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justfill

justfill is a plugin for Gemini CLI from mrmaciej1/justfill-mcp. Its token cost is not measured, scanned A, original, MIT.

A tool that fills PDF forms using AI, including scanned forms, detected fields, visual review, templates, and native AcroForm fields. PDF is a document format, and AcroForm is PDF's built-in interactive form format.

In plain words
What is it for?
It is for detecting fields in PDF forms, filling them, reviewing the result, and reusing form templates.
Why use it?
It helps when forms are scans or have fields that are difficult to identify manually. Visual review provides a way to check the result before using the completed document.

Plugin for Gemini CLI

Written for Gemini CLI: a Gemini CLI extension manifest. Also seen: mentions Gemini CLI.

not rated 0repo 7d ago A scan tokens not measured original MIT

Good fit It is for detecting fields in PDF forms, filling them, reviewing the result, and reusing form templates.

Compare 6 plugins from other repositories ↓
Install with agentmods
npx agentmods add plugins/mrmaciej1/justfill-mcp/gemini-extension
View source ↗ mrmaciej1/justfill-mcp justfill.app
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/mrmaciej1/justfill-mcp

Made for: Gemini CLI.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for justfill

README.md
[![agentmods](https://agentmods.dev/badge/plugins/mrmaciej1/justfill-mcp/gemini-extension/github.svg)](https://agentmods.dev/plugins/mrmaciej1/justfill-mcp/gemini-extension)
Your own site
<a href="https://agentmods.dev/plugins/mrmaciej1/justfill-mcp/gemini-extension"><img src="https://agentmods.dev/badge/plugins/mrmaciej1/justfill-mcp/gemini-extension/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for justfill

Your own site · 80×15
<a href="https://agentmods.dev/plugins/mrmaciej1/justfill-mcp/gemini-extension"><img src="https://agentmods.dev/badge/plugins/mrmaciej1/justfill-mcp/gemini-extension.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

justfill scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

The scan reads gemini-extension.json. This mod also ships 1 executable file (examples/n8n/test-deterministic-mapping.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

gemini-extension.json · 13 lines

What it actually says

{
  "name": "justfill",
  "version": "0.4.10",
  "description": "Fill PDF forms with AI — field detection on scans, visual review, templates, native AcroForm fill via justfill.app",
  "mcpServers": {
    "justfill": {
      "command": "uvx",
      "args": ["justfill-mcp"]
    }
  },
  "contextFileName": "GEMINI.md"
}
Files

What ships with it

10 files beside gemini-extension.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 13 lines scan A 21bff3674bb1

Subscribe to this mod's changes

justfill is a plugin published in the GitHub repository mrmaciej1/justfill-mcp (0 stars, last pushed 7d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-07.

DocumentsPDFai-agentsformsgemini-cli-extensionmcpmcp-server
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