x402-gateway Document to Markdown (Auto-Detect)

x402

x402-gateway Document to Markdown (Auto-Detect) is a paid API for AI agents from x402.freeq.one, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).

Converts any document (PDF, DOCX, PPTX, XLSX, CSV, EPUB, HTML, or plain text) to clean Markdown with automatic format detection, via a URL or base64 bytes, paid per-call in USDC on Base via x402.

Price / call$0.01

Seller volume →—

Success—

StatusUnknown

How this service works

Document to Markdown (auto-detect): Convert any document to Markdown with automatic format detection. One endpoint for pdf, docx, pptx, xlsx, csv, epub, html and plain text — provide a URL or base64 bytes and the type is detected from the file contents. Spreadsheets return both a Markdown table and a JSON array of rows. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/document_to_markdown.

Output

Returns a JSON object with a 'result' field containing the converted Markdown text. For spreadsheet formats (XLSX, CSV), also includes a Markdown table representation and a JSON array of rows. Output may be truncated if max_length is specified.

Example use cases

Research PDF ingestion for RAG pipeline

“I need to convert this academic paper PDF at https://example.com/paper.pdf into Markdown so I can chunk it and load it into my retrieval-augmented generation system — please auto-detect the format and give me the full text.”

Excel report to structured data

“Can you convert this Excel spreadsheet at https://example.com/quarterly_report.xlsx into both a Markdown table and a JSON array of rows? I want to be able to read the data easily and process it programmatically.”

PowerPoint slides to readable text

“Turn this PowerPoint presentation at https://example.com/deck.pptx into Markdown so I can read through the slide content as plain text — limit the output to 30000 characters.”

Technical details

Endpoint

POSThttps://x402.freeq.one/tools/document_to_markdown?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need to convert any of a wide variety of document formats (PDF, DOCX, PPTX, XLSX, CSV, EPUB, HTML, plain text) to Markdown in a single unified call without knowing the format in advance. Prefer it over format-specific sibling endpoints (like the dedicated PDF-to-Markdown or XLSX-to-Markdown tools) when the document type is unknown or mixed, or when you want a single integration point. Ideal for LLM data preparation pipelines where documents arrive in heterogeneous formats.

Side effects

URL is inaccessible or returns a non-200 response — endpoint cannot fetch the document
Document format cannot be detected from file contents — returns an error
Base64 payload exceeds 28MB maximum — request rejected
Unsupported or corrupted file — parsing fails with an error
Payment not provided or insufficient USDC — x402 payment required error returned
max_length too small to capture meaningful content — output truncated aggressively

Input

Schema · Request body

Field	Type	Description
url	string	Direct URL to any supported document (pdf, docx, pptx, xlsx, csv, epub, html, text)
file_b64	string	Base64-encoded document bytes (alternative to url)
max_length	integer	Truncate output to N characters

Output

Schema · Response

{
  "type": "json",
  "example": {
    "result": {}
  }
}

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