CodexBar Live QA
steipete/CodexBar
Runs live QA for the CodexBar app: provider usage matrix checks through its packaged CLI, config validation and menu checks, with 1Password-backed credentials handled safely.
Reproduce and measure a Mastra Code runtime bug against a real model by driving the built TUI headlessly in tmux while every layer (network, provider stream, run engine, TUI) appends timestamped…
Install Live Mastracode Instrumentation
$ npx skills add mastra-ai/mastra --skill live-mastracode-instrumentation -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mastra-ai/mastra live-mastracode-instrumentation --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/mastra-ai/mastra.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/live-mastracode-instrumentation .claude/skills/live-mastracode-instrumentation && 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 "live-mastracode-instrumentation" agent skill from https://github.com/mastra-ai/mastra/tree/main/.claude/skills/live-mastracode-instrumentation into .claude/skills/live-mastracode-instrumentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "live-mastracode-instrumentation", 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/mastra-ai/mastra/tree/main/.claude/skills/live-mastracode-instrumentationType 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 mastra-ai/mastra --skill live-mastracode-instrumentation -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mastra-ai/mastra live-mastracode-instrumentation --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mastra-ai/mastra.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/live-mastracode-instrumentation .agents/skills/live-mastracode-instrumentation && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "live-mastracode-instrumentation" agent skill from https://github.com/mastra-ai/mastra/tree/main/.claude/skills/live-mastracode-instrumentation into .agents/skills/live-mastracode-instrumentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "live-mastracode-instrumentation", 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 mastra-ai/mastra --skill live-mastracode-instrumentation -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mastra-ai/mastra live-mastracode-instrumentation --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mastra-ai/mastra.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/live-mastracode-instrumentation .cursor/skills/live-mastracode-instrumentation && 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 "live-mastracode-instrumentation" agent skill from https://github.com/mastra-ai/mastra/tree/main/.claude/skills/live-mastracode-instrumentation into .cursor/skills/live-mastracode-instrumentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "live-mastracode-instrumentation", 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/mastra-ai/mastra.git --path .claude/skills/live-mastracode-instrumentation--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 mastra-ai/mastra --skill live-mastracode-instrumentation -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mastra-ai/mastra live-mastracode-instrumentation --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mastra-ai/mastra.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/live-mastracode-instrumentation .gemini/skills/live-mastracode-instrumentation && 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 "live-mastracode-instrumentation" agent skill from https://github.com/mastra-ai/mastra/tree/main/.claude/skills/live-mastracode-instrumentation into .gemini/skills/live-mastracode-instrumentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "live-mastracode-instrumentation", 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 mastra-ai/mastra live-mastracode-instrumentationInstalls 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 mastra-ai/mastra --skill live-mastracode-instrumentation -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mastra-ai/mastra.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/live-mastracode-instrumentation .github/skills/live-mastracode-instrumentation && 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 "live-mastracode-instrumentation" agent skill from https://github.com/mastra-ai/mastra/tree/main/.claude/skills/live-mastracode-instrumentation into .github/skills/live-mastracode-instrumentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "live-mastracode-instrumentation", 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 mastra-ai/mastra --skill live-mastracode-instrumentation -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mastra-ai/mastra live-mastracode-instrumentation --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mastra-ai/mastra.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/live-mastracode-instrumentation .opencode/skills/live-mastracode-instrumentation && 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 "live-mastracode-instrumentation" agent skill from https://github.com/mastra-ai/mastra/tree/main/.claude/skills/live-mastracode-instrumentation into .opencode/skills/live-mastracode-instrumentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "live-mastracode-instrumentation", 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
live-mastracode-instrumentation- GitHub stars
- 29k
- Token cost
- ~2k tokens
- SKILL.md length
- 726 words
- Files
- 1
- Skills in repo
- 44
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Reproduce and measure a Mastra Code runtime bug against a real model by driving the built TUI headlessly in tmux while every layer (network, provider stream, run engine, TUI) appends timestamped…
- Works in 5 steps: Add temporary diagnostics → Build and verify the instrumentation… → Drive the TUI in tmux → …
- A bug depends on real provider timing
- SKILL.md covers Cost and consent, 1. Add temporary diagnostics, 2. Build and verify the… and 3. Drive the TUI in tmux, plus 2 more sections
- Calls pnpm, rg and git
What it does
Live Mastracode Instrumentation is an agent skill from mastra-ai/mastra. Reproduce and measure a Mastra Code runtime bug against a real model by driving the built TUI headlessly in tmux while every layer (network, provider stream, run engine, TUI) appends timestamped JSONL. Use when a bug depends on real provider timing, streaming order, or event flow that mocked tests and fixtures may not reproduce — e.g. wrong token rates, flicker, stuck status, ordering races, or "only happens sometimes with a real model".
Its SKILL.md is about 2k 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 Testing & QA. It works with Mastra and tmux. The repository describes itself as: Mastra is the modern TypeScript framework for AI-powered applications and agents.
When your agent uses it
- A bug depends on real provider timing
- Streaming order
- Event flow that mocked tests and fixtures may not reproduce — e.g
Example prompts
- “only happens sometimes with a real model”
- “/live-mastracode-instrumentation”
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- Add temporary diagnostics
- Build and verify the instrumentation shipped
- Drive the TUI in tmux
- Analyze per step
- Clean up
What it can do on your machine
Read from SKILL.md and the folder at commit b98829a. 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:
pnpmrggit
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use pnpm and git, which can reach the network depending on how they are called.
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
Live Mastracode Instrumentation loads about 2k tokens when it runs. Until then it costs about 118 tokens; SKILL.md has 726 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 726 words (~1,966 tokens).
“Run the real TUI against a real model, have an agent type the prompts, and log timestamps at each layer. Comparing the layers step by step shows where timing or ordering goes wrong: at the provider, in the network wrapper…”
- name
- live-mastracode-instrumentation
Files
Just SKILL.md in .claude/skills/live-mastracode-instrumentation of mastra-ai/mastra.
Open the folder on GitHubat commit b98829a
Compare with similar skills
Live Mastracode Instrumentation 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 |
|---|---|---|---|---|---|---|
| Live Mastracode Instrumentation this skillmastra-ai/mastra | 29k | — | ~2k | Automated safety check: Pass | Custom licence | |
| CodexBar Live QAsteipete/CodexBar | 22k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Codex Plugin QAcode-yeongyu/oh-my-openagent | 70k | — | ~1.9k | Automated safety check: Pass | Custom licence | |
| OpenCode QA Toolkitcode-yeongyu/oh-my-openagent | 70k | — | ~2.9k | Automated safety check: Pass | Custom licence | |
| Drive MiMo CodeXiaomiMiMo/MiMo-Code | 14k | — | ~3.9k | Automated safety check: Pass | MIT | |
| Senpi Agent QA Harnesscode-yeongyu/senpi | 474 | — | ~2.7k | Automated safety check: Notes | MIT |
Similar skills
Codex Plugin QA
code-yeongyu/oh-my-openagent
Tests the omo Codex plugin in an isolated CODEX_HOME with a local mock model, proving hooks fired through app-server notifications without touching ~/.codex.
OpenCode QA Toolkit
code-yeongyu/oh-my-openagent
Tests the opencode coding agent itself: its CLI, server, plugin hooks and events, the terminal UI under tmux, and its SQLite session database, using tested helper scripts.
Drive MiMo Code
XiaomiMiMo/MiMo-Code
Lets one MiMoCode process drive another, headless with JSON events or interactively through tmux, to test behavior and visual regressions with parseable evidence.
Senpi Agent QA Harness
code-yeongyu/senpi
Checks changes to the senpi coding agent by driving the real CLI from source in an isolated sandbox, over RPC, terminal UI, mock model and CLI smoke channels.
tmux Real User Testing
QwenLM/qwen-code
Drives Qwen Code in a real tmux session the way a user would and saves a readable step-by-step transcript of each screen for maintainers to review.
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Related
Categories
Questions about Live Mastracode Instrumentation
What does Live Mastracode Instrumentation do?
Reproduce and measure a Mastra Code runtime bug against a real model by driving the built TUI headlessly in tmux while every layer (network, provider stream, run engine, TUI) appends timestamped…. Live Mastracode Instrumentation is an agent skill from mastra-ai/mastra. Reproduce and measure a Mastra Code runtime bug against a real model by driving the built TUI headlessly in tmux while every layer (network, provider stream, run engine, TUI) appends timestamped JSONL.
When should I use Live Mastracode Instrumentation?
Live Mastracode Instrumentation fits situations like: A bug depends on real provider timing; streaming order; event flow that mocked tests and fixtures may not reproduce — e.g.
How do I install Live Mastracode Instrumentation in Claude Code?
Run `npx skills add mastra-ai/mastra --skill live-mastracode-instrumentation -a claude-code`. Or copy the skill folder (.claude/skills/live-mastracode-instrumentation in mastra-ai/mastra) into .claude/skills/live-mastracode-instrumentation in your project. Claude Code loads it when a task matches its description.
How do I install Live Mastracode Instrumentation in Codex?
Run `npx skills add mastra-ai/mastra --skill live-mastracode-instrumentation -a codex`. Or copy the skill folder (.claude/skills/live-mastracode-instrumentation in mastra-ai/mastra) into .agents/skills/live-mastracode-instrumentation in your project. Codex loads it when a task matches its description.
Can I use Live Mastracode Instrumentation 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 mastra-ai/mastra --skill live-mastracode-instrumentation -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/live-mastracode-instrumentation, .gemini/skills/live-mastracode-instrumentation, .github/skills/live-mastracode-instrumentation and .opencode/skills/live-mastracode-instrumentation in your project.
What does Live Mastracode Instrumentation need to run?
Going by SKILL.md and its folder, Live Mastracode Instrumentation needs the command-line tools its instructions call (pnpm, rg and git).
Does Live Mastracode Instrumentation access the network?
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.
Is Live Mastracode Instrumentation 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 Live Mastracode Instrumentation use?
Live Mastracode Instrumentation 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 Live Mastracode Instrumentation use?
About 2k tokens (SKILL.md is roughly 7.9k 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 Live Mastracode Instrumentation?
Skills that share tags, products or a category with Live Mastracode Instrumentation: CodexBar Live QA (steipete/CodexBar, 22k stars), Codex Plugin QA (code-yeongyu/oh-my-openagent, 70k stars), OpenCode QA Toolkit (code-yeongyu/oh-my-openagent, 70k stars) and Drive MiMo Code (XiaomiMiMo/MiMo-Code, 14k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Live Mastracode Instrumentation?
mastra-ai (a GitHub organization) maintains it in mastra-ai/mastra, which has 28,698 GitHub stars. The repository holds 44 skills in this directory. The repository was last updated on October 11, 2026.
Source: mastra-ai/mastra on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.