# io.github.xkqg/matplotlibnet (nuget · MatPlotLibNet.Mcp)

Renders MatPlotLibNet charts to PNG, SVG or PDF from a JSON spec an AI agent writes.

- Trust score: 72/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- nuget · `MatPlotLibNet.Mcp`: 72/100 (this document), [markdown](https://verifymcp.io/servers/xkqg-matplotlibnet/matplotlibnet-mcp.md), [page](https://verifymcp.io/servers/xkqg-matplotlibnet/matplotlibnet-mcp)

## Channel facts

- Registry: `nuget`
- Package: `MatPlotLibNet.Mcp`
- Version: `1.17.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-20.

- **Supply Chain Security**: 88/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Install-script risk not yet assessed.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 48/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 7 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 80/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 490 tokens (~98/item across 5 items; 5 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the io.github.xkqg/matplotlibnet MCP server?

io.github.xkqg/matplotlibnet runs locally as a NuGet package, launched with dnx MatPlotLibNet.Mcp@1.17.0 --yes. Ready-made configuration for Claude, Cursor, VS Code, Codex and 3 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add xkqg-matplotlibnet -- dnx MatPlotLibNet.Mcp@1.17.0 --yes
```

### Cursor

```json
{
  "mcpServers": {
    "xkqg-matplotlibnet": {
      "command": "dnx",
      "args": [
        "MatPlotLibNet.Mcp@1.17.0",
        "--yes"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "xkqg-matplotlibnet": {
      "command": "dnx",
      "args": [
        "MatPlotLibNet.Mcp@1.17.0",
        "--yes"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add xkqg-matplotlibnet -- dnx MatPlotLibNet.Mcp@1.17.0 --yes
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "xkqg-matplotlibnet": {
      "type": "local",
      "command": [
        "dnx",
        "MatPlotLibNet.Mcp@1.17.0",
        "--yes"
      ],
      "enabled": true
    }
  }
}
```

### Hermes

```yaml
mcp_servers:
  xkqg-matplotlibnet:
    command: "dnx"
    args: ["MatPlotLibNet.Mcp@1.17.0", "--yes"]
```

### Netclaw

```json
{
  "McpServers": {
    "xkqg-matplotlibnet": {
      "Transport": "stdio",
      "Command": "dnx",
      "Arguments": [
        "MatPlotLibNet.Mcp@1.17.0",
        "--yes"
      ]
    }
  }
}
```

### Other

```json
{
  "mcpServers": {
    "xkqg-matplotlibnet": {
      "command": "dnx",
      "args": [
        "MatPlotLibNet.Mcp@1.17.0",
        "--yes"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-20 (score 72, +4)

- [functional improvement] Stability: unverified → 0.27

### 2026-09-12 (score 68)

First indexed and scored.

## MCP tools (5)

### `describe_chart_schema` (~68 tokens)

Describes the fields of a chart spec, with a worked example. Pass a chart type to see the fields of that type; omit it for the shape of the whole spec.

Input parameters:

- `seriesType` (string|null): A chart type from list_chart_types, or omit for the whole spec.

### `render_chart` (~147 tokens)

Renders a chart from a MatPlotLibNet figure-JSON spec and returns it as a PNG image, with a short text summary of what was drawn. Call describe_chart_schema for the shape of the spec and list_chart_types for the chart types. For SVG or PDF, use save_chart — they are too large to return inline.

Input parameters:

- `format` (string): The image format. Only png can be returned inline.
- `spec` (required): The chart spec: MatPlotLibNet figure JSON, e.g. {"width":800,"height":600,"subPlots":[{"series":[{"type":"line","xData":[1,2],"yData":[3,4]}]}]}

### `list_chart_types` (~26 tokens)

Lists the chart types a spec may name in a series' "type" field.

### `chart_data_table` (~89 tokens)

Returns the DATA of a chart spec as markdown tables - the numbers the picture is drawn from, which an image cannot be read for. One table per group of series that share an x. Long charts are refused with the limit in the message; save the chart and read the file instead.

Input parameters:

- `spec` (required): The chart spec: MatPlotLibNet figure JSON, the same document render_chart takes.

### `save_chart` (~160 tokens)

Renders a chart from a MatPlotLibNet figure-JSON spec and writes it to a file, returning the path it wrote. Use this for SVG and PDF, and for images too large to return inline. The file is written under the server's output directory; an existing file is kept unless overwrite is true.

Input parameters:

- `format` (string, required): The output format; it must match the file extension.
- `overwrite` (boolean): Replace the file when it already exists. Off by default: the server never destroys a file it did not make.
- `path` (string, required): File name or relative path, with the extension of the format (.png, .svg or .pdf).
- `spec` (required): The chart spec: MatPlotLibNet figure JSON.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/xkqg-matplotlibnet/matplotlibnet-mcp#diagnostics

## Score history

- 2026-09-20: 72
- 2026-09-19: 68
- 2026-09-18: 68
- 2026-09-17: 68
- 2026-09-16: 68
- 2026-09-15: 68
- 2026-09-14: 68
- 2026-09-13: 68
- 2026-09-12: 68

## Common questions

### What is the io.github.xkqg/matplotlibnet MCP server?

io.github.xkqg/matplotlibnet is an MCP server listed in the public MCP registry as io.github.xkqg/matplotlibnet. Renders MatPlotLibNet charts to PNG, SVG or PDF from a JSON spec an AI agent writes. This page covers its NuGet package (MatPlotLibNet.Mcp).

### Is the io.github.xkqg/matplotlibnet MCP server safe to use?

io.github.xkqg/matplotlibnet scores 72 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the io.github.xkqg/matplotlibnet MCP server expose?

io.github.xkqg/matplotlibnet exposes 5 tools: describe_chart_schema, render_chart, list_chart_types, chart_data_table, save_chart. Their descriptions and schemas cost roughly 490 tokens of context every time the server is loaded.

### Is the io.github.xkqg/matplotlibnet MCP server still maintained?

io.github.xkqg/matplotlibnet is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the io.github.xkqg/matplotlibnet MCP server under?

io.github.xkqg/matplotlibnet declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- NuGet package: https://www.nuget.org/packages/MatPlotLibNet.Mcp
- Socket report: https://socket.dev/nuget/package/MatPlotLibNet.Mcp
- Repository: https://github.com/xkqg/MatPlotLibNet
- Changelog RSS feed: https://verifymcp.io/servers/xkqg-matplotlibnet/matplotlibnet-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/xkqg-matplotlibnet/matplotlibnet-mcp.json
- HTML version of this page: https://verifymcp.io/servers/xkqg-matplotlibnet/matplotlibnet-mcp