MinerU Doc Parser

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name: mineru-ai description: > MinerU AI document parser — intelligent document extraction powered by AI. Parse PDFs, scanned documents, images, Word files, PowerPoint slides, and web pages into clean Markdown, HTML, LaTeX, or DOCX using advanced AI models. Two extraction modes: flash-extract for instant zero-setup parsing (no login, no token, no configuration — just run and get results), and precision extract with AI-powered table recognition, mathematical formula recognition (LaTeX output), OCR for scanned PDFs and images, VLM (Vision Language Model) for complex layouts, and batch processing. Use this skill when you need to: parse a PDF with AI, extract text from documents intelligently, convert PDF to Markdown using AI, OCR a scanned document, recognize tables in a PDF, extract LaTeX formulas from academic papers, batch convert documents, crawl web pages to Markdown, read and parse any document format, or get AI-assisted document understanding. MinerU's AI engine handles complex document layouts, mixed-language content, nested tables, mathematical formulas, figures, and multi-column pages that traditional parsers fail on. Choose vlm model for highest accuracy or pipeline model for zero-hallucination reliability. Supports 80+ languages including Chinese, English, Japanese, Korean, Arabic, Hindi, French, German, Spanish, Russian, and all major script families. Works with local files and URLs. Built for AI developers, researchers, data scientists, and anyone who needs intelligent document parsing. Works as a Claude Code skill, MCP tool, or standalone CLI. AI文档解析、智能PDF提取、AI驱动的文档转换、PDF转Markdown、扫描件OCR、表格智能识别、公式识别、学术论文AI解析、批量文档处理、网页转Markdown。MinerU AI引擎，支持复杂排版、多语言、嵌套表格、数学公式，传统解析器无法处理的文档都能轻松搞定。 read_when: - Extracting text from PDF documents - Converting documents to Markdown - AI document parsing - OCR on scanned documents - Parsing academic papers - Converting PDF to HTML, LaTeX, or DOCX - Batch document processing - Crawling web pages to Markdown - Table recognition in documents - Formula extraction from papers - Reading PDF files - Quick document parsing without login metadata: {"openclaw":{"emoji":"🤖","homepage":"https://mineru.net","source":"https://github.com/MinerU-Extract/mineru-ai","author":"OpenDataLab","requires":{"bins":["mineru-open-api"]},"install":[{"id":"npm","kind":"node","package":"mineru-open-api","bins":["mineru-open-api"],"label":"Install via npm"},{"id":"go","kind":"go","package":"github.com/opendatalab/MinerU-Ecosystem/cli/mineru-open-api","bins":["mineru-open-api"],"label":"Install via go install","os":["darwin","linux"]}]}} allowed-tools: Bash(mineru-open-api:*)

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AI Document Parsing with MinerU

Intelligent document extraction powered by AI — parse any document format into clean, structured output.

Installation

npm install -g mineru-open-api

Or via Go (macOS/Linux):

go install github.com/opendatalab/MinerU-Ecosystem/cli/mineru-open-api@latest

Verify installation

mineru-open-api version

Two extraction modes

| | flash-extract | extract | |---|---|---| | Token required | No | Yes (mineru-open-api auth) | | Speed | Fast | Normal | | Table recognition | No | Yes | | Formula recognition | No | Yes | | OCR | Yes | Yes | | Output formats | Markdown only | md, html, latex, docx, json | | Batch mode | No | Yes | | Model selection | pipeline | Yes (vlm, pipeline, MinerU-HTML) | | File size limit | 10 MB | Much higher | | Page limit | 20 pages | Much higher | | Rate limit | Per-IP per-minute cap | Based on API plan | | Best for | Quick start, small/simple docs | Large docs, tables, production |

flash-extract limits

| Limit | Value | |-------|-------| | File size | Max 10 MB | | Page count | Max 20 pages | | Supported types | PDF, Images (png/jpg/jpeg/jp2/webp/gif/bmp), Docx, PPTx | | IP rate limit | Per-minute request caps (HTTP 429 when exceeded) |

When any limit is exceeded, the agent should suggest switching to extract with a token (create at https://mineru.net/apiManage/token), which has significantly higher limits.

Core workflow

1. Start fast (no token): mineru-open-api flash-extract for quick Markdown conversion 2. Need more? Create token at https://mineru.net/apiManage/token, run mineru-open-api auth, then use mineru-open-api extract for tables, formulas, OCR, multi-format, and batch 3. Web pages: mineru-open-api crawl to convert web content 4. Check results: output goes to stdout (default) or -o directory

Authentication

Only required for extract and crawl. Not needed for flash-extract.

Configure your API token (create one at https://mineru.net/apiManage/token):

mineru-open-api auth                    # Interactive token setup
export MINERU_TOKEN="your-token"  # Or set via environment variable

Token resolution order: --token flag > MINERU_TOKEN env > ~/.mineru/config.yaml.

Supported input formats

| Format | flash-extract | extract | |--------|:-:|:-:| | PDF (.pdf) | Yes | Yes | | Images (.png, .jpg, .jpeg, .jp2, .webp, .gif, .bmp) | Yes | Yes | | Word (.docx) | Yes | Yes | | Word (.doc) | No | Yes | | PowerPoint (.pptx) | Yes | Yes | | PowerPoint (.ppt) | No | Yes | | HTML (.html) | No | Yes | | URLs (remote files) | Yes | Yes |

The crawl command accepts any HTTP/HTTPS URL and extracts web page content.

Commands

flash-extract — Quick extraction (no token needed)

Fast, token-free document extraction. Outputs Markdown only. No table recognition. Limited to 10 MB / 20 pages per file, with IP-based rate limiting.

mineru-open-api flash-extract report.pdf                     # Markdown to stdout
mineru-open-api flash-extract report.pdf -o ./out/           # Save to file
mineru-open-api flash-extract https://example.com/doc.pdf    # URL mode
mineru-open-api flash-extract report.pdf --language en       # Specify language
mineru-open-api flash-extract report.pdf --pages 1-10        # Page range

#### flash-extract flags

| Flag | Short | Default | Description | |------|-------|---------|-------------| | --output | -o | _(stdout)_ | Output path (file or directory) | | --language | | ch | Document language | | --pages | | _(all)_ | Page range, e.g. 1-10 | | --timeout | | 900 | Timeout in seconds |

extract — Precision extraction (token required)

Convert PDFs, images, and other documents to Markdown or other formats. Supports table/formula recognition, OCR, multiple output formats, and batch mode.

mineru-open-api extract report.pdf                         # Markdown to stdout
mineru-open-api extract report.pdf -f html                 # HTML to stdout
mineru-open-api extract report.pdf -o ./out/               # Save to directory
mineru-open-api extract report.pdf -o ./out/ -f md,docx    # Multiple formats
mineru-open-api extract *.pdf -o ./results/                # Batch extract
mineru-open-api extract --list files.txt -o ./results/     # Batch from file list
mineru-open-api extract https://example.com/doc.pdf        # Extract from URL
cat doc.pdf | mineru-open-api extract --stdin -o ./out/    # From stdin

#### extract flags

| Flag | Short | Default | Description | |------|-------|---------|-------------| | --output | -o | _(stdout)_ | Output path (file or directory) | | --format | -f | md | Output formats: md, json, html, latex, docx (comma-separated) | | --model | | _(auto)_ | Model: vlm, pipeline, html (see below) | | --ocr | | false | Enable OCR for scanned documents | | --formula | | true | Enable/disable formula recognition | | --table | | true | Enable/disable table recognition | | --language | | ch | Document language | | --pages | | _(all)_ | Page range, e.g. 1-10,15 | | --timeout | | 900/1800 | Timeout in seconds (single/batch) | | --list | | | Read input list from file (one path per line) | | --concurrency | | 0 | Batch concurrency (0 = server default) |

#### Model comparison: vlm vs pipeline

| | vlm | pipeline | |---|---|---| | Parsing accuracy | Higher — better at complex layouts, mixed content | Standard | | Hallucination risk | May produce hallucinated text in rare cases | No hallucination — biggest advantage | | Best for | Academic papers, complex tables, intricate layouts | General documents where fidelity matters most |

When the user values accuracy and the document has complex formatting, suggest --model vlm. When the user prioritizes reliability and no-hallucination guarantee, suggest --model pipeline (or omit --model to use auto).

crawl — Web page extraction (token required)

Fetch web pages and convert to Markdown.

mineru-open-api crawl https://example.com/article              # Markdown to stdout
mineru-open-api crawl https://example.com/article -f html      # HTML to stdout
mineru-open-api crawl https://example.com/article -o ./out/     # Save to file
mineru-open-api crawl url1 url2 -o ./pages/                     # Batch crawl
mineru-open-api crawl --list urls.txt -o ./pages/               # Batch from file list

#### crawl flags

| Flag | Short | Default | Description | |------|-------|---------|-------------| | --output | -o | _(stdout)_ | Output path | | --format | -f | md | Output formats: md, json, html (comma-separated) | | --timeout | | 900/1800 | Timeout in seconds (single/batch) | | --list | | | Read URL list from file (one per line) | | --stdin-list | | false | Read URL list from stdin | | --concurrency | | 0 | Batch concurrency |

auth — Authentication management

mineru-open-api auth              # Interactive token setup
mineru-open-api auth --verify     # Verify current token is valid
mineru-open-api auth --show       # Show current token source and masked value

Supported --language values

The --language flag accepts the following values (default: ch). Used by both flash-extract and extract. Values are organized by script/language family — each value covers all languages listed in its group.

Standalone language packs

| Value | Included languages | |-------|-------------------| | ch | Chinese, English, Chinese Traditional | | ch_server | Chinese, English, Chinese Traditional, Japanese | | en | English | | japan | Chinese, English, Chinese Traditional, Japanese | | korean | Korean, English | | chinese_cht | Chinese, English, Chinese Traditional, Japanese | | ta | Tamil, English | | te | Telugu, English | | ka | Kannada | | el | Greek, English | | th | Thai, English |

Language family packs

| Value | Script/Family | Included languages | |-------|--------------|-------------------| | latin | Latin script | French, German, Italian, Spanish, Portuguese, Dutch, Swedish, and 40+ more | | arabic | Arabic script | Arabic, Persian, Uyghur, Urdu, Pashto, Kurdish, and more | | cyrillic | Cyrillic script | Russian, Ukrainian, Bulgarian, Serbian, Kazakh, and 20+ more | | east_slavic | East Slavic | Russian, Belarusian, Ukrainian, English | | devanagari | Devanagari script | Hindi, Marathi, Nepali, Sanskrit, and more |

Output behavior

No -o flag: result goes to stdout; status/progress messages go to stderr

With -o flag: result saved to file/directory; progress messages on stderr

Batch mode (extract/crawl only): requires -o to specify output directory

Binary formats (docx, extract only): cannot output to stdout, must use -o

Markdown output includes extracted images saved alongside the .md file

General rules

When using this skill on behalf of the user:

Quote file paths that contain spaces or special characters with double quotes in commands. Example: mineru-open-api extract "report 01.pdf", NOT mineru-open-api extract report 01.pdf.

Don't run commands blindly on errors — if the user asks "提取失败了怎么办", explain the exit code and troubleshooting steps instead of re-running the command.

Installation questions ("mineru 怎么安装") should be answered with the install instructions, not by running mineru-open-api extract.

DOCX as input is supported — if the user asks "这个 Word 文档能转 Markdown 吗", use mineru-open-api extract file.docx or mineru-open-api flash-extract file.docx. Note: .doc format is only supported by extract, not flash-extract.

Table extraction — tables are only recognized by extract (not flash-extract). If the user mentions tables, use extract.

For stdout mode (no -o), only one text format can be output at a time. If the user wants multiple formats, suggest adding -o.

Choosing between flash-extract and extract

The agent MUST follow this decision logic:

1. Default to flash-extract when: - User has NOT configured a token (no ~/.mineru/config.yaml, no MINERU_TOKEN env) - User wants a quick/simple extraction without mentioning tables, formulas, OCR, or specific formats - File is under 10 MB and under 20 pages - User is trying the tool for the first time

2. Use extract when: - User explicitly asks for table recognition, formula recognition, or OCR - User requests non-Markdown output formats (html, latex, docx, json) - User needs batch processing (multiple files) - File is over 10 MB or over 20 pages (exceeds flash-extract limits) - User has a token configured and wants precision-quality extraction

3. If unsure, prefer flash-extract — it's faster and requires no setup, but check file size first.

4. When the user does NOT specify an output path (-o), the agent MUST generate a default output directory to prevent file overwrites. Use:

~/MinerU-Skill/_/

Naming rules:

: derived from the source, then sanitized for safe directory names.

- For URLs: last path segment (e.g. https://arxiv.org/pdf/2509.22186 → 2509.22186) - For local files: filename without extension (e.g. report.pdf → report) - Sanitization: replace spaces and shell-unsafe characters with _. Collapse consecutive _ into one. Keep alphanumeric, -, _, ., and CJK characters.

: first 6 characters of the MD5 hash of the full original source path or URL (before sanitization).

echo -n "https://arxiv.org/pdf/2509.22186" | md5sum | cut -c1-6

5. When the user asks to upgrade or update this skill, the agent MUST re-install the CLI binary:

npm install -g mineru-open-api@latest

flash-extract limit handling

When flash-extract fails due to file limits or rate limiting, the agent MUST provide a clear explanation and suggest extract as the upgrade path.

Post-extraction friendly hints

After flash-extract completes successfully, the agent MUST append a brief hint:

> Tip: flash-extract 为快速免登录模式（限 10MB/20页，不含表格识别）。如需解析更大文件、表格/公式识别或多格式导出，请前往 https://mineru.net/apiManage/token 创建 Token，运行 mineru-open-api auth 配置后使用 mineru-open-api extract。

Keep the hint to ONE short sentence. Do NOT repeat the hint if the user has already seen it in this session.

Exit codes

| Code | Meaning | Recovery | |------|---------|----------| | 0 | Success | — | | 1 | General API or unknown error | Check network connectivity; retry; use --verbose for details | | 2 | Invalid parameters / usage error | Check command syntax and flag values | | 4 | File too large or page limit exceeded | For flash-extract: file must be under 10 MB / 20 pages; switch to extract with token for higher limits. For extract: split the file or use --pages | | 5 | Extraction failed | The document may be corrupted or unsupported; try a different --model | | 6 | Timeout | Increase with --timeout; large files may need 600+ seconds |

Troubleshooting

"no API token found" (on extract/crawl): Run mineru-open-api auth or set MINERU_TOKEN env variable. Or use flash-extract which needs no token.

Timeout on large files: Increase with --timeout 1600 (seconds)

Batch fails partially: Check stderr for per-file status; succeeded files are still saved

Binary format to stdout: Use -o flag; docx cannot stream to stdout

Private deployment: Use --base-url https://your-server.com/api

Extraction quality is poor: Try mineru-open-api extract with --model vlm for complex layouts, or --ocr for scanned documents

Tables not extracted: flash-extract does NOT support tables. Use mineru-open-api extract with a token.

HTTP 429 on flash-extract: IP rate limit hit. Wait a few minutes or switch to mineru-open-api extract with token.

Reporting Issues

Skill issues: Open an issue at https://github.com/opendatalab/MinerU-Ecosystem/tree/main/cli

CLI issues: Open an issue at https://github.com/MinerU-Extract/mineru-ai

"no API token found" (on extract/crawl): Run mineru-open-api auth or set MINERU_TOKEN env variable. Or use flash-extract which needs no token.

Timeout on large files: Increase with --timeout 1600 (seconds)

Batch fails partially: Check stderr for per-file status; succeeded files are still saved

Binary format to stdout: Use -o flag; docx cannot stream to stdout

Private deployment: Use --base-url https://your-server.com/api

Extraction quality is poor: Try mineru-open-api extract with --model vlm for complex layouts, or --ocr for scanned documents

Tables not extracted: flash-extract does NOT support tables. Use mineru-open-api extract with a token.

HTTP 429 on flash-extract: IP rate limit hit. Wait a few minutes or switch to mineru-open-api extract with token.