Evaluations extension to a prompt, agent, skill or instruction file, changing only what each diagnostic requires.
- Resolving diagnostics on a prompt or skill file in the editor
- SKILL.md covers Purpose, Usage and Instructions
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Cleaning up contradictions and ambiguities in an agent instruction file
What it does
The extension's analyzer reports problems in prompt, agent, skill and instruction files: contradictions, ambiguities, persona conflicts, cognitive load issues and coverage gaps. This skill runs when you click the Implement suggestions button in the editor title bar, receiving diagnostics that each carry a line number, code, message and sometimes a suggestion. You can also call it directly, in which case the agent looks up the diagnostics from the extension itself.
For each diagnostic the agent edits the file directly, using the suggestion when there is one and its own judgment otherwise. It keeps the overall structure, tone and intent, and when two diagnostics conflict it picks the fix that leaves the prompt clearer and more consistent. It does not add instructions or sections that were not there and does not remove instructions unless a diagnostic calls for it, as with a contradiction.
When your agent uses it
- Resolving diagnostics on a prompt or skill file in the editor
- Cleaning up contradictions and ambiguities in an agent instruction file
- Applying evaluation suggestions without rewriting the whole file
Example prompts
- “Implement the suggestions from the evaluation diagnostics on this prompt file.”
- “Find the diagnostics in my agent file and fix the contradictions.”
- “Resolve the persona conflict flagged on line 12 of this instruction file.”
Requirements
- VS Code with the Chat Customizations Evaluations extension
What it can do on your machine
Read from SKILL.md and the folder at commit 53a27a9. 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
No scripts in the folder and no shell commands in SKILL.md.
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
Fix Prompt Evaluation Diagnostics loads about 506 tokens when it runs. Until then it costs about 56 tokens; SKILL.md has 261 words of instructions outside code blocks.
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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 261 words (~506 tokens).
“Fix issues found by the Chat Customizations Evaluations analyzer in prompt, agent, skill, and instruction files. The diagnostics include contradictions, ambiguities, persona conflicts, cognitive load issues, and coverage gaps.”
- name
- fix-customization-evaluation-diagnostics
Files
Just SKILL.md in skills/fix-customization-evaluation-diagnostics of microsoft/vscode-chat-customizations-evaluation.
Open the folder on GitHubat commit 53a27a9
Compare with similar skills
Fix Prompt Evaluation Diagnostics 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 | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Fix Prompt Evaluation Diagnostics this skillmicrosoft/vscode-chat-customizations-evaluation | 141 | — | ~506 | Automated safety check: Pass | Custom licence | |
| Microsoft Skill CreatorMicrosoftDocs/mcp | 1.9k | 3 repos | ~2.1k | Automated safety check: Pass | CC-BY-4.0 | |
| Harness Agent Team Designerrevfactory/harness | 9.1k | — | ~4.5k | Automated safety check: Pass | Apache-2.0 | |
| Harness Evolution Feedback Looprevfactory/harness | 9.1k | — | ~855 | Automated safety check: Pass | Apache-2.0 | |
| Skill Creatorccusage/ccusage | 19k | — | ~1.1k | Automated safety check: Pass | Custom licence | |
| Workflow Schema Tuningbreaking-brake/cc-wf-studio | 5.4k | — | ~1.3k | Automated safety check: Pass | Custom licence |
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Harness Evolution Feedback Loop
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Collects feedback on how an agent harness performed, generalizes it, and updates the harness agents, skills and orchestrator along with a change-history table.
Skill Creator
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Guides repo-local skill creation and updates. An agent skill from ccusage/ccusage.
Workflow Schema Tuning
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Guides edits to cc-wf-studio's workflow schema so AI agents generate better workflows, treating schema text as prompt engineering rather than validation.
Agnix
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A skill your agent uses when user asks to 'lint agent configs', 'validate skills', 'check CLAUDE.md', 'validate hooks', 'lint MCP'.
More from microsoft/vscode-chat-customizations-evaluation
- Official
Analyze Chat Customization
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Runs Chat Customizations Evaluations analysis for the active customization file and summarizes the findings from the Problems panel.
Related
Works with
Categories
Questions about Fix Prompt Evaluation Diagnostics
What does Fix Prompt Evaluation Diagnostics do?
Applies the fixes suggested by the Chat Customizations Evaluations extension to a prompt, agent, skill or instruction file, changing only what each diagnostic requires. The extension's analyzer reports problems in prompt, agent, skill and instruction files: contradictions, ambiguities, persona conflicts, cognitive load issues and coverage gaps. This skill runs when you click the Implement suggestions button in the editor title bar, receiving diagnostics that each carry a line number, code, message and sometimes a suggestion.
When should I use Fix Prompt Evaluation Diagnostics?
Fix Prompt Evaluation Diagnostics fits situations like: resolving diagnostics on a prompt or skill file in the editor; cleaning up contradictions and ambiguities in an agent instruction file; applying evaluation suggestions without rewriting the whole file.
How do I install Fix Prompt Evaluation Diagnostics in Claude Code?
Run `npx skills add microsoft/vscode-chat-customizations-evaluation --skill fix-customization-evaluation-diagnostics -a claude-code`. Or copy the skill folder (skills/fix-customization-evaluation-diagnostics in microsoft/vscode-chat-customizations-evaluation) into .claude/skills/fix-customization-evaluation-diagnostics in your project. Claude Code loads it when a task matches its description.
How do I install Fix Prompt Evaluation Diagnostics in Codex?
Run `npx skills add microsoft/vscode-chat-customizations-evaluation --skill fix-customization-evaluation-diagnostics -a codex`. Or copy the skill folder (skills/fix-customization-evaluation-diagnostics in microsoft/vscode-chat-customizations-evaluation) into .agents/skills/fix-customization-evaluation-diagnostics in your project. Codex loads it when a task matches its description.
Can I use Fix Prompt Evaluation Diagnostics 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 microsoft/vscode-chat-customizations-evaluation --skill fix-customization-evaluation-diagnostics -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fix-customization-evaluation-diagnostics, .gemini/skills/fix-customization-evaluation-diagnostics, .github/skills/fix-customization-evaluation-diagnostics and .opencode/skills/fix-customization-evaluation-diagnostics in your project.
What does Fix Prompt Evaluation Diagnostics need to run?
SKILL.md names no scripts, command-line tools or credentials: Fix Prompt Evaluation Diagnostics is instructions for the agent only. Our summary lists: VS Code with the Chat Customizations Evaluations extension.
Does Fix Prompt Evaluation Diagnostics 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 Fix Prompt Evaluation Diagnostics 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 Fix Prompt Evaluation Diagnostics use?
Fix Prompt Evaluation Diagnostics has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Fix Prompt Evaluation Diagnostics use?
About 506 tokens (SKILL.md is roughly 2k 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 Fix Prompt Evaluation Diagnostics?
Skills that share tags, products or a category with Fix Prompt Evaluation Diagnostics: Microsoft Skill Creator (MicrosoftDocs/mcp, 1.9k stars), Harness Agent Team Designer (revfactory/harness, 9.1k stars), Harness Evolution Feedback Loop (revfactory/harness, 9.1k stars) and Skill Creator (ccusage/ccusage, 19k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Fix Prompt Evaluation Diagnostics?
microsoft (a GitHub organization, an official publisher) maintains it in microsoft/vscode-chat-customizations-evaluation, which has 141 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on October 3, 2026.
Source: microsoft/vscode-chat-customizations-evaluation on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.