ChartBytes

io.github.Haswell119Published by GitHub account Haswell119v1.0.2Updated Oct 24, 2026

Generate chart images (bar, hbar, stacked, line, area, scatter, pie, donut) as PNG/SVG for AI agents

VerifiedSTDIODesktop onlyData & AnalyticsMedia & Design

Overview

AI-generated overview

ChartBytes lets an assistant generate chart images (bar, line, area, scatter, pie, donut and more) as PNG or SVG, running as a local stdio process.

What you can do
  • Generate chart images from data: bar, horizontal bar, stacked, line, area, scatter, pie and donut charts.
  • Render output as PNG or SVG for use in reports, documents or messages.
  • Optionally apply dark or brand themes when a Pro license key is configured.
When to use it
Useful when an assistant needs to turn numbers into a visual chart file rather than a text table, for example for reports, slides or quick data summaries.
Requirements
Runs as a local process over stdio, distributed as a container image, so a container runtime is needed. It talks to a ChartBytes API whose base URL can be overridden with CHARTBYTES_URL and defaults to a hosted endpoint, so network access is required. An optional CHARTBYTES_LICENSE key enables Pro themes.
Before you install
Chart data is sent to the configured ChartBytes API endpoint, which by default is a third-party hosted service; point CHARTBYTES_URL at your own instance if the data is sensitive. The optional CHARTBYTES_LICENSE key is a secret and should be supplied through the environment, not shared. Desktop only; no web execution.

Installation

In SourceWeft

  1. Open ChartBytes in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

3
  1. v1.0.2LatestSep 25, 2026
  2. v1.0.1Sep 25, 2026
  3. v1.0.0Sep 25, 2026

Score

25% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • License10 pts

    Declare a license in the repository or the registry entry.