# ChartBytes (oci · ghcr.io/haswell119/chartbytes-mcp:1.0.2)

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

- Trust score: 45/100 (low)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- oci · `ghcr.io/haswell119/chartbytes-mcp:1.0.2`: 45/100 (this document), [markdown](https://verifymcp.io/servers/haswell119-chartbytes-mcp/ghcr-io-haswell119-chartbytes-mcp-1-0-2.md), [page](https://verifymcp.io/servers/haswell119-chartbytes-mcp/ghcr-io-haswell119-chartbytes-mcp-1-0-2)

## Channel facts

- Registry: `oci`
- Package: `ghcr.io/haswell119/chartbytes-mcp: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 2026-11-05.

- **Supply Chain Security**: 0/100
  - No malware scan is available for this kind of package: the supply-chain vendors we use do not cover it. This is a permanent gap in our coverage, not a finding about the package.
  - Known CVEs could not be checked: this artifact ships no SBOM or dependency manifest, so there is no dependency list to read.
  - Install-script risk not yet assessed.
  - Dependency health could not be checked: this artifact ships no SBOM or dependency manifest, so there is no dependency list to read.
- **Provenance & Transparency**: 6/100
  - Repository check failed: no source repository is declared.
  - Provenance check failed: no build-provenance attestation is published.
  - License check failed: no license is declared.
  - Actively maintained (last published 40 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 66/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 404 tokens (~404/item across 1 items; 1 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 100/100
  - No destabilizing schema changes in the last 30 days.
- **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 1 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 1 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the ChartBytes MCP server?

ChartBytes runs locally as a container image, launched with docker run --rm -i -e CHARTBYTES_URL -e CHARTBYTES_LICENSE ghcr.io/haswell119/chartbytes-mcp:1.0.2. 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 haswell119-chartbytes-mcp -- docker run --rm -i -e CHARTBYTES_URL -e CHARTBYTES_LICENSE ghcr.io/haswell119/chartbytes-mcp:1.0.2
```

This image reads CHARTBYTES_URL and CHARTBYTES_LICENSE. Set them in your client's env block for this server; docker run -e passes each one through to the container.

### Cursor

```json
{
  "mcpServers": {
    "haswell119-chartbytes-mcp": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "-e",
        "CHARTBYTES_URL",
        "-e",
        "CHARTBYTES_LICENSE",
        "ghcr.io/haswell119/chartbytes-mcp:1.0.2"
      ]
    }
  }
}
```

This image reads CHARTBYTES_URL and CHARTBYTES_LICENSE. Set them in your client's env block for this server; docker run -e passes each one through to the container.

### VS Code

```json
{
  "servers": {
    "haswell119-chartbytes-mcp": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "-e",
        "CHARTBYTES_URL",
        "-e",
        "CHARTBYTES_LICENSE",
        "ghcr.io/haswell119/chartbytes-mcp:1.0.2"
      ]
    }
  }
}
```

This image reads CHARTBYTES_URL and CHARTBYTES_LICENSE. Set them in your client's env block for this server; docker run -e passes each one through to the container.

### Codex

```bash
codex mcp add haswell119-chartbytes-mcp -- docker run --rm -i -e CHARTBYTES_URL -e CHARTBYTES_LICENSE ghcr.io/haswell119/chartbytes-mcp:1.0.2
```

This image reads CHARTBYTES_URL and CHARTBYTES_LICENSE. Set them in your client's env block for this server; docker run -e passes each one through to the container.

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "haswell119-chartbytes-mcp": {
      "type": "local",
      "command": [
        "docker",
        "run",
        "--rm",
        "-i",
        "-e",
        "CHARTBYTES_URL",
        "-e",
        "CHARTBYTES_LICENSE",
        "ghcr.io/haswell119/chartbytes-mcp:1.0.2"
      ],
      "enabled": true
    }
  }
}
```

This image reads CHARTBYTES_URL and CHARTBYTES_LICENSE. Set them in your client's env block for this server; docker run -e passes each one through to the container.

### Hermes

```yaml
mcp_servers:
  haswell119-chartbytes-mcp:
    command: "docker"
    args: ["run", "--rm", "-i", "-e", "CHARTBYTES_URL", "-e", "CHARTBYTES_LICENSE", "ghcr.io/haswell119/chartbytes-mcp:1.0.2"]
```

This image reads CHARTBYTES_URL and CHARTBYTES_LICENSE. Set them in your client's env block for this server; docker run -e passes each one through to the container.

### Netclaw

```json
{
  "McpServers": {
    "haswell119-chartbytes-mcp": {
      "Transport": "stdio",
      "Command": "docker",
      "Arguments": [
        "run",
        "--rm",
        "-i",
        "-e",
        "CHARTBYTES_URL",
        "-e",
        "CHARTBYTES_LICENSE",
        "ghcr.io/haswell119/chartbytes-mcp:1.0.2"
      ]
    }
  }
}
```

This image reads CHARTBYTES_URL and CHARTBYTES_LICENSE. Set them in your client's env block for this server; docker run -e passes each one through to the container.

### Other

```json
{
  "mcpServers": {
    "haswell119-chartbytes-mcp": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "-e",
        "CHARTBYTES_URL",
        "-e",
        "CHARTBYTES_LICENSE",
        "ghcr.io/haswell119/chartbytes-mcp:1.0.2"
      ]
    }
  }
}
```

This image reads CHARTBYTES_URL and CHARTBYTES_LICENSE. Set them in your client's env block for this server; docker run -e passes each one through to the container.

## 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.

### 2026-11-02 (score 45, 0)

- [security] Stability: 0.97 → pass

### 2026-11-01 (score 45, +1)

No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 44, −1)

- [functional] Stability: pass → 0.93

### 2026-10-25 (score 45, 0)

- [security] Stability: 0.97 → pass

### 2026-10-24 (score 45, +1)

No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-22 (score 44, +1)

No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-20 (score 43, +1)

No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-18 (score 42, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (1)

### `generate_chart` (~404 tokens)

Render a chart as a static image (PNG or SVG) via the ChartBytes API and return it both inline (an image the caller can view) and as an embeddable URL + Markdown snippet for READMEs, emails, Notion, Slack, or PDFs — anywhere an <img> works but a JavaScript charting library cannot. Read-only: generates an image from the supplied data and never mutates external state.

Input parameters:

- `data` (array|string, required): Required. Values to plot. A flat number list e.g. [12,19,8,24] renders one series; a list of series e.g. [[4,8,6],[2,3,4]] renders grouped/stacked bars; or pass a string '1,2,3|4,5,6' (series separat…
- `format` (string): Output format: 'png' (default) or 'svg'.
- `height` (integer): Image height in pixels (default 300).
- `labels` (array|string): Category labels for the data, as a list of strings or a comma-separated string. Optional.
- `theme` (string): Color theme. 'light' is free; 'dark' and 'brand' require a ChartBytes Pro license (a one-time paid upgrade). If Pro is requested without a license the server explains how to buy it.
- `title` (string): Chart title shown above the plot. Optional.
- `type` (string): Chart type to render: 'bar' (vertical bars), 'hbar' (horizontal bars), 'stacked' (stacked vertical bars, one per series), 'line' (line chart, multi-series), 'area' (filled line), 'scatter' (points on…
- `width` (integer): Image width in pixels (default 600).

## Diagnostics

Captured diagnostic sections: Provenance. The full working is on the page: https://verifymcp.io/servers/haswell119-chartbytes-mcp/ghcr-io-haswell119-chartbytes-mcp-1-0-2#diagnostics

## Score history

- 2026-11-05: 45
- 2026-11-04: 45
- 2026-11-03: 45
- 2026-11-02: 45
- 2026-11-01: 45
- 2026-10-31: 44
- 2026-10-30: 45
- 2026-10-29: 45
- 2026-10-28: 45
- 2026-10-27: 45
- 2026-10-26: 45
- 2026-10-25: 45
- 2026-10-24: 45
- 2026-10-23: 44
- 2026-10-22: 44
- 2026-10-21: 43
- 2026-10-20: 43
- 2026-10-19: 42
- 2026-10-18: 42
- 2026-10-17: 41
- 2026-10-16: 41
- 2026-10-15: 40
- 2026-10-14: 40
- 2026-10-13: 39
- 2026-10-12: 39
- 2026-10-10: 38
- 2026-10-05: 36
- 2026-10-04: 35
- 2026-10-03: 31
- 2026-10-02: 31

## Common questions

### What is the ChartBytes MCP server?

ChartBytes is an MCP server listed in the public MCP registry as io.github.Haswell119/chartbytes-mcp. Generate chart images (bar, hbar, stacked, line, area, scatter, pie, donut) as PNG/SVG for AI agents. This page covers its container image (ghcr.io/haswell119/chartbytes-mcp:1.0.2).

### Is the ChartBytes MCP server safe to use?

ChartBytes scores 45 out of 100 on VerifyMCP. 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 ChartBytes MCP server expose?

ChartBytes exposes 1 tool: generate_chart. Their descriptions and schemas cost roughly 404 tokens of context every time the server is loaded.

### Is the ChartBytes MCP server still maintained?

ChartBytes is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- GitHub Container Registry: https://ghcr.io/haswell119/chartbytes-mcp
- Changelog RSS feed: https://verifymcp.io/servers/haswell119-chartbytes-mcp/ghcr-io-haswell119-chartbytes-mcp-1-0-2.xml
- Changelog JSON feed: https://verifymcp.io/servers/haswell119-chartbytes-mcp/ghcr-io-haswell119-chartbytes-mcp-1-0-2.json
- HTML version of this page: https://verifymcp.io/servers/haswell119-chartbytes-mcp/ghcr-io-haswell119-chartbytes-mcp-1-0-2