PDF.co MCP Server

Instructions

Implementation Reference

• pdfco/mcp/tools/apis/conversion.py:780-866 (handler)

  The primary handler function for the 'html_to_pdf' MCP tool. Registered via @mcp.tool() decorator. Defines input schema with Pydantic Fields and delegates conversion logic to the convert_from helper using PDF.co API parameters.
  @mcp.tool() async def html_to_pdf( html: str = Field( description="Input HTML code to be converted. To convert the link to a PDF use the /pdf/convert/from/url endpoint instead. If it is a local file, just pass the file content as a string." ), margins: str = Field( description="Set to CSS style margins like 10px, 5mm, 5in for all sides or 5px 5px 5px 5px (the order of margins is top, right, bottom, left). (Optional)", default="", ), paperSize: str = Field( description="A4 is set by default. Can be Letter, Legal, Tabloid, Ledger, A0, A1, A2, A3, A4, A5, A6 or a custom size. Custom size can be set in px (pixels), mm or in (inches) with width and height separated by space like this: 200 300, 200px 300px, 200mm 300mm, 20cm 30cm or 6in 8in. (Optional)", default="", ), orientation: str = Field( description="Set to Portrait or Landscape. Portrait is set by default. (Optional)", default="", ), printBackground: bool = Field( description="true by default. Set to false to disable printing of background. (Optional)", default=True, ), mediaType: str = Field( description="Uses print by default. Set to screen to convert HTML as it appears in a browser or print to convert as it appears for printing or none to set none as mediaType for CSS styles. (Optional)", default="", ), DoNotWaitFullLoad: bool = Field( description="false by default. Set to true to skip waiting for full load (like full video load etc. that may affect the total conversion time). (Optional)", default=False, ), header: str = Field( description="User definable HTML for the header to be applied on every page header. (Optional)", default="", ), footer: str = Field( description="User definable HTML for the footer to be applied on every page footer. (Optional)", default="", ), httpusername: str = Field( description="HTTP auth user name if required to access source url. (Optional)", default="", ), httppassword: str = Field( description="HTTP auth password if required to access source url. (Optional)", default="", ), name: str = Field( description="File name for the generated output. (Optional)", default="" ), api_key: str = Field( description="PDF.co API key. If not provided, will use X_API_KEY environment variable. (Optional)", default="", ), ) -> BaseResponse: """ Convert HTML to PDF. Ref: https://developer.pdf.co/api-reference/pdf-from-html/convert.md The header and footer parameters can contain valid HTML markup with the following classes used to inject printing values into them: - date: formatted print date - title: document title - url: document location - pageNumber: current page number - totalPages: total pages in the document - img: tag is supported in both the header and footer parameter, provided that the src attribute is specified as a base64-encoded string. For example, the following markup will generate Page N of NN page numbering: ```html <span style='font-size:10px'>Page <span class='pageNumber'></span> of <span class='totalPages'></span>.</span> """ return await convert_from( "pdf", "html", ConversionParams( html=html, margins=margins, paperSize=paperSize, orientation=orientation, printBackground=printBackground, mediaType=mediaType, DoNotWaitFullLoad=DoNotWaitFullLoad, header=header, footer=footer, httpusername=httpusername, httppassword=httppassword, name=name, api_key=api_key, ), )
• pdfco/mcp/models.py:13-160 (schema)

  Pydantic BaseModel defining the shared input parameters (ConversionParams) for various PDF conversion tools, including those specific to HTML to PDF like 'html', 'margins', 'paperSize', etc. Includes parse_payload method to build API payload.
  class ConversionParams(BaseModel): url: str = Field( description="URL to the source file. Supports publicly accessible links including Google Drive, Dropbox, PDF.co Built-In Files Storage. Use 'upload_file' tool to upload local files.", default="", ) httpusername: str = Field( description="HTTP auth user name if required to access source url. (Optional)", default="", ) httppassword: str = Field( description="HTTP auth password if required to access source url. (Optional)", default="", ) pages: str = Field( description="Comma-separated page indices (e.g., '0, 1, 2-' or '1, 3-7'). Use '!' for inverted page numbers (e.g., '!0' for last page). Processes all pages if None. (Optional)", default="", ) unwrap: bool = Field( description="Unwrap lines into a single line within table cells when lineGrouping is enabled. Must be true or false. (Optional)", default=False, ) rect: str = Field( description="Defines coordinates for extraction (e.g., '51.8,114.8,235.5,204.0'). (Optional)", default="", ) lang: str = Field( description="Language for OCR for scanned documents. Default is 'eng'. See PDF.co docs for supported languages. (Optional, Default: 'eng')", default="eng", ) line_grouping: str = Field( description="Enables line grouping within table cells when set to '1'. (Optional)", default="0", ) password: str = Field( description="Password of the PDF file. (Optional)", default="" ) name: str = Field( description="File name for the generated output. (Optional)", default="" ) autosize: bool = Field( description="Controls automatic page sizing. If true, page dimensions adjust to content. If false, uses worksheet’s page setup. (Optional)", default=False, ) html: str = Field( description="Input HTML code to be converted. To convert the link to a PDF use the /pdf/convert/from/url endpoint instead.", default="", ) templateId: str = Field( description="Set to the ID of your HTML template. You can find and copy the ID from HTML to PDF Templates.", default="", ) templateData: str = Field( description="Set it to a string with input JSON data (recommended) or CSV data.", default="", ) margins: str = Field( description="Set to CSS style margins like 10px, 5mm, 5in for all sides or 5px 5px 5px 5px (the order of margins is top, right, bottom, left). (Optional)", default="", ) paperSize: str = Field( description="A4 is set by default. Can be Letter, Legal, Tabloid, Ledger, A0, A1, A2, A3, A4, A5, A6 or a custom size. Custom size can be set in px (pixels), mm or in (inches) with width and height separated by space like this: 200 300, 200px 300px, 200mm 300mm, 20cm 30cm or 6in 8in. (Optional)", default="", ) orientation: str = Field( description="Set to Portrait or Landscape. Portrait is set by default. (Optional)", default="", ) printBackground: bool = Field( description="true by default. Set to false to disable printing of background. (Optional)", default=True, ) mediaType: str = Field( description="Uses print by default. Set to screen to convert HTML as it appears in a browser or print to convert as it appears for printing or none to set none as mediaType for CSS styles. (Optional)", default="", ) DoNotWaitFullLoad: bool = Field( description="false by default. Set to true to skip waiting for full load (like full video load etc. that may affect the total conversion time). (Optional)", default=False, ) header: str = Field( description="User definable HTML for the header to be applied on every page header. (Optional)", default="", ) footer: str = Field( description="User definable HTML for the footer to be applied on every page footer. (Optional)", default="", ) worksheetIndex: str = Field( description="Index of the worksheet to convert. (Optional)", default="" ) def parse_payload(self, async_mode: bool = True): payload = { "async": async_mode, } if self.url: payload["url"] = self.url if self.httpusername: payload["httpusername"] = self.httpusername if self.httppassword: payload["httppassword"] = self.httppassword if self.pages: payload["pages"] = self.pages if self.unwrap: payload["unwrap"] = self.unwrap if self.rect: payload["rect"] = self.rect if self.lang: payload["lang"] = self.lang if self.line_grouping: payload["lineGrouping"] = self.line_grouping if self.password: payload["password"] = self.password if self.name: payload["name"] = self.name if self.autosize: payload["autosize"] = self.autosize if self.html: payload["html"] = self.html if self.templateId: payload["templateId"] = self.templateId if self.templateData: payload["templateData"] = self.templateData if self.margins: payload["margins"] = self.margins if self.paperSize: payload["paperSize"] = self.paperSize if self.orientation: payload["orientation"] = self.orientation if self.printBackground: payload["printBackground"] = self.printBackground if self.mediaType: payload["mediaType"] = self.mediaType if self.DoNotWaitFullLoad: payload["DoNotWaitFullLoad"] = self.DoNotWaitFullLoad if self.header: payload["header"] = self.header if self.footer: payload["footer"] = self.footer if self.worksheetIndex: payload["worksheetIndex"] = self.worksheetIndex return payload
• pdfco/mcp/services/pdf.py:12-15 (helper)

  Helper function convert_from invoked by the html_to_pdf handler to construct the PDF.co API endpoint '/pdf/convert/from/html' and call the underlying request function.
  async def convert_from( _to: str, _from: str, params: ConversionParams, api_key: str | None = None ) -> BaseResponse: return await request(f"{_to}/convert/from/{_from}", params, api_key=api_key)
• pdfco/mcp/services/pdf.py:125-154 (helper)

  Core request helper that performs the HTTP POST to PDF.co API using PDFCoClient, parses response into BaseResponse, and handles errors. Called by convert_from.
  async def request( endpoint: str, params: ConversionParams, custom_payload: dict | None = None, api_key: str | None = None, ) -> BaseResponse: payload = params.parse_payload(async_mode=True) if custom_payload: payload.update(custom_payload) try: async with PDFCoClient(api_key=api_key) as client: url = f"/v1/{endpoint}" print(f"Requesting {url} with payload {payload}", file=sys.stderr) response = await client.post(url, json=payload) print(f"response: {response}", file=sys.stderr) json_data = response.json() return BaseResponse( status="working", content=json_data, credits_used=json_data.get("credits"), credits_remaining=json_data.get("remainingCredits"), tips=f"You **should** use the 'wait_job_completion' tool to wait for the job [{json_data.get('jobId')}] to complete if a jobId is present.", ) except Exception as e: return BaseResponse( status="error", content=f"{type(e)}: {[arg for arg in e.args if arg]}", )