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SylphxAI/pdf-reader-mcp

⭐ 1066 TypeScript repository created 2025-04-04

Citra, published from the pdf-reader-mcp repository as the npm package @sylphx/citra, is a PDF reading layer for AI agents. It runs as a stdio MCP server started with a single npx command, needing no Docker, API key or global install, and the same code is also available as a command line tool and as an SDK import. Registration snippets are provided for Claude Code, Claude Desktop, Cursor, VS Code, Codex and any other MCP client, and hosts that send server discovery before initialize are supported on stdio. The tool surface is deliberately small. read_pdf is the default path and returns markdown, tables, document structure, OCR output and citations. search_pdf finds pages and snippets before a deeper read. pdf_evidence handles crops, renders, inspection and other focused evidence operations. The stated design goal is that an agent should be able to defend an answer rather than guess it, so results carry page numbers, bounding-box geometry and provenance, tables keep their rows, columns and cells instead of collapsing into flat text, and scanned documents go through an OCR path whose output stays linked to the page evidence. Trust signals for hidden or adversarial text can be requested. Processing is local, so PDFs never require a cloud vision service. The engine itself is a native Rust binary selected per platform through an optional npm package for macOS arm64 and x64, Linux x64 and arm64, and Windows x64; if the native package is missing the server fails closed rather than silently falling back to a JavaScript PDF engine. The maintainers document the resulting install footprint against the earlier TypeScript lineage, reporting a substantially smaller node_modules tree and far fewer installed files. The repository also carries positioning, competitive, evidence contract and tool surface documents plus an agent skill definition, and typical uses named are financial reports, research papers and scanned documents.

https://github.com/SylphxAI/pdf-reader-mcp

mcppdfocrdocument-processingcitationsragrusttypescriptlocal-firstagent-tools

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