Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add INo-xious/stockbit-mcp --skill chart-markupgit clone --depth 1 https://github.com/INo-xious/stockbit-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/ino-xious/stockbit-mcp/chart-markup)<a href="https://agentmods.dev/skills/ino-xious/stockbit-mcp/chart-markup"><img src="https://agentmods.dev/badge/skills/ino-xious/stockbit-mcp/chart-markup/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ino-xious/stockbit-mcp/chart-markup"><img src="https://agentmods.dev/badge/skills/ino-xious/stockbit-mcp/chart-markup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 35 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00046 | $0.00600 |
| Opus 5.5 | $0.00018 | $0.00240 |
| Sonnet 5.5 | $0.00009 | $0.00120 |
| Haiku 4.5 | $0.00005 | $0.00060 |
Grade A, and why
chart-markup scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 41 lines — stays where its author put it; the contents beside it link to each section on GitHub.
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.resolutionandchart_typeset 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_touchescontrols how much evidence a level needs;lookbackhow far back to look. Withdraw=trueit draws what it found in one step, andreplace=trueclears the previous set instead of stacking on it.chartbit_draw symbol=… annotations=… anchor_date=…for anything specific. Times are epoch seconds, andanchor_dateis 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, andchartbit_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. replaceversus stacking. Runningchartbit_analyzethree times withoutreplace=trueleaves three sets of lines on the user's real chart. Preferreplace=trueunless 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.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 41 lines · 46 tokens per session scan A a9ca16a25a84
chart-markup is a skill published in the GitHub repository INo-xious/stockbit-mcp (56 stars, last pushed 2d ago), licensed MIT. It adds 46 tokens to every session and 600 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
tradingview-mcp
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escalation
Escalate a disputed refund to the billing lead.
refunds
Process customer refunds.
error-handling
Read the error codes these tools raise and decide whether to retry, fix the call, or stop.
issue-management
Create, update, list and search GitHub issues and PRs, list a repository's labels, run milestones, and check for duplicates.
release-management
Tag a commit, publish a GitHub release, and read, correct or withdraw the tags and releases already there.