ChangeThisFile
REMOTE · CHANGETHISFILE.COM · SCANNED SEP 20
1,000+ conversion routes plus translate, extract tables, compress. 25 free/month, then a free key.
Available components
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 Security46
- 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 2 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 enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- 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 Usability71
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1239 tokens (~177/item across 7 items; 7 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 Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 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
How do I install the ChangeThisFile MCP server?
ChangeThisFile is a hosted endpoint at https://changethisfile.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 · changethisfile.com
claude mcp add --transport http com-changethisfile-mcp 'https://changethisfile.com/mcp'
{
"mcpServers": {
"com-changethisfile-mcp": {
"url": "https://changethisfile.com/mcp"
}
}
} {
"servers": {
"com-changethisfile-mcp": {
"type": "http",
"url": "https://changethisfile.com/mcp"
}
}
} [mcp_servers.com-changethisfile-mcp] url = "https://changethisfile.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-changethisfile-mcp": {
"type": "remote",
"url": "https://changethisfile.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-changethisfile-mcp --url 'https://changethisfile.com/mcp' --transport streamable-http
mcp_servers:
com-changethisfile-mcp:
url: "https://changethisfile.com/mcp" {
"McpServers": {
"com-changethisfile-mcp": {
"Transport": "http",
"Url": "https://changethisfile.com/mcp"
}
}
} assistant mcp add com-changethisfile-mcp -t streamable-http -u 'https://changethisfile.com/mcp'
{
"mcpServers": {
"com-changethisfile-mcp": {
"type": "http",
"url": "https://changethisfile.com/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 +4
- Stability: 0.97 → pass security
- Tool “convert_file” rewrote its description, which is the text the model reads security
- MCP protocol: fail → pass ▲ functional
- MCP protocol version: 2025-03-26 → 2025-11-25 functional
- Server version: 1.3.0 → 1.4.0 functional
- 23 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 7 Aug 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “convert_file” rewrote its description, which is the text the model reads security
- Server version: 1.2.0 → 1.3.0 functional
- 6 Aug 26 0
- “convert_file” reworded the description of “filename” cosmetic
- “convert_file” reworded the description of “source_format” cosmetic
2 cosmetic changes on this day. Switch on “Show cosmetic changes” to see them.
- 31 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
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 20 Sept 2026 · Probed https://changethisfile.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=changethisfile.com | CN=YE2,O=Let's Encrypt,C=US | 15 Aug 2026 | 13 Nov 2026 | ECDSA 256 | ECDSA-SHA384 | 56290b36669cd455e283dc60881a5b40ab2 |
| SANs: *.changethisfile.com, changethisfile.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 changethisfile.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| changethisfile.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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://changethisfile.com/mcp | Verified | 200 | |
| http (plaintext) | http://changethisfile.com/mcp | Inconclusive | 405 |
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 →
check_job Check Job Status ~71
Check the status of a previously submitted file job (translate_file, extract_tables, compress_file). Returns the current status, preview + checkout link for completed paid jobs, or the download URL for completed free/paid-and-unlocked jobs.
| Name | Type | Req | Description |
|---|---|---|---|
| job_id | string | yes | The job_id returned by a job tool |
No output schema declared.
No examples provided.
compress_file Compress File to Exact Size (free) ~195
Compress a file (PDF, JPG, PNG, WebP, MP4, MOV, WebM) down to an exact target size — e.g. "under 5MB for an upload form". FREE (daily limit applies). Returns a download URL on success; if the target is physically unreachable it fails honestly and reports the smallest achievable size. Provide EITHER source_url OR base64_content, plus a filename with extension.
| Name | Type | Req | Description |
|---|---|---|---|
| base64_content | string | – | Base64-encoded file content (for small files) |
| filename | string | – | Filename WITH extension (e.g. "report.pdf"). Required when the format cannot be inferred from source_url. |
| source_url | string | – | Publicly accessible URL of the input file (preferred for large files) |
| target_size_kb | integer | yes | Target maximum size in kilobytes (e.g. 5120 for 5MB). Min 50KB. |
No output schema declared.
No examples provided.
convert_file Convert File ~254
Convert a file from one format to another. Anonymous callers get 25 free conversions per month per network; after that a free verified ChangeThisFile API key is required (25/month shared across REST + MCP; send it as Authorization: Bearer ctf_sk_…). Pass EITHER a publicly accessible URL (source_url) OR base64-encoded file contents (base64_content + source_format) — exactly one is required. Returns a temporary download URL (valid 1 hour; file deleted within 24 hours).
| Name | Type | Req | Description |
|---|---|---|---|
| base64_content | string | – | Base64-encoded file content (for small files; max ~5MB) |
| filename | string | – | Optional filename hint for auto-detection (e.g. "document.docx"). Include this for extensionless download URLs when known. |
| source_format | string | – | Source format extension (e.g. "docx", "mp4"). Optional: detected from filename, URL response filename, or file bytes when omitted. |
| source_url | string | – | Publicly accessible URL of the file to convert (preferred for large files) |
| target_format | string | yes | Target format extension (e.g. "json", "mp3", "pdf"). Required. |
No output schema declared.
No examples provided.
do_file_job Do Something to a File (natural language) ~189
Describe what you want done to a file in plain language — e.g. "translate this contract to German", "pull every table out of this PDF into Excel", "shrink this video to under 25MB", "convert this to PDF". The instruction is routed to the right job automatically; if the request is not supported yet you get an honest explanation of what is. Provide EITHER source_url OR base64_content, plus a filename with extension.
| Name | Type | Req | Description |
|---|---|---|---|
| base64_content | string | – | Base64-encoded file content (for small files) |
| filename | string | – | Filename WITH extension (e.g. "report.pdf"). Required when the format cannot be inferred from source_url. |
| instruction | string | yes | What to do with the file, in plain language (any language) |
| source_url | string | – | Publicly accessible URL of the input file (preferred for large files) |
No output schema declared.
No examples provided.
extract_tables Extract Tables to Excel (paid, free preview) ~156
Extract every table from a PDF or image (PNG, JPG, WebP) into a clean multi-sheet Excel file. The job runs immediately and returns a FREE preview of the first table plus a secure Stripe checkout link — the full .xlsx unlocks after payment ($3.99, one-time, no account needed). Provide EITHER source_url OR base64_content, plus a filename with extension.
| Name | Type | Req | Description |
|---|---|---|---|
| base64_content | string | – | Base64-encoded file content (for small files) |
| filename | string | – | Filename WITH extension (e.g. "report.pdf"). Required when the format cannot be inferred from source_url. |
| source_url | string | – | Publicly accessible URL of the input file (preferred for large files) |
No output schema declared.
No examples provided.
list_conversions List Supported Conversions ~58
List all supported conversion routes. Optionally filter by source format to see what you can convert FROM a specific format.
| Name | Type | Req | Description |
|---|---|---|---|
| source_format | string | – | Filter by source format (e.g. "docx" returns all DOCX target options) |
No output schema declared.
No examples provided.
translate_file Translate Document (paid, free preview) ~192
Translate a document into another language with the original layout and formatting preserved (DOCX, PPTX, XLSX, PDF, TXT, MD, SRT, VTT). The job runs immediately and returns a FREE preview of the first pages plus a secure Stripe checkout link — the full translated file unlocks after payment ($4.99, one-time, no account needed). Provide EITHER source_url OR base64_content, plus a filename with extension.
| Name | Type | Req | Description |
|---|---|---|---|
| base64_content | string | – | Base64-encoded file content (for small files) |
| filename | string | – | Filename WITH extension (e.g. "report.pdf"). Required when the format cannot be inferred from source_url. |
| source_url | string | – | Publicly accessible URL of the input file (preferred for large files) |
| target_language | string | yes | Target language name, e.g. "Spanish", "Japanese", "Brazilian Portuguese" |
No output schema declared.
No examples provided.
What is the ChangeThisFile MCP server?
ChangeThisFile is an MCP server listed in the public MCP registry as com.changethisfile/mcp. 1,000+ conversion routes plus translate, extract tables, compress. 25 free/month, then a free key. This page covers its hosted endpoint (https://changethisfile.com/mcp).
Is the ChangeThisFile MCP server safe to use?
ChangeThisFile scores 73 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 ChangeThisFile MCP server expose?
ChangeThisFile exposes 7 tools: convert_file, list_conversions, translate_file, extract_tables, compress_file, and 2 more. Their descriptions and schemas cost roughly 1,115 tokens of context every time the server is loaded.
Does the ChangeThisFile MCP server require authentication?
No. We connected to ChangeThisFile without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the ChangeThisFile MCP server still maintained?
ChangeThisFile 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.