MCP Server · Plenitudo.ai

Fill PDF forms from any AI agent

Tax documents, HR paperwork, legal contracts — FormFill MCP turns structured data into completed PDFs in a single tool call.

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Example tool call
// Agent fills a W-9 in one call
{
  "tool": "fill_form",
  "parameters": {
    "pdf_path": "/forms/w9_blank.pdf",
    "field_values": {
      "f1_01": "Alice Johnson",
      "f1_02": "Alice's Consulting LLC",
      "f1_07": "12-3456789"
    },
    "output_path": "/forms/w9_filled.pdf",
    "api_key": "ff_free_..."
  }
}

// Response
{ "ok": true, "fields_filled": 3, "pages": 1 }

Built for agent workflows

Wherever an agent needs to output a completed form, FormFill handles the last mile.

🧾

Tax Preparation

Agents collect W-2 data through conversation, then auto-populate IRS 1040, W-9, and state forms — ready to sign.

🏢

HR Onboarding

Walk new hires through onboarding in chat, then fill I-9s, direct deposit forms, and benefits paperwork automatically.

⚖️

Legal Documents

Populate NDA templates, court filing forms, and contract paperwork from structured intake — hours of work in seconds.

🏠

Real Estate

Listing agreements, disclosure forms, rental applications — any AcroForm PDF in the workflow.


Simple pricing

No credit card required to get started.

Free
$0 / month
For evaluation and low-volume workflows.
  • 50 form fills / month
  • All three MCP tools
  • Multi-page PDF support
  • Instant API key
Get Free Key

Get your API key

Free tier — no credit card required, instant access.

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MCP Endpoint

https://formfill-mcp.plain-cherry-e1fe.workers.dev/mcp