Darwin-owned AntV Charts

io.github.darwin-studios/owned-antv-chartdarwin-studiosstreamable-httpv0.1.0Scanned 2 hours ago

Darwin-hosted AntV bar, column and line charts. Free rendering with bounded PNG outputs.

3 tools: 3 change things.

Reads private data · 0
Reads text others write · 3
Can send data out · 0
3 findings

Anlyon alternative

3 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

3 tools

Changes things 3Creates or changes something that can be changed back.Claude Code: ask

generate_bar_chartGenerate a horizontal bar chart to show data for numerical comparisons among different categories, such as, comparing categorical data and for horizontal comparisons.Reads text others write1 finding
Why it is in this group
- The name "generate_bar_chart" says "generate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Findings
- Warn
  The server marks "generate_bar_chart" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "generate_bar_chart" says "generate": a word for a change.
  What this check looks for
Description, as the server wrote it
Generate a horizontal bar chart to show data for numerical comparisons among different categories, such as, comparing categorical data and for horizontal comparisons. Hosted by Darwin using AntV's public free renderer. Returns a PNG image. Accepts at most 50 rows with bounded image sizes. No API key is required; payments are not supported.
Annotations the server declares
- title: Generate Bar Chart
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: false
- openWorldHint: true
generate_column_chartGenerate a column chart, which are best for comparing categorical data, such as, when values are close, column charts are preferable because our eyes are better at judging height t…Reads text others write1 finding
Why it is in this group
- The name "generate_column_chart" says "generate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Findings
- Warn
  The server marks "generate_column_chart" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "generate_column_chart" says "generate": a word for a change.
  What this check looks for
Description, as the server wrote it
Generate a column chart, which are best for comparing categorical data, such as, when values are close, column charts are preferable because our eyes are better at judging height than other visual elements like area or angles. Hosted by Darwin using AntV's public free renderer. Returns a PNG image. Accepts at most 50 rows with bounded image sizes. No API key is required; payments are not supported.
Annotations the server declares
- title: Generate Column Chart
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: false
- openWorldHint: true
generate_line_chartGenerate a line chart to show trends over time, such as, the ratio of Apple computer sales to Apple's profits changed from 2000 to 2016.Reads text others write1 finding
Why it is in this group
- The name "generate_line_chart" says "generate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Findings
- Warn
  The server marks "generate_line_chart" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "generate_line_chart" says "generate": a word for a change.
  What this check looks for
Description, as the server wrote it
Generate a line chart to show trends over time, such as, the ratio of Apple computer sales to Apple's profits changed from 2000 to 2016. Hosted by Darwin using AntV's public free renderer. Returns a PNG image. Accepts at most 50 rows with bounded image sizes. No API key is required; payments are not supported.
Annotations the server declares
- title: Generate Line Chart
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: false
- openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or outbound.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write3: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; generate_bar_chart
generate_column_chart
generate_line_chart
Can send data out0: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

3 warn

Warngenerate_bar_chart
The server marks "generate_bar_chart" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "generate_bar_chart" says "generate": a word for a change.
What this check looks for
Warngenerate_column_chart
The server marks "generate_column_chart" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "generate_column_chart" says "generate": a word for a change.
What this check looks for
Warngenerate_line_chart
The server marks "generate_line_chart" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "generate_line_chart" says "generate": a word for a change.
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http owned-antv-chart https://creora.darwin.so/providers/antv/mcp

claude mcp add --transport http owned-antv-chart https://creora.darwin.so/providers/antv/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__owned-antv-chart__generate_bar_chart",
      "mcp__owned-antv-chart__generate_column_chart",
      "mcp__owned-antv-chart__generate_line_chart"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as owned-antv-chart. Review it before you use it.

Capability tags behind 3 rules

mcp__owned-antv-chart__generate_bar_chart untrusted-input
mcp__owned-antv-chart__generate_column_chart untrusted-input
mcp__owned-antv-chart__generate_line_chart untrusted-input

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/io.github.darwin-studios/owned-antv-chart/verify?hash=3e24b87f33c88bfb69d020946d3210c2e54b61ec2028385690b975743628d2d1" | jq -e '.changed == false'

Pinned hash 3e24b87f33c8, from Oct 29, 2026, 01:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.darwin-studios/owned-antv-chart/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Badge

[![anlyon.dev](https://anlyon.dev/badge/io.github.darwin-studios/owned-antv-chart.svg)](https://anlyon.dev/servers/io.github.darwin-studios/owned-antv-chart)

Source: MCP Registry. Synced Oct 29, 2026, 02:17 UTC.