Harness Agent Team Designer
revfactory/harness
Designs a project-specific agent harness: defines specialist agents, writes the skills they follow, picks an execution mode and model for each, and keeps the setup maintained.
Guide and tools for creating coordinated multi-agent workflows (skills) from first principles.
$ npx skills add nwjs/chromium.src --skill multi-agent-skill-creator -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install nwjs/chromium.src multi-agent-skill-creator --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/nwjs/chromium.src.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agents/skills/multi-agent-skill-creator .claude/skills/multi-agent-skill-creator && 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 "multi-agent-skill-creator" agent skill from https://github.com/nwjs/chromium.src/tree/main/agents/skills/multi-agent-skill-creator into .claude/skills/multi-agent-skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "multi-agent-skill-creator", 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/nwjs/chromium.src/tree/main/agents/skills/multi-agent-skill-creatorType 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 nwjs/chromium.src --skill multi-agent-skill-creator -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install nwjs/chromium.src multi-agent-skill-creator --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nwjs/chromium.src.git skills-src && mkdir -p .agents/skills && cp -r skills-src/agents/skills/multi-agent-skill-creator .agents/skills/multi-agent-skill-creator && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "multi-agent-skill-creator" agent skill from https://github.com/nwjs/chromium.src/tree/main/agents/skills/multi-agent-skill-creator into .agents/skills/multi-agent-skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "multi-agent-skill-creator", 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 nwjs/chromium.src --skill multi-agent-skill-creator -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install nwjs/chromium.src multi-agent-skill-creator --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nwjs/chromium.src.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/agents/skills/multi-agent-skill-creator .cursor/skills/multi-agent-skill-creator && 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 "multi-agent-skill-creator" agent skill from https://github.com/nwjs/chromium.src/tree/main/agents/skills/multi-agent-skill-creator into .cursor/skills/multi-agent-skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "multi-agent-skill-creator", 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/nwjs/chromium.src.git --path agents/skills/multi-agent-skill-creator--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 nwjs/chromium.src --skill multi-agent-skill-creator -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install nwjs/chromium.src multi-agent-skill-creator --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nwjs/chromium.src.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/agents/skills/multi-agent-skill-creator .gemini/skills/multi-agent-skill-creator && 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 "multi-agent-skill-creator" agent skill from https://github.com/nwjs/chromium.src/tree/main/agents/skills/multi-agent-skill-creator into .gemini/skills/multi-agent-skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "multi-agent-skill-creator", 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 nwjs/chromium.src multi-agent-skill-creatorInstalls 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 nwjs/chromium.src --skill multi-agent-skill-creator -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/nwjs/chromium.src.git skills-src && mkdir -p .github/skills && cp -r skills-src/agents/skills/multi-agent-skill-creator .github/skills/multi-agent-skill-creator && 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 "multi-agent-skill-creator" agent skill from https://github.com/nwjs/chromium.src/tree/main/agents/skills/multi-agent-skill-creator into .github/skills/multi-agent-skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "multi-agent-skill-creator", 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 nwjs/chromium.src --skill multi-agent-skill-creator -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install nwjs/chromium.src multi-agent-skill-creator --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nwjs/chromium.src.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/agents/skills/multi-agent-skill-creator .opencode/skills/multi-agent-skill-creator && 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 "multi-agent-skill-creator" agent skill from https://github.com/nwjs/chromium.src/tree/main/agents/skills/multi-agent-skill-creator into .opencode/skills/multi-agent-skill-creator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "multi-agent-skill-creator", 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.
multi-agent-skill-creatorGuide and tools for creating coordinated multi-agent workflows (skills) from first principles.
Multi Agent Skill Creator is an agent skill from nwjs/chromium.src. Guide and tools for creating coordinated multi-agent workflows (skills) from first principles.
Its SKILL.md is about 2.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 9 other files (for example `PRESUBMIT.py`, `README.md` and `run_presubmit.py`).
It sits in Agent Workflows, covering Skill authoring and Multi-agent orchestration. The repository describes itself as: Chromium codebase with NW.js modifications. Based on https://chromium.googlesource.com/chromium/src.git. The licence is BSD-3-Clause.
4 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit a9e8946. It shows what the files ask for, not the result of running them.
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.
Ships script files (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Hosts in commands or code, which the agent is likely to contact:
json-schema.orgFrom URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Multi Agent Skill Creator loads about 2.4k tokens when it runs. Until then it costs about 30 tokens; SKILL.md has 877 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.
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.
The full file from nwjs/chromium.src at commit a9e8946, republished under its BSD-3-Clause licence (© nwjs). 877 words, ~2,396 tokens.
.claude/skills/multi-agent-skill-creator/SKILL.md (or your agent's skills folder). This skill also uses 8 other files; get the full folder from GitHub.This skill guides the design, implementation, and verification of a multi-agent coordinated workflow (a "multi-agent skill") for a specific, repeatable task.
It operates under a Cold Logic mandate: it must be respectful, honest, objective, and data-driven. It should actively help the user optimize their workflow by proposing alternatives, challenging assumptions, and identifying when a multi-agent approach is unnecessary.
true for all
checklist items.The creation process runs through four stages:
graph TD
A[Stage 1: Feasibility & Discovery] --> B[Stage 2: Architecture Proposal]
B --> C[Stage 3: Artifact Generation]
C --> D[Stage 4: Validation Setup]Propose 2-3 design options for the multi-agent system. For each option, present a comparative analysis using the following metrics:
Example Table:
| Metric | Option A: Linear (Fast) | Option B: Loop (Rigorous) |
|---|---|---|
| Structure | Scoper -> Writer | Scoper -> Writer <-> Auditor |
| Context Efficiency | High (~70% reduction) | High (~60% reduction) |
| Token Overhead | Low (+20%) | Medium (+50% due to loops) |
| Wall-Time | Low (~1.5x) | Medium/High (2-3x) |
| Reliability | Moderate (No verification) | Very High (Checklist enforced) |
Action: Wait for the user to select or refine a proposal before proceeding.
Generate the directory structure and files for the new skill.
[new-skill-name]/
├── SKILL.md # Core protocol and stage definitions
├── README.md # High-level overview and verification docs
├── schema.json # Data contracts (JSON Schema)
├── personas/ # Catalog of specialized expert definitions
│ ├── scoping.json
│ ├── implementation.json
│ └── auditor.jsonpersonas/role.json){
"$schema": "../schema.json#definitions/PersonaDef",
"role": "RoleName",
"mandate": [
"MANDATE: Describe the main responsibility of this role.",
"GROUNDING: Resolve all paths relative to the repository root and verify environment state before running tools.",
"TONE: Zero Preamble. No conversational filler. Artifacts only."
],
"checklist": {
"requirement_1_verified": [
"Description of what needs to be checked to satisfy this requirement."
]
}
}schema.json)Provide a JSON schema defining ProjectSpec (inputs), StateBlock (workflow
state), and ReviewFeedback (auditor output). Use
https://json-schema.org/draft-07/schema# as the schema declaration.
Rule: The StateBlock definition MUST include fields for tracking loop
convergence:
stage_attempts: A map of stage name to integer attempt count.loop_counters: A map tracking consecutive feedback cycles between
implementation and review.SKILL.md)Generate a step-by-step execution protocol defining the state machine. The
generated SKILL.md MUST follow this skeleton structure:
# [Skill Name] Protocol
## Stages Overview
Define a Stage 0 for initial environment grounding, followed by your sequential execution stages.
- **Stage 0: Environment Grounding & Safety Verification**
- **Stage 1: [Stage Name]**
- **Stage 2: [Stage Name]**
...
---
## Stage 0: Environment Grounding & Safety Verification
1. **Verify Environment**: Discover and verify active repository root, current branch, and availability of required tools (e.g. git, python).
2. **Initialize State**: Create or read `state.json` (complying with `schema.json`). Initialize loop counters (`stage_attempts` set to 0).
3. **Transition**: Move to Stage 1.
## Stage 1: [Stage Name]
...
---
## Stage Handoff & Loop Limits
Define loop limits for feedback cycles (e.g., maximum 3 iterations for review loops before escalating to human). Track attempts using `state.json` loop counters.For complex workflows with detailed instructions, keeping all stage rules in a
single SKILL.md will lead to context bloat. To optimize context usage (based
on workflow best practices):
SKILL.md: The main SKILL.md should only contain the high-level
orchestration state machine, stage names, and routing logic.ROUTING.md: Create a ROUTING.md file to map stages to specific
personas and reference files.references/ Directory: Move detailed, stage-specific step-by-step
instructions into separate markdown files under a references/ directory
(e.g., references/stage1_scope.md).To ensure the new skill's artifacts remain consistent and functional, generate
validation and testing tools within the new skill's directory, utilizing the
templates in the templates/ directory:
PRESUBMIT.py: Use
templates/PRESUBMIT.py.template as a
base. This script runs static analysis on the new skill's files to verify
link integrity, reachability, and schema compliance.run_tests.py: Use
templates/run_tests.py.template as a
base. This script runs behavioral unit tests for the skill stages.run_presubmit.py: A helper script to run the presubmit checks
locally (you can adapt the run_presubmit.py from this
skill creator)..ruff.toml and
.style.mdformat (copied from this skill creator) to
ensure formatting consistency.SKILL.md to prevent infinite loops.© nwjs, BSD-3-Clause. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 8 other files in agents/skills/multi-agent-skill-creator of nwjs/chromium.src.
Open the folder on GitHubat commit a9e8946
Multi Agent Skill Creator 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 |
|---|---|---|---|---|---|---|
| Multi Agent Skill Creator this skillnwjs/chromium.src | 160 | — | ~2.4k | Automated safety check: Pass | BSD-3-Clause | |
| 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 | |
| Agent Team And Skill Builderxvirobotics/metabot | 991 | — | ~628 | Automated safety check: Notes | MIT | |
| Agent OrchestratorNeverSight/learn-skills.dev | 216 | 1 repos | ~1.4k | Automated safety check: Pass | None | |
| Skill CreatorAzure/azqr | 795 | 89 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 |
revfactory/harness
Designs a project-specific agent harness: defines specialist agents, writes the skills they follow, picks an execution mode and model for each, and keeps the setup maintained.
revfactory/harness
Collects feedback on how an agent harness performed, generalizes it, and updates the harness agents, skills and orchestrator along with a change-history table.
xvirobotics/metabot
Decides whether a request wants a full agent team, one agent, or one skill, then follows the matching flow file to generate it.
NeverSight/learn-skills.dev
Meta-agent skill for orchestrating complex tasks through autonomous sub-agents.
Azure/azqr
Create new skills, modify and improve existing skills, and measure skill performance.
diet103/claude-code-infrastructure-showcase
A guide to creating and managing Claude Code skills with auto-activation: skill-rules.json triggers, hooks, enforcement levels, YAML frontmatter and progressive disclosure.
nwjs/chromium.src
Extracts raw trace data from Perfetto traces, runs arbitrary SQL queries for custom follow-up analysis, and applies expert cognitive principles (Tiered Flow Analysis, Semantic Mismatch, Redundancy)…
nwjs/chromium.src
Autonomous multi-agent performance optimization loop for Chromium and V8.
nwjs/chromium.src
Automated Tracing & Performance Telemetry in Chromium using Perfetto and Telemetry benchmarks.
nwjs/chromium.src
Queries Chrome commit, version, release, and milestone metadata.
nwjs/chromium.src
Search and reference Chromium documentation from the local docs index, including design docs, APIs, and development guides.
nwjs/chromium.src
Diagnose Chromium GN dependency and include-visibility failures, including BUILD.gn deps/publicdeps, DEPS include rules, private headers, and circular dependencies.
Categories
Guide and tools for creating coordinated multi-agent workflows (skills) from first principles. src. Guide and tools for creating coordinated multi-agent workflows (skills) from first principles.
Multi Agent Skill Creator fits situations like: tasks that involve Skill authoring; tasks that involve Multi-agent orchestration.
Run `npx skills add nwjs/chromium.src --skill multi-agent-skill-creator -a claude-code`. Or copy the skill folder (agents/skills/multi-agent-skill-creator in nwjs/chromium.src) into .claude/skills/multi-agent-skill-creator in your project. Claude Code loads it when a task matches its description.
Run `npx skills add nwjs/chromium.src --skill multi-agent-skill-creator -a codex`. Or copy the skill folder (agents/skills/multi-agent-skill-creator in nwjs/chromium.src) into .agents/skills/multi-agent-skill-creator in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nwjs/chromium.src --skill multi-agent-skill-creator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/multi-agent-skill-creator, .gemini/skills/multi-agent-skill-creator, .github/skills/multi-agent-skill-creator and .opencode/skills/multi-agent-skill-creator in your project.
Going by SKILL.md and its folder, Multi Agent Skill Creator needs Python for the scripts in its folder. Our summary lists: Python 3.
SKILL.md names 1 domain. In commands or code: json-schema.org; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
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.
Multi Agent Skill Creator is published under the BSD-3-Clause licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 2.4k tokens (SKILL.md is roughly 9.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Multi Agent Skill Creator: Harness Agent Team Designer (revfactory/harness, 9.1k stars), Harness Evolution Feedback Loop (revfactory/harness, 9.1k stars), Agent Team And Skill Builder (xvirobotics/metabot, 991 stars) and Agent Orchestrator (NeverSight/learn-skills.dev, 216 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
nwjs (a GitHub organization) maintains it in nwjs/chromium.src, which has 160 GitHub stars. The repository holds 64 skills in this directory. The repository was last updated on October 3, 2026.
Source: nwjs/chromium.src on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.