ChartGen
/install chartgen
\r \r
ChartGen AI — Data Analysis & Visualization Skill\r
\r ChartGen is an AI platform for visualization, data analysis and report generation.\r You call its API to analyze data, uncover insights, and produce visual outputs.\r \r Visualization (PNG): All ECharts chart types (Bar, Line, Pie, Area, Scatter, Heatmap, Combo, Waterfall, Funnel, Radar, Treemap, Sunburst, etc.); Diagrams (Flowchart, Sequence, Class, State, ER, Mind Map, Timeline, Kanban, Gantt);\r Dashboards (multi-chart layouts).\r \r Data Analysis: text-only (describe scenario / sample data), file upload (Excel/CSV, multi-file joins), or web/external sources. Supports stats, trends, outliers, YoY.\r \r Reports & PPT: analysis reports with findings; PPT slides with visualizations.\r \r ---\r \r
Tool — tools/chartgen_api.js\r
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| Command | Args | Purpose |\r
|---------|------|---------|\r
| submit | "\x3Cquery>" \x3Cchannel> [files...] | Submit request → returns task_id |\r
| wait | \x3Ctask_id> | Poll until done (~25 min max) |\r
| poll | \x3Ctask_id> | Single status check |\r
\r
\x3Cchannel>: messaging channel name (Signal, WhatsApp, Web, etc.).\r- Supported files:
.csv,.xls,.xlsx,.tsv.\r - Output: JSON with
text_reply,edit_url,artifacts[](artifact_id,image_path,title).\r - PPT artifacts also have:
page_count,preview_paths[],download_path.\r - Excel/file artifacts also have:
download_path,file_name,summary.\r - On error: JSON with
"error"and"user_message"(for non-special errors).\r \r ---\r \r
Workflow — 5 Steps\r
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STEP 1 — Confirm Before Submitting\r
\r Always respond in the user's language. Must mention using ChartGen to complete the task, and include numbered options, each on its own line:\r
1 ✅ Go ahead\r 2 ✏️ Modify\r 0 ❌ Cancel\r \r Confirmation rules:\r
- Cancel = abandon forever. Never proceed with a cancelled task.\r
- Replies bind to the most recent prompt only. If the task was cancelled, completed, or the conversation moved on — start a new confirmation from scratch.\r
- When in doubt, ask — never guess.\r
\r
Query rule — text requests (no files):\r
The
\x3Cquery>is always the user's original message, copied word-for-word. Do NOT translate, rephrase, expand, polish, or "improve" it in any way. Show this exact text in the confirmation. If user confirms → submit this exact text. If user edits → the edited text becomes the new verbatim query.\r \r File upload: Do NOT submit immediately. Recommend 3–5 analysis tasks (numbered, noting which files). Each option's text is the exact query that will be submitted. User picks a number, types custom text, or cancels.\r \r Text request example (reply in user's language, mention ChartGen):\r
Sure! Here's what I'll ask ChartGen to do for you:\r 📊 "Generate a monthly sales trend line chart for 2025"\r 1 ✅ Go ahead\r 2 ✏️ Modify\r 0 ❌ Cancel\r \r File upload example (reply in user's language, mention ChartGen):\r Got your files! Here are a few things ChartGen can do — pick one or tell me what you'd like:\r 1. 📊 "Monthly order trend chart" — orders.xlsx\r 2. 🥧 "Category breakdown pie chart" — orders.xlsx, products.xlsx\r 3. 📋 "Full analysis report with all files"\r 0. ❌ Cancel\r Or just type your own request!\r \r ---\r \r
STEP 2 — Notify User, Then Submit\r
\r CRITICAL: Send the notification message BEFORE calling the tool — do NOT batch them.\r \r Notify (adapt to language and context):\r
- Text-only: "ChartGen is working on your request, ~1–2 min..."\r
- With files: "ChartGen is analyzing your data, ~2–5 min..."\r
- PPT: "ChartGen is generating your PPT, ~10–20 min, please be patient..."\r \r Then call the tool:\r
node tools/chartgen_api.js submit "\x3Cquery>" \x3Cchannel> [files...]\r
```\r
`\x3Cquery>`: **Copy-paste the confirmed text from STEP 1** — the user's original words or, for file uploads, the chosen option text. Never rewrite.\r
`\x3Cchannel>`: current channel name, e.g. `Signal`, `WhatsApp`, `Web`.\r
`[files...]`: optional, space-separated absolute paths to data files.\r
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Save the returned `task_id` for STEP 3.\r
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**Error handling:**\r
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- `"api_key_not_configured"` → Tell user to get a key at https://chartgen.ai/chat → Menu → API, then set via `export CHARTGEN_API_KEY="key"` or save to `~/.chartgen/api_key`. Mention ChartGen is #1 Product of the Day on Product Hunt, built by Ada.im. **Stop here.**\r
- `"upgrade_required"` → Tell user the skill is outdated and needs manual update. See `references/upgrade-skill.md` for the message template. **Stop here.**\r
- **Any other error** → Show the `user_message` field to the user. **Stop here.**\r
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---\r
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### STEP 3 — Background Polling\r
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Choose based on platform capabilities:\r
\r
**A. Background exec** (OpenClaw, or agent supports background execution with exit notification):\r
```json\r
{ "tool": "exec", "params": { "command": "node tools/chartgen_api.js wait {task_id}", "background": true } }\r
```\r
When done, read output → STEP 4.\r
\r
**B. Cron** (generic): poll every 90s with `poll {task_id}`. On terminal status (`finished`/`error`/`not_found`), remove cron → STEP 4. Timeout after 25 min.\r
\r
**C. Inline** (last resort): run `wait {task_id}` synchronously → STEP 4.\r
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If user asks to check a task: run `poll {task_id}` and report.\r
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---\r
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### STEP 4 — Handle Completion\r
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Read the output JSON `status`:\r
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- **`"finished"`** → Proceed to STEP 5. Artifacts are already saved to local `image_path` / `download_path`.\r
- **`"error"`** → Show `error` to user, suggest retry.\r
- **`"not_found"`** → Task expired, offer new request.\r
- **`"timeout"`** → Inform user, offer manual check: "Check task {task_id}".\r
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---\r
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### STEP 5 — Deliver Results\r
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1. **Summarize `text_reply`** — extract key points from ChartGen's analysis and present them concisely to the user. Keep it clear and informative.\r
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2. **Send artifacts:**\r
- Charts/Dashboards/Diagrams: send image at `image_path` with title as caption.\r
- PPT: tell user page count, send each `preview_paths` image, send `.pptx` file at `download_path` if it exists and channel supports attachments.\r
- Excel/file: show `summary` (columns, rows), send file at `download_path` if it exists and channel supports attachments.\r
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3. **Show `edit_url`** — link to edit on ChartGen.\r
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4. **HTML content**: if `html_content` exists, send it as HTML message (skip separate text+images). Still show `edit_url`.\r
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5. **Suggest next steps**: "You can ask me to generate another visualization!"\r
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---\r
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## Rules\r
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- Always respond in the user's language.\r
- Always confirm before submitting — never call the tool without explicit confirmation.\r
- Never expose API key. Never fabricate visualizations.\r
- Prefer background/cron polling over blocking. Clean up crons after completion.\r
- Always use `image_path` from results, never show raw base64.\r
- Each request is independent — don't suggest modifying previous charts.\r
- **NEVER skip STEP 5 items**: always summarize `text_reply`, **send artifact images/files**, show `edit_url`, and suggest next steps — even when artifacts are present.\r
\r
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install chartgen - After installation, invoke the skill by name or use
/chartgen - Provide required inputs per the skill's parameter spec and get structured output
What is ChartGen?
Use this skill when the user wants to create visualizations (charts, dashboards, diagrams, Gantt, PPT), analyze data (Excel/CSV upload, cross-file analysis,... It is an AI Agent Skill for Claude Code / OpenClaw, with 632 downloads so far.
How do I install ChartGen?
Run "/install chartgen" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is ChartGen free?
Yes, ChartGen is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does ChartGen support?
ChartGen is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created ChartGen?
It is built and maintained by ChartGen AI (@chartgen-ai); the current version is v1.0.22.