MCP (Model Context Protocol) server for Pressa - a LaTeX-to-PDF compilation service. This server lets AI assistants compile LaTeX documents and check API usage through a standardized interface.

Setup

Add this to your MCP client configuration (e.g. Claude Desktop, Cursor):

{
  "mcpServers": {
    "pressa": {
      "command": "npx",
      "args": ["-y", "@pressa/mcp"],
      "env": {
        "PRESSA_API_KEY": "pressa_your_key_here"
      }
    }
  }
}

Environment Variables

Variable	Required	Default	Description
`PRESSA_API_KEY`	Yes	-	Your Pressa API key (starts with `pressa_`)
`PRESSA_API_URL`	No	`https://api.pressa.dev`	API base URL

Tools

`compile`

Compile LaTeX source code into a PDF.

Input:

Parameter	Type	Required	Description
`latex`	string	Yes	Complete LaTeX source code. Must contain `\documentclass`, `\begin{document}`, `\input{}`, or `\include{}`. Plain text, markdown, or raw notes are rejected with `not_latex_source` (422). The AI agent should generate LaTeX itself, not bounce back to the user.
`compiler`	string	No	`"pdflatex"` (default), `"xelatex"`, or `"lualatex"` (Pro and Business plans only)

Each plan has limits on pages per document, LaTeX source size, PDF output size, and compile timeout. If a compile exceeds your plan's page limit, the document does not count against your monthly quota and the MCP response includes the limit and an upgrade URL. Non-LaTeX input is rejected with a structured requirements list and an example_template so the LLM can self-correct without user intervention.

Output (success):

{
  "job_id": "ffc2bd62-3b67-45d6-be14-b529c4b9489f",
  "pdf_url": "https://api.pressa.dev/api/v1/pdfs/ffc2bd62...?sig=xxx&exp=xxx",
  "expires_at": "2026-04-09T20:44:55Z",
  "pages": 1,
  "compilation_time_ms": 359,
  "usage": {
    "plan": "free",
    "compilations_this_month": 9,
    "monthly_limit": 50
  }
}

Output (error): Compilation log and error line number.

`usage`

Get current API usage statistics.

Input: None.

Output:

{
  "user": {
    "email": "user@example.com",
    "username": "user",
    "plan": "free"
  },
  "usage": {
    "compilations_this_month": 9,
    "monthly_limit": 50,
    "remaining": 41,
    "resets_at": "2026-04-30T23:59:59Z"
  },
  "api_key": {
    "prefix": "pressa_a",
    "name": "my-key",
    "total_requests": 15,
    "last_used_at": "2026-04-08T20:44:55Z"
  }
}