# io.github.mortenator/charta (npm · @charta/mcp)

Generate beautiful, presentation-ready charts (SVG + PNG). Supports 14+ chart types.

- Trust score: 57/100 (low)
- Change this week: +17
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@charta/mcp`: 57/100 (this document), [markdown](https://verifymcp.io/servers/mortenator-charta/charta-mcp.md), [page](https://verifymcp.io/servers/mortenator-charta/charta-mcp)

## Channel facts

- Registry: `npm`
- Package: `@charta/mcp`
- Version: `1.0.2`
- 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 2026-08-03.

- **Supply Chain Security**: 70/100
  - No malware found by supply-chain analysis.
  - CVE check failed: a known high-severity CVE affects sharp 0.33.5, a direct dependency. A fixed version is available.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (125 of 129), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 19/100
  - Repository check failed: the declared repository URL returned HTTP 404.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 141 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 441 tokens (~88/item across 5 items; 5 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 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.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add mortenator-charta -- npx -y @charta/mcp
```

### Codex

```bash
codex mcp add mortenator-charta -- npx -y @charta/mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mortenator-charta": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@charta/mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add mortenator-charta --command npx --arg -y --arg @charta/mcp
```

### Hermes

```yaml
mcp_servers:
  mortenator-charta:
    command: "npx"
    args: ["-y", "@charta/mcp"]
```

### Other

```json
{
  "mcpServers": {
    "mortenator-charta": {
      "command": "npx",
      "args": [
        "-y",
        "@charta/mcp"
      ]
    }
  }
}
```

## 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.

### 2026-08-03 (score 57, +3)

- [functional improvement] Stability: unverified → 0.23

### 2026-08-02 (score 54, +39)

- [security regression] GHSA-f88m-g3jw-g9cj affects this package: high
- [security regression] Provenance: unverified → fail
- [security regression] Known CVEs: unverified → fail
- [security improvement] Install scripts: unverified → pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Schema quality: unverified → good
- [functional improvement] License: unverified → pass
- [functional] Licence: MIT

### 2026-08-01 (score 15, −1)

- [security improvement] Malware scan: unverified → pass
- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-07-31 (score 16, −24)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-27 (score 40)

First indexed and scored.

## MCP tools (5)

### `generate_chart` (~149 tokens)

Generate a beautiful, presentation-ready chart and return it as an SVG string. The chart is automatically cached and can be saved later with save_chart.

Input parameters:

- `data` (array, required): Data points. Shape varies by chart type — use list_chart_types or get_chart_schema for details.
- `seriesLabels` (array): Series labels for multi-series charts (grouped-bar, stacked-bar, line with values[])
- `style` (object): Optional styling options
- `title` (string): Optional chart title displayed at the top
- `type` (string, required): The type of chart to generate
- `xLabel` (string): Optional X-axis label
- `yLabel` (string): Optional Y-axis label

### `list_chart_types` (~35 tokens)

List all supported chart types with descriptions, required data shapes, and examples. Use this to discover which chart type fits your data.

### `get_chart_schema` (~42 tokens)

Get the full JSON schema for a specific chart type, including all required and optional fields.

Input parameters:

- `type` (string, required): The chart type to get the schema for

### `save_chart` (~124 tokens)

Save a chart to a file as SVG or PNG. Provide either a chartId (from a previous generate_chart call) or an SVG string directly.

Input parameters:

- `chartId` (string): The chartId returned by generate_chart (preferred)
- `format` (string, required): Output format. PNG requires the 'sharp' package to be installed.
- `outputPath` (string, required): Absolute or relative path where the file should be saved, e.g. /tmp/chart.png or ./output/revenue.svg
- `svg` (string): SVG string to save directly (alternative to chartId)

### `describe_chart` (~91 tokens)

Given your data and context, recommend the best chart type and explain why. Also suggests alternatives. Great for when you're not sure which chart to use.

Input parameters:

- `context` (string): What you're trying to show or communicate. E.g. 'quarterly revenue growth over 2 years', 'market share by product', 'project timeline'
- `data` (array, required): Your data array (can be partial/sample data)

## Diagnostics

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

## Score history

- 2026-08-03: 57
- 2026-08-02: 54
- 2026-08-01: 15
- 2026-07-31: 16
- 2026-07-30: 40
- 2026-07-28: 40
- 2026-07-27: 40

## Links

- npm package: https://www.npmjs.com/package/@charta/mcp
- Socket report: https://socket.dev/npm/package/@charta/mcp
- Changelog RSS feed: https://verifymcp.io/servers/mortenator-charta/charta-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/mortenator-charta/charta-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/mortenator-charta/charta-mcp