Bigapi MCP server

@bigapi/mcp

MCP server for bigapi.dev – the output layer for AI agents.

Your agent produced something. bigapi turns it into a finished file – and reads files back in. Merge, redact, OCR, convert, sign, validate: the operations an LLM cannot do itself, over plain HTTPS, with one key, nothing to install server-side.

$0.01 per operation. 100 free. Free operations and balance never expire. Failed calls are free. Servers in Germany, GDPR, files deleted after delivery. Every operation ships with a published proof that it does what it promises.

Also listed in the official MCP Registry as dev.bigapi/mcp.

Lean by default

The server starts lean: it lists five tools, so your context stays free.

All 40+ operations are available from the first second through runoperation; the dedicated tools are a convenience, not a requirement. Want the full list right away? Set BIGAPITOOLS=all in the server environment.

Why: every tool definition costs context in your client, and a model choosing between five descriptions picks better than one scanning forty-six.

What you can run

All 40+ operations go through runoperation (or their own tool after enabletools). Ask find_tool in plain words instead of memorising this list:

• PDF basics — merge, split, rotate, compress, page info, outline, compare, linearize
• PDF content — to Markdown, to images, extract tables, extract attachments (ZUGFeRD / Factur-X invoice XML)
• PDF safety — redact (rasterise and rebuild, text provably gone), sanitize (JavaScript, actions, embedded files), password on/off, verify signature
• PDF archival — PDF/A-2b with embedded fonts and an output intent, checked with veraPDF
• Documents — Office and e-books to PDF or Markdown (DOCX, XLSX, PPTX, ODT, EPUB), Markdown to Word, .eml to PDF
• Web and rendering — HTML/Markdown/URL to PDF or PNG, full-page screenshots with device presets, HTML or URL to clean Markdown, Handlebars templates, charts, QR codes
• Images — resize, crop, convert (WebP/AVIF/…), compress, strip metadata, watermark, image info
• AI transparency — C2PA Content Credentials sign and verify, visible "AI-generated" label with EXIF marking (EU AI Act Art. 50)
• Text for RAG — token-based chunking, heading-aware, with overlap
• Account — free key, balance, usage, monthly cap, pricing

Install

Requires Node 18+. No API key needed up front – the agent can call get_access itself.

Claude Desktop

claudedesktopconfig.json (Settings → Developer → Edit Config):

{
  "mcpServers": {
    "bigapi": {
      "command": "npx",
      "args": ["-y", "@bigapi/mcp"]
    }
  }
}

Restart Claude Desktop. Then: "Get bigapi access and render this text as a PDF on my Desktop."

Cursor / Windsurf / Cline

Same block in the respective MCP settings (.cursor/mcp.json, ~/.codeium/windsurf/mcp_config.json, Cline → MCP Servers → Configure).

With an existing key

"bigapi": { "command": "npx", "args": ["-y", "@bigapi/mcp"], "env": { "BIGAPI_KEY": "bigapi_..." } }

How files work

Shortened. The full README is on GitHub.