MCP Server Builder
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
Multi-repo campaign coordinator. An agent skill from SethGammon/Citadel.
$ npx skills add SethGammon/Citadel --skill workspace -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install SethGammon/Citadel workspace --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/SethGammon/Citadel.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/workspace .claude/skills/workspace && 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 "workspace" agent skill from https://github.com/SethGammon/Citadel/tree/main/skills/workspace into .claude/skills/workspace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "workspace", 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/SethGammon/Citadel/tree/main/skills/workspaceType 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 SethGammon/Citadel --skill workspace -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install SethGammon/Citadel workspace --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/SethGammon/Citadel.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/workspace .agents/skills/workspace && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "workspace" agent skill from https://github.com/SethGammon/Citadel/tree/main/skills/workspace into .agents/skills/workspace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "workspace", 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 SethGammon/Citadel --skill workspace -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install SethGammon/Citadel workspace --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/SethGammon/Citadel.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/workspace .cursor/skills/workspace && 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 "workspace" agent skill from https://github.com/SethGammon/Citadel/tree/main/skills/workspace into .cursor/skills/workspace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "workspace", 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/SethGammon/Citadel.git --path skills/workspace--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 SethGammon/Citadel --skill workspace -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install SethGammon/Citadel workspace --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/SethGammon/Citadel.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/workspace .gemini/skills/workspace && 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 "workspace" agent skill from https://github.com/SethGammon/Citadel/tree/main/skills/workspace into .gemini/skills/workspace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "workspace", 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 SethGammon/Citadel workspaceInstalls 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 SethGammon/Citadel --skill workspace -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/SethGammon/Citadel.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/workspace .github/skills/workspace && 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 "workspace" agent skill from https://github.com/SethGammon/Citadel/tree/main/skills/workspace into .github/skills/workspace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "workspace", 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 SethGammon/Citadel --skill workspace -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install SethGammon/Citadel workspace --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/SethGammon/Citadel.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/workspace .opencode/skills/workspace && 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 "workspace" agent skill from https://github.com/SethGammon/Citadel/tree/main/skills/workspace into .opencode/skills/workspace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "workspace", 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.
workspaceMulti-repo campaign coordinator. An agent skill from SethGammon/Citadel.
Workspace is an agent skill from SethGammon/Citadel. Multi-repo campaign coordinator. Same lifecycle as fleet -- scope claims, discovery relay, wave-based execution -- but the unit of work is a repo, not a file. Coordinates campaigns across repositories with shared context.
Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `__benchmarks__/multi-repo-direction.md` and `__benchmarks__/no-repos-configured.md`).
It sits in Agent Workflows. The repository describes itself as: The operating layer for Claude Code + OpenAI Codex: persistent project memory, intent routing, safety hooks, cost telemetry, and parallel agent fleets. The licence is MIT.
5 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit e41ff1d. 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.
Shell commands in SKILL.md call:
nodegitFrom the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
From 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.
Workspace loads about 1.9k tokens when it runs. Until then it costs about 58 tokens; SKILL.md has 808 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 SethGammon/Citadel at commit e41ff1d, republished under its MIT licence (© SethGammon). 808 words, ~1,876 tokens.
.claude/skills/workspace/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.Do not use when:
/fleet or /archon).planning/workspace/session-{slug}.md — resume if status: active or needs-continueCLAUDE.md, check .planning/campaigns/ for active campaigns (avoid collisions)node .citadel/scripts/momentum-watch-start.cjs
node .citadel/scripts/momentum-read.cjsBreak the direction into repo-scoped work items (one campaign per repo per wave). Table format: # | Repo | Campaign Direction | Scope | Deps | Wave.
Rules: items with no deps → Wave 1; dependents → Wave 2+. Max 3 repo-campaigns per wave. Scope format: {repo}:{path}.
For each inter-wave dependency, specify the cross-repo contract: what the producer will produce, what the consumer expects, and where the contract lives (shared types package, OpenAPI spec, env var).
Create .planning/workspace/session-{slug}.md with frontmatter: version, id, status: active, started, completed_at: null, direction, repos (path + name + branch per repo), wave_count, current_wave: 1, campaigns_total, campaigns_complete: 0.
Body sections: Direction, Repos table (name/path/branch/status), Work Queue (table from Step 2), Cross-Repo Contracts (producer/consumer/contract/location), Wave Execution Log (per wave: status, campaigns, started, completed), Shared Context (discovery relay accumulation).
For each wave:
For each repo-campaign in this wave:
git checkout -b workspace/{slug}/{repo-name}/archon for complex (3+ phases), /fleet if parallelizable, /marshal or direct skill for simple (1-2 steps)momentum.json via node .citadel/scripts/momentum-read.cjs, inject as === PRIOR SESSION CONTEXT ===, skip if empty), cross-repo contracts, relevant CLAUDE.md sections from other reposExtract HANDOFF blocks, compress into cross-repo discovery brief, write persistent discovery records:
node .citadel/scripts/discovery-write.cjs \
--session {session-slug} --agent {repo-name}-{campaign-type} \
--wave {wave-number} --status {success|partial|failed} \
--scope "{repo-name}:{scope-path}" --handoff "{json-array}" \
--decisions "{json-array}" --files "{json-array}" --failures "{json-array}"Write workspace/briefs/wave{N}-{repo-name}.md for each completed campaign.
Also write workspace/briefs/wave{N}-cross-repo.md summarizing:
For each cross-repo contract: verify the producer created the expected output (file + export for types, route existence for endpoints). If verification fails, flag and do not proceed with consumers.
Mark completed campaigns, update wave status, write discovery relay, advance current_wave.
status: completed, completed_at: {ISO timestamp}node .citadel/scripts/momentum-synthesize.cjs.planning/workspace/ does not exist: Create it (and workspace/briefs/).{monorepo}:{package-path} as the scope identifier.Disclosure: "Running multi-repo campaign across [repos]. Changes committed to each repo independently." Reversibility: red — coordinates changes across multiple repositories; cross-repo commits are hard to revert in bulk. Trust gates:
active state on completion---HANDOFF---
- Workspace: {slug} -- {direction summary}
- Repos: {N} repos, {M} campaigns across {W} waves
- Results: {completed}/{total} campaigns succeeded
- Branches: {list branches ready for review}
- Merge order: {suggested order based on dependency graph}
- Unresolved: {any failed campaigns or broken contracts}
---© SethGammon, MIT. 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 2 other files in skills/workspace of SethGammon/Citadel.
Open the folder on GitHubat commit e41ff1d
Workspace 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 |
|---|---|---|---|---|---|---|
| Workspace this skillSethGammon/Citadel | 922 | — | ~1.9k | Automated safety check: Pass | MIT | |
| MCP Server Builderanthropics/skills | 180k | 64 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| Hook Development for Claude Code Pluginsanthropics/claude-plugins-official | 38k | 11 repos | ~4.1k | Automated safety check: Notes | Apache-2.0 | |
| Using Superpowersfarm-fe/farm | 5.6k | 35 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Executing Plans Inlineobra/superpowers | 296k | 2 repos | ~5.1k | Automated safety check: Pass | MIT | |
| Claude Code Agent Developmentanthropics/claude-plugins-official | 38k | 8 repos | ~2.8k | Automated safety check: Pass | Apache-2.0 |
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
anthropics/claude-plugins-official
Explains how to write Claude Code plugin hooks, both prompt-based checks and bash commands, for events such as PreToolUse, Stop and SessionStart.
farm-fe/farm
A skill your agent uses when starting any conversation - establishes how to find and use skills, requiring Skill tool invocation before ANY response including clarifying questions
obra/superpowers
Has the agent carry out an implementation plan itself, task by task in the current session, keeping a ledger, proving each step with a test and ending with one whole-branch review.
anthropics/claude-plugins-official
Explains how to write agents for Claude Code plugins: the markdown file with YAML frontmatter, trigger descriptions, model and color settings, and system prompt design.
Azure/azqr
Create new skills, modify and improve existing skills, and measure skill performance.
SethGammon/Citadel
Creates new skills from the user's repeating patterns. An agent skill from SethGammon/Citadel.
SethGammon/Citadel
Cross-drive storage audit and cleanup. An agent skill from SethGammon/Citadel.
SethGammon/Citadel
Bounded foreground repetition for the current session. An agent skill from SethGammon/Citadel.
SethGammon/Citadel
GitHub issue and PR investigator. An agent skill from SethGammon/Citadel.
SethGammon/Citadel
File sentinel that monitors the working directory for changes and marker comments, then auto-triggers appropriate skills.
SethGammon/Citadel
Autonomous multi-session campaign agent. An agent skill from SethGammon/Citadel.
Categories
Multi-repo campaign coordinator. An agent skill from SethGammon/Citadel. Workspace is an agent skill from SethGammon/Citadel. Multi-repo campaign coordinator.
Workspace fits situations like: agent Workflows work in your project.
Run `npx skills add SethGammon/Citadel --skill workspace -a claude-code`. Or copy the skill folder (skills/workspace in SethGammon/Citadel) into .claude/skills/workspace in your project. Claude Code loads it when a task matches its description.
Run `npx skills add SethGammon/Citadel --skill workspace -a codex`. Or copy the skill folder (skills/workspace in SethGammon/Citadel) into .agents/skills/workspace 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 SethGammon/Citadel --skill workspace -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/workspace, .gemini/skills/workspace, .github/skills/workspace and .opencode/skills/workspace in your project.
Going by SKILL.md and its folder, Workspace needs the command-line tools its instructions call (node and git).
SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. 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.
Workspace is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.9k tokens (SKILL.md is roughly 7.5k 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 Workspace: MCP Server Builder (anthropics/skills, 180k stars), Hook Development for Claude Code Plugins (anthropics/claude-plugins-official, 38k stars), Using Superpowers (farm-fe/farm, 5.6k stars) and Executing Plans Inline (obra/superpowers, 296k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
SethGammon (a GitHub user) maintains it in SethGammon/Citadel, which has 922 GitHub stars. The repository holds 48 skills in this directory. The repository was last updated on October 1, 2026.
Source: SethGammon/Citadel on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.