# com.yaktool/image (npm · yaktool-image-mcp)

Compress, convert and resize images locally, with marketplace presets and rule rechecks.

- Trust score: 76/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- npm · `yaktool-image-mcp`: 76/100 (this document), [markdown](https://verifymcp.io/servers/com-yaktool-image/yaktool-image-mcp.md), [page](https://verifymcp.io/servers/com-yaktool-image/yaktool-image-mcp)

## Channel facts

- Registry: `npm`
- Package: `yaktool-image-mcp`
- Version: `0.2.0`
- 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**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 0 of 1 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 19/100
  - Repository check failed: no source repository is declared.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 24 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1056 tokens (~528/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 87/100
  - Stability observed for 26 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 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 2 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.

## Install

### How do I install the com.yaktool/image MCP server?

com.yaktool/image runs locally as an npm package, launched with npx -y yaktool-image-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add com-yaktool-image -- npx -y yaktool-image-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "com-yaktool-image": {
      "command": "npx",
      "args": [
        "-y",
        "yaktool-image-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-yaktool-image": {
      "command": "npx",
      "args": [
        "-y",
        "yaktool-image-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add com-yaktool-image -- npx -y yaktool-image-mcp
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add com-yaktool-image --command npx --arg -y --arg yaktool-image-mcp
```

### Hermes

```yaml
mcp_servers:
  com-yaktool-image:
    command: "npx"
    args: ["-y", "yaktool-image-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "com-yaktool-image": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "yaktool-image-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-yaktool-image -t stdio -c npx -a -y yaktool-image-mcp
```

### Other

```json
{
  "mcpServers": {
    "com-yaktool-image": {
      "command": "npx",
      "args": [
        "-y",
        "yaktool-image-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.

### 2026-09-20 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-18 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-16 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-14 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-12 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-09 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-07 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-05 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (2)

### `compress_image` (~465 tokens)

Compress a PNG/JPEG image file (local, lossless or smart-lossy)

Compress a local PNG or JPEG file with the same engine as the yaktool web compressor, documented in 12 published behaviours. smart mode (default): PNGs are palette-quantized with an alpha-weighted PSNR floor derived from `quality` (fewest colours that stay above the floor; falls back to lossless when even 256 colours would visibly degrade); JPEGs are re-encoded with mozjpeg, progressive. lossless mode: pixels stay byte-identical — PNGs lose only render-neutral metadata chunks and get an oxipng pass; JPEGs are rebuilt without metadata segments. Optional `format` converts to WebP or AVIF (both support true lossless; AVIF is slowest but smallest). GUARANTEES: the input file is never modified; an existing output file is never overwritten (delete it first if you mean it); if no candidate beats the original size, NO file is written and the result says so (`outcome: "kept-original"`) — the original is already optimal, do not retry with the same settings. Animated PNGs are skipped, never flattened to one frame. Returns { outcome, path, out?, originalBytes, outputBytes?, savedPercent?, report } where report shows the work: colours before/after, measured PSNR dB, metadata removed per segment, encoder used, and why the decision fell the way it did.

Input parameters:

- `format` (string): Output format, default "same" (no conversion). webp/avif honour mode: lossy at the mapped quality, or true lossless.
- `mode` (string): smart (default) = visually-guarded lossy; lossless = pixels byte-identical, metadata and encoding only.
- `out` (string): Absolute output path. Default: alongside the input as <name>-compressed.<ext> (extension follows `format`). Never overwrites an existing file.
- `path` (string, required): Absolute path to the PNG or JPEG file to compress.
- `quality` (integer): 0-100, default 60. In smart mode this sets the PNG PSNR floor (30 + q*0.1 dB) and the mozjpeg/WebP/AVIF encoder quality. Ignored in lossless mode.

### `convert_image` (~591 tokens)

Convert/resize an image file to a format or marketplace preset (local)

Convert a local image between PNG, JPEG, WebP and AVIF, optionally resizing it, with the same engine as the yaktool web converter (5 documented behaviours). MARKETPLACE PRESETS: pass preset (amazon-main | gmc | ebay) to get that platform's target format and size, and the output is RECHECKED against the platform's published rules — the result carries a per-rule verdict list (recheck.verdicts, rule IDs MED-*/IMG-S01) and recheck.allPass, so you can tell the user whether the file is actually right for the platform, not just converted. RESIZING: fit (default) scales inside the box and never crops; crop fills and centre-crops; pad scales inside and fills with white. A single dimension always scales proportionally. UPSCALING IS REFUSED BY DEFAULT: when the target is larger than the source, the image keeps its size and the result says so (ICV-002) — stretching adds blur, not detail. Pass allowUpscale: true only when the user explicitly accepts that. HONEST BY CONSTRUCTION: animated GIFs are refused rather than flattened (ICV-001); JPEG output composites transparency onto white and says so (ICV-004); metadata (EXIF/GPS) is not carried over and the report says what was dropped (ICV-003). GIF/BMP input is browser-only — this tool takes PNG, JPEG, WebP, AVIF. HEIC is not supported anywhere (LGPL+HEVC patent stack, documented on the web page). GUARANTEES: the input file is never modified; an existing output file is never overwritten. Returns { outcome, path, out?, report{ inputFormat, outputFormat, before{w,h,bytes}, after{w,h,bytes}, resizeApplied?, skippedUpscale?, alphaFlattened?, metadataBytesRemoved?, encoder, findings[], recheck? } }.

Input parameters:

- `allowUpscale` (boolean): Default false: refuse to scale up, keep the original size and report ICV-002 instead.
- `fit` (string): How to reach an exact width×height: fit (never crop, default), crop (centre-crop), pad (white borders).
- `height` (integer): Target height in px.
- `out` (string): Absolute output path. Default: alongside the input as <name>-converted.<ext>. Never overwrites an existing file.
- `path` (string, required): Absolute path to the PNG, JPEG, WebP or AVIF file to convert.
- `preset` (string): Marketplace preset: sets target format and size, and enables the platform recheck.
- `target` (string): Output format. Defaults to the preset's format, or jpeg when no preset is given.
- `width` (integer): Target width in px. Overrides the preset size when given.

## Diagnostics

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

## Score history

- 2026-09-20: 76
- 2026-09-19: 75
- 2026-09-18: 75
- 2026-09-17: 74
- 2026-09-16: 74
- 2026-09-15: 73
- 2026-09-14: 73
- 2026-09-13: 72
- 2026-09-12: 72
- 2026-09-11: 71
- 2026-09-10: 71
- 2026-09-09: 71
- 2026-09-08: 70
- 2026-09-07: 70
- 2026-09-06: 69
- 2026-09-05: 69
- 2026-09-04: 68
- 2026-09-03: 68
- 2026-09-02: 67
- 2026-09-01: 67
- 2026-08-31: 66
- 2026-08-30: 66
- 2026-08-29: 65
- 2026-08-28: 65
- 2026-08-27: 64
- 2026-08-26: 52
- 2026-08-25: 63

## Common questions

### What is the com.yaktool/image MCP server?

com.yaktool/image is an MCP server listed in the public MCP registry as com.yaktool/image. Compress, convert and resize images locally, with marketplace presets and rule rechecks. This page covers its npm package (yaktool-image-mcp).

### Is the com.yaktool/image MCP server safe to use?

com.yaktool/image scores 76 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. It declares no install or post-install scripts. 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 com.yaktool/image MCP server expose?

com.yaktool/image exposes 2 tools: compress_image, convert_image. Their descriptions and schemas cost roughly 1,056 tokens of context every time the server is loaded.

### Is the com.yaktool/image MCP server still maintained?

com.yaktool/image 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 com.yaktool/image MCP server under?

com.yaktool/image 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

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