Validate Harness

Validate Harness is a Quality skill for Claude Code, published by ruvnet in metaharness.

609 stars72 forkson ruvnet/metaharnessAdded 2026/08/25+2% in starsRepository updated 2026/08/24

agent-harnessagent-harness-generatoragent-scaffoldingagentic-aiagentic-frameworkautonomous-agentsclaude-codecodexcreate-agent-harnesshermes-agentmcpmcp-servermulti-agentopenai-codexopenclawpi-devrvmsandboxingscaffoldscaffolding

Install in seconds

Install Validate Harness

Copy Validate Harness into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/ruvnet/metaharness/tree/main/.claude-plugin/skills/validate-harness ~/.claude/skills/validate-harness

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/ruvnet/metaharness.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: .claude-plugin/skills/validate-harness/SKILL.md in ruvnet/metaharness
Installs to: ~/.claude/skills/validate-harness
Collection: One of 16 skills cataloged from this repository
Category: Quality — 1354 skills

What Validate Harness does

Validate Harness runs release-readiness checks for a scaffolded harness in one command. Use it to verify file shape, signatures, path safety, MCP config, and GCP secrets before release.

Validate Harness is cataloged under Quality on DirSkills. Validate Harness comes from a repository tagged agent-harness, agent-harness-generator, agent-scaffolding, agentic-ai and agentic-framework.

Documentation

README

Excerpt

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

This is the opening of the README. Read the full README on GitHub.

Commands Validate Harness provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/validate-harness

Frequently asked about Validate Harness

What else does ruvnet publish alongside Validate Harness?
Validate Harness is one of 16 skills that DirSkills catalogs from ruvnet/metaharness, the repository it ships in. Its siblings there include Compare Harnesses, Create Harness and Darwin Mode. Each one is a separate skill with its own page in this directory, installs the same way Validate Harness does, and is maintained by ruvnet in that same repository. The rest of the collection is listed on the ruvnet/metaharness page.
How does Validate Harness compare to other Quality skills?
Validate Harness ranks #1124 by stars among the 1354 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Validate Harness against them. Open each page to compare what they document and how they install.