Azsdk Common SDK Release
Azure/azure-sdk-for-android
Check release readiness and trigger the release pipeline for Azure SDK packages.
Release-readiness umbrella check for a scaffolded harness — runs doctor, witness verify, hardcoded-path scan, MCP server config, and GCP Secret Manager validation in one shot.
Install Validate Harness
$ npx skills add ruvnet/metaharness --skill validate-harness -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ruvnet/metaharness validate-harness --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/ruvnet/metaharness.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude-plugin/skills/validate-harness .claude/skills/validate-harness && 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 "validate-harness" agent skill from https://github.com/ruvnet/metaharness/tree/main/.claude-plugin/skills/validate-harness into .claude/skills/validate-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "validate-harness", 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/ruvnet/metaharness/tree/main/.claude-plugin/skills/validate-harnessType 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 ruvnet/metaharness --skill validate-harness -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ruvnet/metaharness validate-harness --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ruvnet/metaharness.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude-plugin/skills/validate-harness .agents/skills/validate-harness && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "validate-harness" agent skill from https://github.com/ruvnet/metaharness/tree/main/.claude-plugin/skills/validate-harness into .agents/skills/validate-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "validate-harness", 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 ruvnet/metaharness --skill validate-harness -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ruvnet/metaharness validate-harness --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ruvnet/metaharness.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude-plugin/skills/validate-harness .cursor/skills/validate-harness && 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 "validate-harness" agent skill from https://github.com/ruvnet/metaharness/tree/main/.claude-plugin/skills/validate-harness into .cursor/skills/validate-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "validate-harness", 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/ruvnet/metaharness.git --path .claude-plugin/skills/validate-harness--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 ruvnet/metaharness --skill validate-harness -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ruvnet/metaharness validate-harness --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ruvnet/metaharness.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude-plugin/skills/validate-harness .gemini/skills/validate-harness && 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 "validate-harness" agent skill from https://github.com/ruvnet/metaharness/tree/main/.claude-plugin/skills/validate-harness into .gemini/skills/validate-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "validate-harness", 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 ruvnet/metaharness validate-harnessInstalls 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 ruvnet/metaharness --skill validate-harness -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ruvnet/metaharness.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude-plugin/skills/validate-harness .github/skills/validate-harness && 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 "validate-harness" agent skill from https://github.com/ruvnet/metaharness/tree/main/.claude-plugin/skills/validate-harness into .github/skills/validate-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "validate-harness", 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 ruvnet/metaharness --skill validate-harness -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ruvnet/metaharness validate-harness --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ruvnet/metaharness.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude-plugin/skills/validate-harness .opencode/skills/validate-harness && 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 "validate-harness" agent skill from https://github.com/ruvnet/metaharness/tree/main/.claude-plugin/skills/validate-harness into .opencode/skills/validate-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "validate-harness", 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
validate-harness- GitHub stars
- 690
- Token cost
- ~372 tokens
- SKILL.md length
- 126 words
- Files
- 1
- Skills in repo
- 14
- Repo updated
- First seen
- Licence
- MIT
At a glance
Release-readiness umbrella check for a scaffolded harness — runs doctor, witness verify, hardcoded-path scan, MCP server config, and GCP Secret Manager validation in one shot.
- Tasks that involve Project scaffolding
- SKILL.md covers What it checks, Usage from Codex, Equivalent CLI and Why this exists
- Calls gcloud and node; needs NPM_TOKEN
- Tasks that involve Feature launches and release readiness
What it does
Validate Harness is an agent skill from ruvnet/metaharness. Release-readiness umbrella check for a scaffolded harness — runs doctor, witness verify, hardcoded-path scan, MCP server config, and GCP Secret Manager validation in one shot. Exits non-zero if any sub-check fails.
Its SKILL.md is about 370 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Product & Project Management, covering Project scaffolding, Feature launches and release readiness and MCP servers. It works with Model Context Protocol and Google Cloud. The repository describes itself as: 🛠️ The meta-harness for AI agents — scaffold your own focused, branded agent harness with its own npx CLI, MCP server, memory, learning loop, and witness-signed releases. Works… The licence is MIT.
When your agent uses it
- Tasks that involve Project scaffolding
- Tasks that involve Feature launches and release readiness
- Tasks that involve MCP servers
Example prompts
- “/validate-harness”
Requirements
- A credential in NPM_TOKEN
What it can do on your machine
Read from SKILL.md and the folder at commit ea287d6. 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
Shell commands in SKILL.md call:
gcloudnode
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use gcloud, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
NPM_TOKEN
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Validate Harness loads about 372 tokens when it runs. Until then it costs about 58 tokens; SKILL.md has 126 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
The full file from ruvnet/metaharness at commit ea287d6, republished under its MIT licence (© ruvnet). 126 words, ~372 tokens.
Download SKILL.mdSave it as
.claude/skills/validate-harness/SKILL.md (or your agent's skills folder).- name
- validate-harness
- description
- Release-readiness umbrella check for a scaffolded harness — runs doctor, witness verify, hardcoded-path scan, MCP server config, and GCP Secret Manager validation in one shot. Exits non-zero if any sub-check fails.
validate-harness
Codex skill that runs the 5 release-readiness gates from
harness validate.
What it checks
| # | Check | What it does |
|---|---|---|
| 1 | doctor | File shape + manifest sha256 + at-least-one host artifact |
| 2 | verify | Witness manifest signature (Ed25519) — skipped if no witness yet |
| 3 | path-guard | Scans your TS/JS/Rust files for hardcoded /tmp/, C:\, /Users/, /home/ — the original Windows /tmp bug regression class |
| 4 | mcp | .mcp/servers.json entries have name + command |
| 5 | secrets | gcloud auth list + project + NPM_TOKEN exist in GCP Secret Manager |
Each check reports PASS / FAIL / WARN with a one-line detail. Exits 1 if any FAIL.
Usage from Codex
/validate-harness
/validate-harness path=./my-harness
/validate-harness path=./my-harness skip_gcp=true
/validate-harness secret=NPM_TOKEN_DEVEquivalent CLI
harness validate ./my-harness --skip-gcp --secret=NPM_TOKEN_DEVWhy this exists
Before iter 20, you needed to remember to run harness doctor, harness verify, harness secrets check, and node scripts/path-guard.mjs separately. This is the single release-readiness gate.
© ruvnet, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude-plugin/skills/validate-harness of ruvnet/metaharness.
Open the folder on GitHubat commit ea287d6
Compare with similar skills
Validate Harness 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 |
|---|---|---|---|---|---|---|
| Validate Harness this skillruvnet/metaharness | 690 | — | ~372 | Automated safety check: Pass | MIT | |
| Azsdk Common SDK ReleaseAzure/azure-sdk-for-android | 121 | — | ~478 | Automated safety check: Pass | MIT | |
| Chatgpt AppsHaohao-end/openagent | 807 | 1 repos | ~4.9k | Automated safety check: Pass | Apache-2.0 | |
| MCP Scaffoldtimothywarner-org/claude-code | 224 | — | ~940 | Automated safety check: Pass | MIT | |
| Jira Natural Language Interfacejjmartres/opencode | 133 | 3 repos | ~1.7k | Automated safety check: Pass | MIT | |
| AI Bomcdxgen/cdxgen | 1.1k | — | ~2.5k | Automated safety check: Pass | Apache-2.0 |
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Questions about Validate Harness
What does Validate Harness do?
Release-readiness umbrella check for a scaffolded harness — runs doctor, witness verify, hardcoded-path scan, MCP server config, and GCP Secret Manager validation in one shot. Validate Harness is an agent skill from ruvnet/metaharness. Release-readiness umbrella check for a scaffolded harness — runs doctor, witness verify, hardcoded-path scan, MCP server config, and GCP Secret Manager validation in one shot.
When should I use Validate Harness?
Validate Harness fits situations like: tasks that involve Project scaffolding; tasks that involve Feature launches and release readiness; tasks that involve MCP servers.
How do I install Validate Harness in Claude Code?
Run `npx skills add ruvnet/metaharness --skill validate-harness -a claude-code`. Or copy the skill folder (.claude-plugin/skills/validate-harness in ruvnet/metaharness) into .claude/skills/validate-harness in your project. Claude Code loads it when a task matches its description.
How do I install Validate Harness in Codex?
Run `npx skills add ruvnet/metaharness --skill validate-harness -a codex`. Or copy the skill folder (.claude-plugin/skills/validate-harness in ruvnet/metaharness) into .agents/skills/validate-harness in your project. Codex loads it when a task matches its description.
Can I use Validate Harness 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 ruvnet/metaharness --skill validate-harness -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/validate-harness, .gemini/skills/validate-harness, .github/skills/validate-harness and .opencode/skills/validate-harness in your project.
What does Validate Harness need to run?
Going by SKILL.md and its folder, Validate Harness needs the command-line tools its instructions call (gcloud and node) and credentials named NPM_TOKEN. Our summary lists: A credential in NPM_TOKEN.
Does Validate Harness 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 Validate Harness 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 Validate Harness use?
Validate Harness is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Validate Harness use?
About 372 tokens (SKILL.md is roughly 1.5k 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 Validate Harness?
Skills that share tags, products or a category with Validate Harness: Azsdk Common SDK Release (Azure/azure-sdk-for-android, 121 stars), Chatgpt Apps (Haohao-end/openagent, 807 stars), MCP Scaffold (timothywarner-org/claude-code, 224 stars) and Jira Natural Language Interface (jjmartres/opencode, 133 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Validate Harness?
ruvnet (a GitHub user) maintains it in ruvnet/metaharness, which has 690 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on October 7, 2026.
Source: ruvnet/metaharness on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.