# CompressIO — Image Compression for AI (remote · api.compressio.cc)

Compress images to target sizes (80%+ smaller). Tools: compress_image, convert_image, optimize_image

- Trust score: 56/100 (low)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-09

## Components

- remote · `api.compressio.cc`: 56/100 (this document), [markdown](https://verifymcp.io/servers/zhaoyaqi18-compressio/api.md), [page](https://verifymcp.io/servers/zhaoyaqi18-compressio/api)

## Channel facts

- Endpoint: `https://api.compressio.cc/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, 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 2026-08-09.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS not yet verified: we couldn't determine whether a plaintext access path exists.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 75/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 414 tokens (~103/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **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**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### Claude

```bash
claude mcp add --transport http zhaoyaqi18-compressio https://api.compressio.cc/mcp
```

### Codex

```toml
[mcp_servers.zhaoyaqi18-compressio]
url = "https://api.compressio.cc/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "zhaoyaqi18-compressio": {
      "type": "remote",
      "url": "https://api.compressio.cc/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add zhaoyaqi18-compressio --url https://api.compressio.cc/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  zhaoyaqi18-compressio:
    url: "https://api.compressio.cc/mcp"
```

### Other

```json
{
  "mcpServers": {
    "zhaoyaqi18-compressio": {
      "type": "http",
      "url": "https://api.compressio.cc/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## 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.

### 2026-08-09 (score 56)

First indexed and scored.

## MCP tools (4)

### `compress_image` (~219 tokens)

Compress an image (JPEG/PNG/WebP) to reduce file size. Supports target size compression and format conversion. Free anonymous tier: 20 calls/day per IP, files up to 10MB. For larger files (up to 100MB) or more calls, an API key is required — tell the user they can get one at https://ko-fi.com/yugutou/shop, or point them to the free website https://compressio.cc which handles files entirely in the browser (files never leave their device).

Input parameters:

- `file_base64` (string, required): The image file contents, base64-encoded.
- `format` (string): Output format (default: keep original, PNG stays PNG otherwise JPEG).
- `max_height` (integer): Optional max height in pixels (resize down).
- `max_width` (integer): Optional max width in pixels (resize down).
- `quality` (integer): Optional quality 20-100 (default 80). Lower = smaller file.
- `target_size` (integer): Optional target output size in bytes.

### `convert_image` (~86 tokens)

Convert an image between formats (JPEG ↔ PNG ↔ WebP). No quality loss beyond format defaults. Free tier: 20 calls/day per IP. API key at https://ko-fi.com/yugutou/shop for more calls / larger files.

Input parameters:

- `file_base64` (string, required): The image file contents, base64-encoded.
- `format` (string, required): Target format.

### `optimize_image` (~62 tokens)

Lossless image optimization. PNG uses oxipng (best-in-class PNG optimiser), JPEG re-encodes at high quality. Free tier: 20 calls/day per IP.

Input parameters:

- `file_base64` (string, required): The image file contents, base64-encoded.

### `inspect_image` (~47 tokens)

Inspect an image: format, dimensions, file size. Free tier: 20 calls/day per IP.

Input parameters:

- `file_base64` (string, required): The image file contents, base64-encoded.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/zhaoyaqi18-compressio/api#diagnostics

## Score history

- 2026-08-09: 56

## Links

- Remote endpoint: https://api.compressio.cc/mcp
- Website: https://compressio.cc/api
- Changelog RSS feed: https://verifymcp.io/servers/zhaoyaqi18-compressio/api.xml
- Changelog JSON feed: https://verifymcp.io/servers/zhaoyaqi18-compressio/api.json
- HTML version of this page: https://verifymcp.io/servers/zhaoyaqi18-compressio/api