MCP Compress
REMOTE · MCP-COMPRESS.CUSTOM-DIGITAL-SERVICES.COM
List compression profiles, estimate gains, and compress images, PDFs, and Office files.
Available components
Last scanned (5 hours ago)
Scores higher than 56% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Documents and Files
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. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability73
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 448 tokens (~149/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management43
- Stability observed for 13 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage67
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 +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.
- 3 Nov 26 +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.
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 25 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 24 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 23 Oct 26 64
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://mcp-compress.custom-digital-services.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=mcp-compress.custom-digital-services.com | CN=YE2,O=Let's Encrypt,C=US | 18 Sept 2026 | 17 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 54df2324f860a14d6258ce662e147c64607 |
| SANs: mcp-compress.custom-digital-services.com | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mcp-compress.custom-digital-services.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| custom-digital-services.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000; includeSubDomains; preload |
| content-security-policy | default-src 'none' |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | no-referrer |
| permissions-policy | geolocation=(), microphone=(), camera=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp-compress.custom-digital-services.com/mcp | Verified | 200 | |
| http (plaintext) | http://mcp-compress.custom-digital-services.com/mcp | HTTPS enforced | 301 | https://mcp-compress.custom-digital-services.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
compress_file ~235
Compress a file and return the result as base64. Pass fileBase64 + fileName. Choose EITHER a preset 'level' (light|balanced|maximum, default balanced) OR a 'custom' profile { imageQuality: 1-100, maxDimension?: px, convertFormat?: webp|avif|jpeg } -- supplying both is rejected. Supported families: images (PNG/JPG/WebP/AVIF), PDF (embedded JPEG images re-encoded, no AGPL tool), and Office OOXML (DOCX/PPTX/XLSX embedded media re-encoded). Returns fileBase64, bytesBefore, bytesAfter, gainPercent, mimeType and the output format. If compression would enlarge a non-converted file, the original is returned with 0% gain. WARNING: convertFormat 'avif' is CPU/RAM heavy (>= 1 GB RAM for large images). Max input size: 26214400 decoded bytes.
| Name | Type | Req | Description |
|---|---|---|---|
| custom | object | – | – |
| fileBase64 | string | yes | – |
| fileName | string | yes | – |
| level | string | – | – |
No output schema declared.
No examples provided.
estimate_compression ~150
Detect a file (family, format, size from magic bytes) and estimate the compression gain by ACTUALLY compressing it. Pass the file as base64 (fileBase64) plus its fileName (the extension disambiguates Office formats). Omit 'level' to estimate all three presets, or set it for a single one. Returns the detected metadata and, per level, the resulting byte size, gain percentage and output format. Max input size: 26214400 decoded bytes; the HTTP body must accept base64 (decoded x 4/3 plus margin).
| Name | Type | Req | Description |
|---|---|---|---|
| fileBase64 | string | yes | – |
| fileName | string | yes | – |
| level | string | – | – |
No output schema declared.
No examples provided.
list_compression_profiles ~63
List the three compression presets (light, balanced, maximum) with their exact image quality and max-dimension caps, a note per preset, and the maximum accepted input size. Values are kept in parity with the Compresseur Local web app. Takes no parameters.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the MCP Compress server?
MCP Compress is a hosted endpoint at https://mcp-compress.custom-digital-services.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · mcp-compress.custom-digital-services.com
claude mcp add --transport http fr-custom-digital-services-mcp-compress 'https://mcp-compress.custom-digital-services.com/mcp'
What is the MCP Compress server?
MCP Compress is listed in the public MCP registry as fr.custom-digital-services/mcp-compress. List compression profiles, estimate gains, and compress images, PDFs, and Office files. This page covers its hosted endpoint (https://mcp-compress.custom-digital-services.com/mcp).
Is the MCP Compress server safe to use?
MCP Compress scores 70 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 MCP Compress server expose?
MCP Compress exposes 3 tools: list_compression_profiles, estimate_compression, compress_file. Their descriptions and schemas cost roughly 448 tokens of context every time the server is loaded.
Does the MCP Compress server require authentication?
No. We connected to MCP Compress without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the MCP Compress server still maintained?
MCP Compress 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.