MCP SERVERConvert, translate, compress or table-extract a file from chat — with a free preview before anything is charged.
LABSCO SUMMARY
Translation and table extraction return a preview and a checkout link rather than a bill, so an agent can put the result in front of you and let you decide. Conversion and compression are free within the quota — which means the calls that cost money are exactly the ones that ask first.
A client for ChangeThisFile's hosted file service. It converts between formats, translates documents with the layout preserved, pulls tables out of PDFs and images into Excel, compresses a file to an exact size, and routes a plain-language instruction to whichever of those it needs.
Point a client at https://changethisfile.com/mcp over Streamable HTTP, or run the stdio bridge with npx -y github:aadilr/changethisfile-mcp. CTF_API_KEY is optional and forwarded as a bearer token; without one you get 25 free conversions per month per network. A free verified key from the ChangeThisFile dashboard shares that quota across MCP and REST. CTF_MCP_URL overrides the upstream endpoint. MCP inputs are capped at 25 MB, files are auto-deleted within 24 hours, and download URLs expire after 1 hour.
One command — claude mcp add --transport http changethisfile https://changethisfile.com/mcp
USE CASES
Check the route exists, then convert it and get a download link back.
Preview the first table for free, then unlock the full multi-sheet workbook if it looks right.
Compress to a stated maximum, and get told plainly when the target cannot be reached.
One plain-language instruction routed to conversion, translation, extraction or compression.
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
check_jobCheck 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.
compress_fileCompress 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.
convert_fileConvert a file from one format to another. Add a verified ChangeThisFile API key for the shared developer allowance (25 free conversions/month); anonymous access is temporary compatibility mode. 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).
do_file_jobDescribe 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.
extract_tablesExtract 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.
list_conversionsList all supported conversion routes. Optionally filter by source format to see what you can convert FROM a specific format.
translate_fileTranslate 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.
BEFORE YOU INSTALL
7 tools when we connected. The 1,000+ figure counts conversion routes through convert_file, not tools; list_conversions shows which apply to a format. do_file_job takes a plain-language instruction and routes it to another tool.
A client that can reach a remote MCP server over HTTP
CONTEXT COST
Rated by the size of the 7 tool definitions that ride along on every turn, not by how many there are
INSTALLATION
claude mcp add --transport http changethisfile https://changethisfile.com/mcphttps://changethisfile.com/mcpAdd this hosted endpoint to your MCP client.
{
"mcpServers": {
"changethisfile": {
"type": "streamable-http",
"url": "https://changethisfile.com/mcp"
}
}
}Clients spell the "type" value differently: Claude Code and VS Code use "http", Cline uses "streamableHttp", and Roo Code uses "streamable-http". Claude Desktop does not accept a URL entry in its config file; remote servers go under Settings → Connectors.
{
"mcpServers": {
"changethisfile": {
"command": "npx",
"args": [
"-y",
"github:aadilr/changethisfile-mcp"
],
"env": {
"CTF_API_KEY": "<YOUR_CTF_API_KEY>"
}
}
}
}git clone https://github.com/aadilr/changethisfile-mcp.git
cd changethisfile-mcp
npm install
node index.jsnpx skills add aadilr/changethisfile-mcp/plugin marketplace add aadilr/changethisfile-mcp
/plugin install changethisfile@changethisfilegit clone https://github.com/aadilr/changethisfile-mcp.git
cd changethisfile-mcp
docker build -t changethisfile-mcp .
docker run -i --rm -e CTF_API_KEY changethisfile-mcpMCP servers
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