How do I install the Chart Markup skill?

Run npx skillmds@latest add ino-xious/chart-markup in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Chart Markup safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Chart Markup?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Chart Markup free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Chart Markup?

INo-xious (@ino-xious) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Chart Markup by ino-xious — Agent Skill

Name: Chart Markup
Author: INo-xious

File contents

Chart markup

This drives the browser the user is already signed into, over the Chrome DevTools Protocol, on Stockbit's own chart page. It is the one place this server touches a UI, and everything it draws lands in the user's real saved layout.

The sequence

chartbit_open symbol=… — put the chart in front of them. resolution and chart_type set the timeframe and style. Do this first; everything below acts on the open chart.
chartbit_analyze symbol=… — derive support, resistance and trend lines from the bars. min_touches controls how much evidence a level needs; lookback how far back to look. With draw=true it draws what it found in one step, and replace=true clears the previous set instead of stacking on it.
chartbit_draw symbol=… annotations=… anchor_date=… for anything specific. Times are epoch seconds, and anchor_date is what the annotation coordinates are relative to. Getting this wrong puts a line in 1970, which is visible but not useful.
chartbit_study symbol=… study=… for indicators. The studies are a closed list — the tool description names them. A study Stockbit does not have cannot be added by asking twice.
chartbit_screenshot symbol=… to see the result, and chartbit_save symbol=… to keep it.

Rules

Saving is explicit. Stockbit autosaves on its own schedule, which is not yours: if the user wants the markup to survive, call chartbit_save. Say that you did.
replace versus stacking. Running chartbit_analyze three times without replace=true leaves three sets of lines on the user's real chart. Prefer replace=true unless they asked to add to what is there.
This is their chart. Do not clear a layout you did not draw without asking. There is no undo.
Check the drawing landed. Take the screenshot. The CDP call can succeed while the chart rejects the annotation.
A blank white page means signed out. Stockbit's chart renders nothing at all when there is no session — no login prompt, nothing. If the screenshot is blank, that is what happened, and the fix is a login in that browser, not a retry.

---name: chart-markupdescription: Read and draw on the user's own Stockbit chart — levels, trend lines, studies, screenshots and saving the layout. Use when the user asks to draw, mark up, annotate or look at their chart.---# Chart markupThis drives the browser the user is already signed into, over the Chrome DevTools Protocol, onStockbit's own chart page. It is the one place this server touches a UI, and everything it drawslands in the user's real saved layout.## The sequence1. **`chartbit_open symbol=… `** — put the chart in front of them. `resolution` and `chart_type` set the timeframe and style. Do this first; everything below acts on the open chart.2. **`chartbit_analyze symbol=…`** — derive support, resistance and trend lines from the bars. `min_touches` controls how much evidence a level needs; `lookback` how far back to look. With `draw=true` it draws what it found in one step, and `replace=true` clears the previous set instead of stacking on it.3. **`chartbit_draw symbol=… annotations=… anchor_date=…`** for anything specific. **Times are epoch seconds**, and `anchor_date` is what the annotation coordinates are relative to. Getting this wrong puts a line in 1970, which is visible but not useful.4. **`chartbit_study symbol=… study=…`** for indicators. The studies are a **closed list** — the tool description names them. A study Stockbit does not have cannot be added by asking twice.5. **`chartbit_screenshot symbol=…`** to see the result, and **`chartbit_save symbol=…`** to keep it.## Rules- **Saving is explicit.** Stockbit autosaves on its own schedule, which is not yours: if the user wants the markup to survive, call `chartbit_save`. Say that you did.- **`replace` versus stacking.** Running `chartbit_analyze` three times without `replace=true` leaves three sets of lines on the user's real chart. Prefer `replace=true` unless they asked to add to what is there.- **This is their chart.** Do not clear a layout you did not draw without asking. There is no undo.- **Check the drawing landed.** Take the screenshot. The CDP call can succeed while the chart rejects the annotation.- **A blank white page means signed out.** Stockbit's chart renders nothing at all when there is no session — no login prompt, nothing. If the screenshot is blank, that is what happened, and the fix is a login in that browser, not a retry.

Frequently asked questions

Chart Markup