Fill existing PDF forms in ChatGPT or MCP/n8n workflows. Review fields once, reuse templates, and fill from JSON or Excel/CSV.
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add justfill-pdf-form-automation --env JUSTFILL_API_KEY='<JUSTFILL_API_KEY>' -- uvx justfill-mcp~/.codex/config.toml
[mcp_servers.justfill-pdf-form-automation]
command = "uvx"
args = ["justfill-mcp"]
env = { JUSTFILL_API_KEY = "<JUSTFILL_API_KEY>" }
# codex mcp add justfill-pdf-form-automation --env JUSTFILL_API_KEY='<JUSTFILL_API_KEY>' -- uvx justfill-mcp~/.cursor/mcp.json
{
"mcpServers": {
"justfill-pdf-form-automation": {
"command": "uvx",
"args": [
"justfill-mcp"
],
"env": {
"JUSTFILL_API_KEY": "<JUSTFILL_API_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"justfill-pdf-form-automation": {
"type": "stdio",
"command": "uvx",
"args": [
"justfill-mcp"
],
"env": {
"JUSTFILL_API_KEY": "<JUSTFILL_API_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"justfill-pdf-form-automation": {
"command": "uvx",
"args": [
"justfill-mcp"
],
"env": {
"JUSTFILL_API_KEY": "<JUSTFILL_API_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"justfill-pdf-form-automation": {
"command": "uvx",
"args": [
"justfill-mcp"
],
"env": {
"JUSTFILL_API_KEY": "<JUSTFILL_API_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"justfill-pdf-form-automation": {
"command": "uvx",
"args": [
"justfill-mcp"
],
"env": {
"JUSTFILL_API_KEY": "<JUSTFILL_API_KEY>"
}
}
}
}Remote
claude mcp add --transport http justfill-pdf-form-automation https://api.justfill.app/api/mcp~/.codex/config.toml
[mcp_servers.justfill-pdf-form-automation]
url = "https://api.justfill.app/api/mcp"
# codex mcp add justfill-pdf-form-automation --url https://api.justfill.app/api/mcp~/.cursor/mcp.json
{
"mcpServers": {
"justfill-pdf-form-automation": {
"url": "https://api.justfill.app/api/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"justfill-pdf-form-automation": {
"type": "http",
"url": "https://api.justfill.app/api/mcp"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"justfill-pdf-form-automation": {
"httpUrl": "https://api.justfill.app/api/mcp"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"justfill-pdf-form-automation": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://api.justfill.app/api/mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"justfill-pdf-form-automation": {
"url": "https://api.justfill.app/api/mcp"
}
}
}Environment variables
JUSTFILL_API_KEY
Replace the placeholders with your own credentials and keep them out of version control.