Exploratory Data Analysis
spacering-net/codeg
Perform comprehensive exploratory data analysis on scientific data files across 200+ file formats.
Performs deep analysis of a specific Amplitude chart to explain trends, anomalies, and likely drivers.
Install Analyze Chart
$ npx skills add amplitude/builder-skills --skill analyze-chart -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install amplitude/builder-skills analyze-chart --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/amplitude/builder-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/analytics-skills/skills/analyze-chart .claude/skills/analyze-chart && 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 "analyze-chart" agent skill from https://github.com/amplitude/builder-skills/tree/main/analytics-skills/skills/analyze-chart into .claude/skills/analyze-chart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analyze-chart", 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/amplitude/builder-skills/tree/main/analytics-skills/skills/analyze-chartType 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 amplitude/builder-skills --skill analyze-chart -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install amplitude/builder-skills analyze-chart --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/analytics-skills/skills/analyze-chart .agents/skills/analyze-chart && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "analyze-chart" agent skill from https://github.com/amplitude/builder-skills/tree/main/analytics-skills/skills/analyze-chart into .agents/skills/analyze-chart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analyze-chart", 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 amplitude/builder-skills --skill analyze-chart -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install amplitude/builder-skills analyze-chart --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/analytics-skills/skills/analyze-chart .cursor/skills/analyze-chart && 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 "analyze-chart" agent skill from https://github.com/amplitude/builder-skills/tree/main/analytics-skills/skills/analyze-chart into .cursor/skills/analyze-chart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analyze-chart", 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/amplitude/builder-skills.git --path analytics-skills/skills/analyze-chart--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 amplitude/builder-skills --skill analyze-chart -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install amplitude/builder-skills analyze-chart --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/analytics-skills/skills/analyze-chart .gemini/skills/analyze-chart && 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 "analyze-chart" agent skill from https://github.com/amplitude/builder-skills/tree/main/analytics-skills/skills/analyze-chart into .gemini/skills/analyze-chart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analyze-chart", 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 amplitude/builder-skills analyze-chartInstalls 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 amplitude/builder-skills --skill analyze-chart -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/analytics-skills/skills/analyze-chart .github/skills/analyze-chart && 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 "analyze-chart" agent skill from https://github.com/amplitude/builder-skills/tree/main/analytics-skills/skills/analyze-chart into .github/skills/analyze-chart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analyze-chart", 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 amplitude/builder-skills --skill analyze-chart -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install amplitude/builder-skills analyze-chart --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/analytics-skills/skills/analyze-chart .opencode/skills/analyze-chart && 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 "analyze-chart" agent skill from https://github.com/amplitude/builder-skills/tree/main/analytics-skills/skills/analyze-chart into .opencode/skills/analyze-chart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analyze-chart", 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
analyze-chart- GitHub stars
- 159
- Token cost
- ~1.1k tokens
- SKILL.md length
- 547 words
- Files
- 1
- Skills in repo
- 61
- Repo updated
- First seen
- Licence
- None found
At a glance
Performs deep analysis of a specific Amplitude chart to explain trends, anomalies, and likely drivers.
- Works in 6 steps: Identify the Chart → Retrieve and Validate Chart Data… → Identify the Pattern and Change Window → …
- A metric looks unusual
- SKILL.md covers When to Use, Instructions and Best Practices
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Analyze Chart is an agent skill from amplitude/builder-skills. Performs deep analysis of a specific Amplitude chart to explain trends, anomalies, and likely drivers. Use when a metric looks unusual, investigating a spike or drop, or understanding the "why" behind numbers.
Its SKILL.md is about 1.1k 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 Data & Analytics. The repository describes itself as: Open-source AI skills for product managers — battle-tested by PMs at Amplitude.
When your agent uses it
- A metric looks unusual
- Investigating a spike
- Understanding the why behind numbers
Example prompts
- “Use the analyze-chart skill to perform deep analysis of a specific Amplitude chart to explain trends, anomalies, and likely drivers”
- “/analyze-chart”
Workflow steps
6 steps, taken from the step headings in SKILL.md.
- Identify the Chart
- Retrieve and Validate Chart Data (Mandatory)
- Identify the Pattern and Change Window
- Investigate Likely Drivers (Bounded)
- Correlate with Context (Required for Anomalies)
- Synthesize Findings
What it can do on your machine
Read from SKILL.md and the folder at commit 51838c2. 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
Analyze Chart loads about 1.1k tokens when it runs. Until then it costs about 56 tokens; SKILL.md has 547 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 547 words (~1,141 tokens).
- name
- analyze-chart
- suggest_when
- User asks "why did this metric move", "explain this chart", shares a chart URL, or wants to investigate a spike, drop, or anomaly in a specific metric.
Files
Just SKILL.md in analytics-skills/skills/analyze-chart of amplitude/builder-skills.
Open the folder on GitHubat commit 51838c2
Compare with similar skills
Analyze Chart 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 |
|---|---|---|---|---|---|---|
| Analyze Chart this skillamplitude/builder-skills | 159 | — | ~1.1k | Automated safety check: Pass | None | |
| Exploratory Data Analysisspacering-net/codeg | 3.8k | 15 repos | ~3.6k | Automated safety check: Pass | MIT | |
| MatplotlibzLanqing/codex-claude-academic-skills | 4.6k | 18 repos | ~2.9k | Automated safety check: Pass | MIT | |
| Scikit LearnzLanqing/codex-claude-academic-skills | 4.6k | 17 repos | ~3.9k | Automated safety check: Pass | BSD-3-Clause | |
| Chart Visualizationbytedance/deer-flow | 83k | 2 repos | ~840 | Automated safety check: Pass | MIT | |
| TimesFM Forecastinggoogle-research/timesfm | 34k | — | ~4.7k | Automated safety check: Pass | Apache-2.0 |
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Categories
Questions about Analyze Chart
What does Analyze Chart do?
Performs deep analysis of a specific Amplitude chart to explain trends, anomalies, and likely drivers. Analyze Chart is an agent skill from amplitude/builder-skills. Performs deep analysis of a specific Amplitude chart to explain trends, anomalies, and likely drivers.
When should I use Analyze Chart?
Analyze Chart fits situations like: A metric looks unusual; investigating a spike; understanding the why behind numbers.
How do I install Analyze Chart in Claude Code?
Run `npx skills add amplitude/builder-skills --skill analyze-chart -a claude-code`. Or copy the skill folder (analytics-skills/skills/analyze-chart in amplitude/builder-skills) into .claude/skills/analyze-chart in your project. Claude Code loads it when a task matches its description.
How do I install Analyze Chart in Codex?
Run `npx skills add amplitude/builder-skills --skill analyze-chart -a codex`. Or copy the skill folder (analytics-skills/skills/analyze-chart in amplitude/builder-skills) into .agents/skills/analyze-chart in your project. Codex loads it when a task matches its description.
Can I use Analyze Chart 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 amplitude/builder-skills --skill analyze-chart -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/analyze-chart, .gemini/skills/analyze-chart, .github/skills/analyze-chart and .opencode/skills/analyze-chart in your project.
What does Analyze Chart need to run?
SKILL.md names no scripts, command-line tools or credentials: Analyze Chart is instructions for the agent only.
Does Analyze Chart 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 Analyze Chart 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 Analyze Chart use?
No licence was found for Analyze Chart or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Analyze Chart use?
About 1.1k tokens (SKILL.md is roughly 4.6k 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 Analyze Chart?
Skills that share tags, products or a category with Analyze Chart: Exploratory Data Analysis (spacering-net/codeg, 3.8k stars), Matplotlib (zLanqing/codex-claude-academic-skills, 4.6k stars), Scikit Learn (zLanqing/codex-claude-academic-skills, 4.6k stars) and Chart Visualization (bytedance/deer-flow, 83k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Analyze Chart?
amplitude (a GitHub organization) maintains it in amplitude/builder-skills, which has 159 GitHub stars. The repository holds 61 skills in this directory. The repository was last updated on July 24, 2026.
Source: amplitude/builder-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.