Security-first, self-hosted MCP server for Firefly III — 152 operations behind 5 scoped tools, with stdio and authenticated HTTP.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add firefly-iii --env FIREFLY_API_URL='<FIREFLY_API_URL>' --env FIREFLY_API_TOKEN='<FIREFLY_API_TOKEN>' -- npx -y @yakupemreyerli/firefly-mcp~/.codex/config.toml
[mcp_servers.firefly-iii]
command = "npx"
args = ["-y", "@yakupemreyerli/firefly-mcp"]
env = { FIREFLY_API_URL = "<FIREFLY_API_URL>", FIREFLY_API_TOKEN = "<FIREFLY_API_TOKEN>" }
# codex mcp add firefly-iii --env FIREFLY_API_URL='<FIREFLY_API_URL>' --env FIREFLY_API_TOKEN='<FIREFLY_API_TOKEN>' -- npx -y @yakupemreyerli/firefly-mcp~/.cursor/mcp.json
{
"mcpServers": {
"firefly-iii": {
"command": "npx",
"args": [
"-y",
"@yakupemreyerli/firefly-mcp"
],
"env": {
"FIREFLY_API_URL": "<FIREFLY_API_URL>",
"FIREFLY_API_TOKEN": "<FIREFLY_API_TOKEN>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"firefly-iii": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@yakupemreyerli/firefly-mcp"
],
"env": {
"FIREFLY_API_URL": "<FIREFLY_API_URL>",
"FIREFLY_API_TOKEN": "<FIREFLY_API_TOKEN>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"firefly-iii": {
"command": "npx",
"args": [
"-y",
"@yakupemreyerli/firefly-mcp"
],
"env": {
"FIREFLY_API_URL": "<FIREFLY_API_URL>",
"FIREFLY_API_TOKEN": "<FIREFLY_API_TOKEN>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"firefly-iii": {
"command": "npx",
"args": [
"-y",
"@yakupemreyerli/firefly-mcp"
],
"env": {
"FIREFLY_API_URL": "<FIREFLY_API_URL>",
"FIREFLY_API_TOKEN": "<FIREFLY_API_TOKEN>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"firefly-iii": {
"command": "npx",
"args": [
"-y",
"@yakupemreyerli/firefly-mcp"
],
"env": {
"FIREFLY_API_URL": "<FIREFLY_API_URL>",
"FIREFLY_API_TOKEN": "<FIREFLY_API_TOKEN>"
}
}
}
}Environment variables
FIREFLY_API_URLFIREFLY_API_TOKEN
Replace the placeholders with your own credentials and keep them out of version control.