Skip to main content
Glama
pdfdotco

PDF.co MCP Server

Official
by pdfdotco

extract_attachments

Extract attached files from a PDF document. Specify the source PDF URL to retrieve all embedded attachments.

Instructions

Extracts attachments from a source PDF file.
Ref: https://developer.pdf.co/api-reference/pdf-extract-attachments.md

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlYesURL to the source PDF file.
httpusernameNoHTTP auth user name if required to access source url. (Optional)
httppasswordNoHTTP auth password if required to access source url. (Optional)
passwordNoPassword of PDF file. (Optional)
api_keyNoPDF.co API key. If not provided, will use X_API_KEY environment variable. (Optional)

Implementation Reference

  • The `extract_attachments` async function that serves as the MCP tool handler. It accepts URL, HTTP auth credentials, PDF password, and API key parameters, builds a ConversionParams object, and delegates to `extract_pdf_attachments`.
    @mcp.tool()
    async def extract_attachments(
        url: str = Field(description="URL to the source PDF file."),
        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="",
        ),
        password: str = Field(description="Password of PDF file. (Optional)", default=""),
        api_key: str = Field(
            description="PDF.co API key. If not provided, will use X_API_KEY environment variable. (Optional)",
            default="",
        ),
    ) -> BaseResponse:
        """
        Extracts attachments from a source PDF file.
        Ref: https://developer.pdf.co/api-reference/pdf-extract-attachments.md
        """
        params = ConversionParams(
            url=url,
            httpusername=httpusername if httpusername else None,
            httppassword=httppassword if httppassword else None,
            password=password if password else None,
        )
        return await extract_pdf_attachments(params, api_key=api_key)
  • The `extract_pdf_attachments` helper function that calls the PDF.co API endpoint 'pdf/attachments/extract' using the shared HTTP client. This is the actual API call implementation.
    async def extract_pdf_attachments(
        params: ConversionParams, api_key: str | None = None
    ) -> BaseResponse:
        return await request("pdf/attachments/extract", params, api_key=api_key)
  • The FastMCP server instance (`mcp = FastMCP("pdfco")`) used to register the tool via the `@mcp.tool()` decorator in extraction.py.
    from fastmcp import FastMCP
    
    mcp = FastMCP("pdfco")
  • The `ConversionParams` Pydantic model used for input validation and serialization. It defines fields like `url`, `httpusername`, `httppassword`, `password`, and `parse_payload()` method.
    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
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden but only states the function. Missing details like side effects, error conditions, performance implications, or what happens if no attachments are found.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very concise (two sentences plus a link). While it could be slightly more structured, it wastes no words and front-loads the core purpose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Without an output schema, the description should clarify return values (e.g., list of attachments or content). It also lacks usage context and error handling, making it incomplete for a 5-parameter tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the schema already documents parameters. The description adds no additional meaning beyond the parameter descriptions, meeting the baseline but not exceeding it.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action (extracts) and the resource (attachments from a source PDF file). It distinguishes itself from sibling tools, most of which convert or manipulate PDFs, not specifically extract attachments.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool vs alternatives like pdf_split or pdf_to_text. The description lacks any context about prerequisites, when to avoid, or which scenarios are appropriate.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/pdfdotco/pdfco-mcp'

If you have feedback or need assistance with the MCP directory API, please join our Discord server