JustFill PDF Form Automation

Install

Works with Claude Code, VS Code, Codex, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/mrmaciej1-justfill-pdf-forms

About

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Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Nov 1, 2026.

Tools

3 read · 7 write · 3 delete · 1 not yet classified

Secrets

1 (API keys, tokens or passwords)

Install scripts

None found

Runs as

Python package

Tools (14)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• add_field

  Add a field the detector missed (a false negative). Coordinates are percentages of the page (0-100), top-left origin — read them off the render_preview image proportionally. align ('left'|'center'|'right') and vertical_align ('top'|'middle'|'bottom') control where the value sits inside the box when the PDF is filled.

• close_workspace

  Release the current PDF and field data when work is finished. Saved templates and output PDFs are not deleted. This operation is idempotent, which makes it safe to call from automation cleanup blocks.

• fill_pdf

  Fill the PDF and save it. `values` maps field id -> text value (checkboxes: "true"/"yes"/"x" to tick). Fields not present in `values` stay empty. AcroForm fields are filled natively inside the PDF; everything else is drawn at its exact box. The response's `warnings` list flags values that will be shrunk or truncated to fit their box — fix those before delivering the document.

• list_fields

  List the current working fields (optionally one page only).

• list_templates

  List saved templates on this account (name + field count + hash).

• open_pdf

  Open a PDF (or a scanned image: jpg/png/tiff) and detect its fillable fields. Images are converted to a single-page PDF automatically (deterministically, so a template saved for a photo matches the same photo next time). Resolution order (best source wins): 1. Saved template matching this exact file (deterministic, confidence 1.0) 2. Embedded AcroForm fields (deterministic, confidence 1.0) 3. ML detection (each field carries a confidence score) force_detect=True skips steps 1-2 and re-runs ML detection from scratch — use it to rebuild a layout when the saved template is wrong or stale…

• prune_fields

  Bulk-delete fields matching ALL given criteria (e.g. detection noise). field_type: exact type match (e.g. 'cell'); confidence_below / width_below / height_below: strictly-less-than thresholds (w/h in % of page); page_index: limit to one page; exclude_ids: always keep these. Returns the removed ids so the operation is auditable (and reversible via add_field if it cut too much).

• remove_field

  Delete a field that isn't a real input (a false positive).

• remove_fields

  Delete many fields in one call (batch version of remove_field).

• render_filled_preview

  Preview how the filled page will look BEFORE generating the PDF. Draws `values` (field id -> text; checkboxes get an X) into their boxes on the rendered page. Costs nothing — no fill is consumed. Typography is an approximation of the final output (the server typesets the real PDF), so use it to verify placement, alignment and obvious overflow, then fill_pdf.

• render_preview

  Render a page with the working field boxes drawn on it. Look at this image to VERIFY placement: blue boxes are deterministic (template/AcroForm/agent-placed); green/orange/red are ML detections by confidence (>=0.7 / >=0.4 / <0.4). Each box is labeled with its field id.

• save_template

  Save the current (reviewed) field layout as a reusable template. Next time this exact PDF is opened — by you or another agent session on this account — open_pdf returns these fields with confidence 1.0 and no ML pass at all. This is what makes repeat filling deterministic. Before saving, give every field a short semantic name (update_fields with name=..., e.g. 'age_score', 'total_abcd2') — names are stored in the template, so the next session maps values by meaning instead of guessing from coordinates. Also remove false positives first (remove_fields).

• update_field

  Move/resize/rename a field, or set its text alignment. align: 'left'|'center'|'right'; vertical_align: 'top'|'middle'|'bottom' — where the value sits inside the box in the filled PDF.

• update_fields

  Update many fields in one call (batch version of update_field). Each item: {"field_id": "...", and any of x, y, w, h, name, field_type, align, vertical_align}. Items with an unknown field_id are reported back, the rest are still applied.

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Weekly downloads

45

Last commit

Oct 20, 2026 (11 days ago)

Last release

Aug 24, 2026 (2 months ago)

Last package publish

Aug 24, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Registry name

io.github.mrmaciej1/justfill-pdf-forms

Version

0.4.10

Auth

Auth not stated, API key

Packages

pypi justfill-mcp

License

MIT

Repository

github.com/mrmaciej1/justfill-mcp

Website

justfill.app/mcp?utm_source=mcp_registry&utm_medium=directory&utm_campaign=b2b_pdf_automation_2026q3&utm_content=server_listing

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql