Cloud Cost Optimization
wshobson/agents
Cuts cloud spend across AWS, Azure, GCP and OCI with cost tagging, rightsizing, commitment and spot pricing models, and architecture changes.
A skill your agent uses when AWS account の IAM API が MFA 必須 policy で弾かれて、 sts:GetCallerIdentity は通るのに iam: が InvalidClientTokenId で拒否されるとき、 または FIDO2 passkey で MFA が CLI から使えないとき。
Install AWS Vault Mfa Iam
$ npx skills add mizchi/skills --skill aws-vault-mfa-iam -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mizchi/skills aws-vault-mfa-iam --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/mizchi/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/aws-vault-mfa-iam .claude/skills/aws-vault-mfa-iam && 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 "aws-vault-mfa-iam" agent skill from https://github.com/mizchi/skills/tree/main/aws-vault-mfa-iam into .claude/skills/aws-vault-mfa-iam/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aws-vault-mfa-iam", 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/mizchi/skills/tree/main/aws-vault-mfa-iamType 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 mizchi/skills --skill aws-vault-mfa-iam -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mizchi/skills aws-vault-mfa-iam --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/aws-vault-mfa-iam .agents/skills/aws-vault-mfa-iam && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "aws-vault-mfa-iam" agent skill from https://github.com/mizchi/skills/tree/main/aws-vault-mfa-iam into .agents/skills/aws-vault-mfa-iam/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aws-vault-mfa-iam", 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 mizchi/skills --skill aws-vault-mfa-iam -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mizchi/skills aws-vault-mfa-iam --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/aws-vault-mfa-iam .cursor/skills/aws-vault-mfa-iam && 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 "aws-vault-mfa-iam" agent skill from https://github.com/mizchi/skills/tree/main/aws-vault-mfa-iam into .cursor/skills/aws-vault-mfa-iam/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aws-vault-mfa-iam", 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/mizchi/skills.git --path aws-vault-mfa-iam--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 mizchi/skills --skill aws-vault-mfa-iam -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mizchi/skills aws-vault-mfa-iam --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/aws-vault-mfa-iam .gemini/skills/aws-vault-mfa-iam && 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 "aws-vault-mfa-iam" agent skill from https://github.com/mizchi/skills/tree/main/aws-vault-mfa-iam into .gemini/skills/aws-vault-mfa-iam/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aws-vault-mfa-iam", 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 mizchi/skills aws-vault-mfa-iamInstalls 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 mizchi/skills --skill aws-vault-mfa-iam -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/aws-vault-mfa-iam .github/skills/aws-vault-mfa-iam && 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 "aws-vault-mfa-iam" agent skill from https://github.com/mizchi/skills/tree/main/aws-vault-mfa-iam into .github/skills/aws-vault-mfa-iam/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aws-vault-mfa-iam", 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 mizchi/skills --skill aws-vault-mfa-iam -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mizchi/skills aws-vault-mfa-iam --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mizchi/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/aws-vault-mfa-iam .opencode/skills/aws-vault-mfa-iam && 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 "aws-vault-mfa-iam" agent skill from https://github.com/mizchi/skills/tree/main/aws-vault-mfa-iam into .opencode/skills/aws-vault-mfa-iam/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aws-vault-mfa-iam", 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
aws-vault-mfa-iam- GitHub stars
- 360
- Token cost
- ~521 tokens
- SKILL.md length
- 174 words
- Files
- 2
- Skills in repo
- 69
- Repo updated
- First seen
- Licence
- None found
At a glance
A skill your agent uses when AWS account の IAM API が MFA 必須 policy で弾かれて、 sts:GetCallerIdentity は通るのに iam: が InvalidClientTokenId で拒否されるとき、 または FIDO2 passkey で MFA が CLI から使えないとき。
- Works in 4 steps: AWS Console で virtual MFA device を登録 → ~/.aws/config の profile に mfa_serial を追加 → session を一度 clear → …
- DevOps & Cloud work in your project
- SKILL.md covers 症状, 原因, 解決手順 and 罠, plus 1 more section
- Calls aws; reaches us-east-1.console.aws.amazon.com
What it does
AWS Vault Mfa Iam is an agent skill from mizchi/skills. Use when AWS account の IAM API が MFA 必須 policy で弾かれて、 sts:GetCallerIdentity は通るのに iam: が InvalidClientTokenId で拒否されるとき、 または FIDO2 passkey で MFA が CLI から使えないとき。 aws-vault / aws-cli / MFA / passkey 関連で「アクセス拒否」 「token expired」 「IAM 操作のみ失敗」 等の症状から起動 (user が aws-vault を名指しでなくても OK)。
Its SKILL.md is about 520 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `README.md`).
It sits in DevOps & Cloud. It works with Amazon Web Services. The repository describes itself as: Agent skills by mizchi, distributed via APM.
When your agent uses it
- DevOps & Cloud work in your project
Example prompts
- “/aws-vault-mfa-iam”
Workflow steps
4 steps, taken from the step headings in SKILL.md.
- AWS Console で virtual MFA device を登録
- ~/.aws/config の profile に mfa_serial を追加
- session を一度 clear
- exec で MFA code 入力
What it can do on your machine
Read from SKILL.md and the folder at commit 62f5808. 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:
aws
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
us-east-1.console.aws.amazon.com
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
AWS Vault Mfa Iam loads about 521 tokens when it runs. Until then it costs about 76 tokens; SKILL.md has 174 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 174 words (~521 tokens).
“aws-vault exec -- aws iam list-roles が次のエラーで停止:”
- name
- aws-vault-mfa-iam
Files
SKILL.md and 1 other file in aws-vault-mfa-iam of mizchi/skills.
- SKILL.md
- README.md
Open the folder on GitHubat commit 62f5808
Compare with similar skills
AWS Vault Mfa Iam 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 |
|---|---|---|---|---|---|---|
| AWS Vault Mfa Iam this skillmizchi/skills | 360 | — | ~521 | Automated safety check: Pass | None | |
| Cloud Cost Optimizationwshobson/agents | 40k | 14 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Review Docshashicorp/terraform-provider-aws | 11k | — | ~1.3k | Automated safety check: Pass | MPL-2.0 | |
| AWS Cdk Developmentzxkane/aws-skills | 367 | 2 repos | ~2.5k | Automated safety check: Pass | MIT | |
| Senior DevOps Toolkitmaslennikov-ig/claude-code-orchestrator-kit | 260 | 6 repos | ~1.1k | Automated safety check: Notes | Custom licence | |
| Terravision Cloud Diagramspatrickchugh/terravision | 1.6k | — | ~5.6k | Automated safety check: Notes | AGPL-3.0-only |
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Questions about AWS Vault Mfa Iam
What does AWS Vault Mfa Iam do?
A skill your agent uses when AWS account の IAM API が MFA 必須 policy で弾かれて、 sts:GetCallerIdentity は通るのに iam: が InvalidClientTokenId で拒否されるとき、 または FIDO2 passkey で MFA が CLI から使えないとき。. AWS Vault Mfa Iam is an agent skill from mizchi/skills.
When should I use AWS Vault Mfa Iam?
AWS Vault Mfa Iam fits situations like: devOps & Cloud work in your project.
How do I install AWS Vault Mfa Iam in Claude Code?
Run `npx skills add mizchi/skills --skill aws-vault-mfa-iam -a claude-code`. Or copy the skill folder (aws-vault-mfa-iam in mizchi/skills) into .claude/skills/aws-vault-mfa-iam in your project. Claude Code loads it when a task matches its description.
How do I install AWS Vault Mfa Iam in Codex?
Run `npx skills add mizchi/skills --skill aws-vault-mfa-iam -a codex`. Or copy the skill folder (aws-vault-mfa-iam in mizchi/skills) into .agents/skills/aws-vault-mfa-iam in your project. Codex loads it when a task matches its description.
Can I use AWS Vault Mfa Iam 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 mizchi/skills --skill aws-vault-mfa-iam -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/aws-vault-mfa-iam, .gemini/skills/aws-vault-mfa-iam, .github/skills/aws-vault-mfa-iam and .opencode/skills/aws-vault-mfa-iam in your project.
What does AWS Vault Mfa Iam need to run?
Going by SKILL.md and its folder, AWS Vault Mfa Iam needs the command-line tools its instructions call (aws).
Does AWS Vault Mfa Iam access the network?
SKILL.md names 1 domain. In commands or code: us-east-1.console.aws.amazon.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Is AWS Vault Mfa Iam 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 AWS Vault Mfa Iam use?
No licence was found for AWS Vault Mfa Iam or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does AWS Vault Mfa Iam use?
About 521 tokens (SKILL.md is roughly 2.1k 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 AWS Vault Mfa Iam?
Skills that share tags, products or a category with AWS Vault Mfa Iam: Cloud Cost Optimization (wshobson/agents, 40k stars), Review Docs (hashicorp/terraform-provider-aws, 11k stars), AWS Cdk Development (zxkane/aws-skills, 367 stars) and Senior DevOps Toolkit (maslennikov-ig/claude-code-orchestrator-kit, 260 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains AWS Vault Mfa Iam?
mizchi (a GitHub user) maintains it in mizchi/skills, which has 360 GitHub stars. The repository holds 69 skills in this directory. The repository was last updated on October 2, 2026.
Source: mizchi/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.