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.
Use Claudia's identity, persistent local memory, relationship context, project routing, judgment rules, and strategic operating style.
Install Claudia Core
$ npx skills add kbanc85/claudia --skill claudia-core -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install kbanc85/claudia claudia-core --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/kbanc85/claudia.git skills-src && mkdir -p .claude/skills && cp -r skills-src/codex/skills/claudia-core .claude/skills/claudia-core && 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 "claudia-core" agent skill from https://github.com/kbanc85/claudia/tree/main/codex/skills/claudia-core into .claude/skills/claudia-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claudia-core", 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/kbanc85/claudia/tree/main/codex/skills/claudia-coreType 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 kbanc85/claudia --skill claudia-core -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install kbanc85/claudia claudia-core --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kbanc85/claudia.git skills-src && mkdir -p .agents/skills && cp -r skills-src/codex/skills/claudia-core .agents/skills/claudia-core && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "claudia-core" agent skill from https://github.com/kbanc85/claudia/tree/main/codex/skills/claudia-core into .agents/skills/claudia-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claudia-core", 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 kbanc85/claudia --skill claudia-core -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install kbanc85/claudia claudia-core --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kbanc85/claudia.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/codex/skills/claudia-core .cursor/skills/claudia-core && 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 "claudia-core" agent skill from https://github.com/kbanc85/claudia/tree/main/codex/skills/claudia-core into .cursor/skills/claudia-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claudia-core", 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/kbanc85/claudia.git --path codex/skills/claudia-core--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 kbanc85/claudia --skill claudia-core -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install kbanc85/claudia claudia-core --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kbanc85/claudia.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/codex/skills/claudia-core .gemini/skills/claudia-core && 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 "claudia-core" agent skill from https://github.com/kbanc85/claudia/tree/main/codex/skills/claudia-core into .gemini/skills/claudia-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claudia-core", 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 kbanc85/claudia claudia-coreInstalls 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 kbanc85/claudia --skill claudia-core -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/kbanc85/claudia.git skills-src && mkdir -p .github/skills && cp -r skills-src/codex/skills/claudia-core .github/skills/claudia-core && 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 "claudia-core" agent skill from https://github.com/kbanc85/claudia/tree/main/codex/skills/claudia-core into .github/skills/claudia-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claudia-core", 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 kbanc85/claudia --skill claudia-core -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install kbanc85/claudia claudia-core --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kbanc85/claudia.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/codex/skills/claudia-core .opencode/skills/claudia-core && 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 "claudia-core" agent skill from https://github.com/kbanc85/claudia/tree/main/codex/skills/claudia-core into .opencode/skills/claudia-core/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claudia-core", 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
claudia-core- GitHub stars
- 296
- Token cost
- ~664 tokens
- SKILL.md length
- 339 words
- Files
- 1
- Skills in repo
- 37
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Use Claudia's identity, persistent local memory, relationship context, project routing, judgment rules, and strategic operating style.
- Works in 6 steps: Inside a Claudia workspace, refer to… → Read the identity and communication… → Check for context/me.md. If it is… → …
- Relationship-aware
- SKILL.md covers Start here, Claudia's operating stance, Codex-native behavior and Durable updates
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Claudia Core is an agent skill from kbanc85/claudia. Use Claudia's identity, persistent local memory, relationship context, project routing, judgment rules, and strategic operating style. Trigger for personal, relationship-aware, project-aware, planning, correspondence, meeting, review, or "as Claudia" work.
Its SKILL.md is about 660 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 Agent Workflows. The repository describes itself as: Terminal-based AI chief of staff. Remembers relationships, tracks commitments, helps you think strategically. Runs on Claude Code.
When your agent uses it
- Relationship-aware
- As Claudia work
Example prompts
- “as Claudia”
- “/claudia-core”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Inside a Claudia workspace, refer to yourself as Claudia. Do not introduce yourself as ChatGPT, Codex, or a generic assistant.
- Read the identity and communication sections of CLAUDE.md in the current Claudia workspace.
- Check for context/me.md. If it is missing, use the onboarding skill and complete the required first-run flow before substantive work.
- Call memory_briefing before deeper recall. Treat a successful response as the current session baseline.
- If the request concerns an established project, client, product, or venture, read project-router.md before locating or changing files.
- Read the smallest relevant files under context/, people/, or the routed workspace. Use memory_recall for focused historical recall.
What it can do on your machine
Read from SKILL.md and the folder at commit eb63cec. 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
Claudia Core loads about 664 tokens when it runs. Until then it costs about 67 tokens; SKILL.md has 339 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 339 words (~664 tokens).
“Bring Claudia's continuity and judgment into the current Codex session.”
- name
- claudia-core
Files
Just SKILL.md in codex/skills/claudia-core of kbanc85/claudia.
Open the folder on GitHubat commit eb63cec
Compare with similar skills
Claudia Core 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 |
|---|---|---|---|---|---|---|
| Claudia Core this skillkbanc85/claudia | 296 | — | ~664 | Automated safety check: Pass | Custom licence | |
| MCP Server Builderanthropics/skills | 180k | 63 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| Hook Development for Claude Code Pluginsanthropics/claude-plugins-official | 38k | 10 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 | 297k | 2 repos | ~5.1k | Automated safety check: Pass | MIT | |
| Skill CreatorAzure/azqr | 796 | 89 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 |
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Using Superpowers
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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
Executing Plans Inline
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.
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Related
Categories
Questions about Claudia Core
What does Claudia Core do?
Use Claudia's identity, persistent local memory, relationship context, project routing, judgment rules, and strategic operating style. Claudia Core is an agent skill from kbanc85/claudia. Use Claudia's identity, persistent local memory, relationship context, project routing, judgment rules, and strategic operating style.
When should I use Claudia Core?
Claudia Core fits situations like: relationship-aware; as Claudia work.
How do I install Claudia Core in Claude Code?
Run `npx skills add kbanc85/claudia --skill claudia-core -a claude-code`. Or copy the skill folder (codex/skills/claudia-core in kbanc85/claudia) into .claude/skills/claudia-core in your project. Claude Code loads it when a task matches its description.
How do I install Claudia Core in Codex?
Run `npx skills add kbanc85/claudia --skill claudia-core -a codex`. Or copy the skill folder (codex/skills/claudia-core in kbanc85/claudia) into .agents/skills/claudia-core in your project. Codex loads it when a task matches its description.
Can I use Claudia Core 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 kbanc85/claudia --skill claudia-core -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/claudia-core, .gemini/skills/claudia-core, .github/skills/claudia-core and .opencode/skills/claudia-core in your project.
What does Claudia Core need to run?
SKILL.md names no scripts, command-line tools or credentials: Claudia Core is instructions for the agent only.
Does Claudia Core 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 Claudia Core 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 Claudia Core use?
Claudia Core 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 Claudia Core use?
About 664 tokens (SKILL.md is roughly 2.7k 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 Claudia Core?
Skills that share tags, products or a category with Claudia Core: 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, 297k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Claudia Core?
kbanc85 (a GitHub user) maintains it in kbanc85/claudia, which has 296 GitHub stars. The repository holds 37 skills in this directory. The repository was last updated on September 4, 2026.
Source: kbanc85/claudia on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.