gotify-mcp 0.3.2

MCP server for Gotify push notifications

Gotify MCP

MCP server for self-hosted Gotify. Exposes a unified gotify action router and a gotify_help companion tool for sending notifications and managing Gotify messages, applications, clients, and account metadata.

Overview

Two MCP tools are exposed:

Tool	Purpose
gotify	Unified action router for all Gotify operations
gotify_help	Returns markdown documentation for all actions and parameters

The server supports HTTP (default) and stdio transports. HTTP transport requires bearer authentication via GOTIFY_MCP_TOKEN.

What this repository ships

• gotify_mcp/server.py: FastMCP server, action router, and BearerAuth middleware
• gotify_mcp/services/gotify.py: Async HTTP client for the Gotify REST API
• skills/gotify/SKILL.md: Client-facing skill documentation
• docs/gotify-api.json: Bundled upstream Gotify API reference
• .claude-plugin/plugin.json, .codex-plugin/plugin.json, gemini-extension.json: Client manifests
• docker-compose.yml, Dockerfile, entrypoint.sh: Container deployment
• scripts/: Smoke tests and contract checks

Tools

gotify

Single entry point for all Gotify operations. Select the operation with the action parameter.

gotify(action="send_message", app_token="AbCdEf", message="Build finished", priority=5)

gotify_help

Returns the full action reference as Markdown. Call this to discover available actions.

gotify_help()

Actions

send_message

Send a push notification. Requires an app_token — this is the per-application token, not the client token.

Parameter	Type	Required	Default	Description
app_token	string	yes	—	Application token from Gotify UI (Settings > Apps)
message	string	yes	—	Notification body. Supports Markdown when extras sets contentType.
title	string	no	—	Notification title
priority	integer	no	app default	Priority 0–10. See Priority Levels below.
extras	dict	no	—	Extended metadata. See Extras Structure below.

Response fields:

Field	Type	Description
id	integer	Assigned message ID
appid	integer	Application ID that sent the message
message	string	Message body
title	string	Message title
priority	integer	Effective priority
date	string	ISO 8601 timestamp
extras	dict	Extras as submitted

Example:

gotify(action="send_message",
       app_token="AbCdEf",
       title="Deployment done",
       message="## Summary\n- All steps complete\n- Ready for review",
       priority=7,
       extras={"client::display": {"contentType": "text/markdown"}})

list_messages

List messages with pagination and optional filtering.

Parameter	Type	Required	Default	Description
app_id	integer	no	—	Filter to messages from one application
offset	integer	no	0	Cursor offset (message ID) — items before this ID are skipped
limit	integer	no	50	Maximum number of messages to return
sort_by	string	no	"id"	Field to sort by. Valid values: id, date, priority
sort_order	string	no	"desc"	"asc" or "desc"
query	string	no	""	Case-insensitive substring filter applied to title and message body

Response fields:

Field	Type	Description
items	array	Array of message objects (same shape as send_message response)
total	integer	Total messages before pagination
limit	integer	Limit used
offset	integer	Offset used
has_more	boolean	Whether more pages exist

Note: Gotify uses cursor-style pagination internally. The offset parameter maps to the since query parameter (a message ID), not a row count.

Example:

gotify(action="list_messages", limit=20, sort_order="desc")
gotify(action="list_messages", app_id=3, query="error", limit=10)

delete_message

Delete a single message by ID. Destructive — requires confirm=True.

Parameter	Type	Required	Default	Description
message_id	integer	yes	—	ID of the message to delete
confirm	boolean	yes	False	Must be True to proceed

Example:

gotify(action="delete_message", message_id=42, confirm=True)

delete_all_messages

Delete all messages across all applications. Destructive — requires confirm=True.

Parameter	Type	Required	Default	Description
confirm	boolean	yes	False	Must be True to proceed

Example:

gotify(action="delete_all_messages", confirm=True)

list_applications

List all applications registered on the Gotify server.

Parameter	Type	Required	Default	Description
offset	integer	no	0	Number of items to skip
limit	integer	no	50	Maximum items to return
query	string	no	""	Case-insensitive substring filter on application name

Response fields:

Field	Type	Description
items	array	Array of application objects
total	integer	Total applications before pagination
limit	integer	Limit used
offset	integer	Offset used
has_more	boolean	Whether more pages exist

Each application object contains:

Field	Type	Description
id	integer	Application ID
token	string	Application token (use for send_message)
name	string	Application name
description	string	Application description
defaultPriority	integer	Default message priority
image	string	Path to application image
internal	boolean	Whether this is an internal application

Example:

gotify(action="list_applications")
gotify(action="list_applications", query="homelab")

create_application

Create a new Gotify application.

Parameter	Type	Required	Default	Description
name	string	yes	—	Application name
description	string	no	—	Application description
default_priority	integer	no	—	Default priority for messages from this app (0–10)

Returns the created application object.

Example:

gotify(action="create_application",
       name="homelab-alerts",
       description="Claude Code homelab notifications",
       default_priority=5)

update_application

Update an existing application. Provide at least one of name, description, or default_priority.

Parameter	Type	Required	Default	Description
app_id	integer	yes	—	ID of the application to update
name	string	no	—	New application name
description	string	no	—	New description
default_priority	integer	no	—	New default priority (0–10)

Returns the updated application object.

Example:

gotify(action="update_application", app_id=3, name="homelab-alerts-v2", default_priority=7)

delete_application

Delete an application and all its messages. Destructive — requires confirm=True.

Parameter	Type	Required	Default	Description
app_id	integer	yes	—	ID of the application to delete
confirm	boolean	yes	False	Must be True to proceed

Example:

gotify(action="delete_application", app_id=3, confirm=True)

list_clients

List all registered Gotify clients. Requires GOTIFY_CLIENT_TOKEN.

Parameter	Type	Required	Default	Description
offset	integer	no	0	Number of items to skip
limit	integer	no	50	Maximum items to return
query	string	no	""	Case-insensitive substring filter on client name

Response has the same pagination shape as list_applications. Each client object contains id, token, and name.

Example:

gotify(action="list_clients")

create_client

Create a new Gotify client. Returns the client object including its token.

Parameter	Type	Required	Default	Description
name	string	yes	—	Client name

Example:

gotify(action="create_client", name="my-phone")

delete_client

Delete a Gotify client. Destructive — requires confirm=True.

Parameter	Type	Required	Default	Description
client_id	integer	yes	—	ID of the client to delete
confirm	boolean	yes	False	Must be True to proceed

Example:

gotify(action="delete_client", client_id=5, confirm=True)

health

Check the Gotify server health status. No additional parameters.

Returns a JSON object with health fields from the upstream Gotify /health endpoint. Note: this MCP tool call requires bearer authentication. The raw HTTP /health endpoint on the MCP server is unauthenticated.

Example:

gotify(action="health")

version

Get the Gotify server version. No additional parameters. No authentication required on the upstream call.

Example:

gotify(action="version")

current_user

Get the current authenticated user's account information. Requires GOTIFY_CLIENT_TOKEN.

No additional parameters. Returns the user object with id, name, and admin fields.

Example:

gotify(action="current_user")

Token Types

Gotify uses two separate token types. Using the wrong type will produce a 401 error.

Token	Source	Used for
App token	Gotify UI: Settings > Apps > Create Application	send_message only — passed per call as app_token
Client token	Gotify UI: Settings > Clients > Create Client	All management actions: list/delete messages, list/create/delete apps and clients, current_user

The MCP server reads GOTIFY_CLIENT_TOKEN from the environment and uses it automatically for management actions. You never pass it explicitly to the tool.

The app_token for send_message is always passed explicitly per call — it is not read from the server environment.

Priority Levels

The priority field is an integer from 0 to 10. Gotify clients interpret priority ranges as follows:

Range	Level	Recommended use
0–3	Low	Informational, FYI messages
4–7	Normal	Task updates, completions, standard alerts
8–10	High	Blocked states, errors, urgent alerts

If priority is omitted from send_message, the application's defaultPriority is used. If the application has no default, Gotify falls back to 0.

Extras Structure

The extras field in send_message is a free-form dict passed to the Gotify API. The most common use is enabling Markdown rendering:

extras={"client::display": {"contentType": "text/markdown"}}

Other known namespaces from the upstream Gotify extras specification:

Key	Value type	Description
client::display	dict	Display hints for Gotify clients
client::display.contentType	string	"text/plain" (default) or "text/markdown"
client::notification	dict	Platform-specific notification overrides

Any key/value pairs are accepted — the server passes them through as-is.

Destructive Operations

Four actions are gated behind a confirmation check:

• delete_message
• delete_all_messages
• delete_application
• delete_client

Without confirm=True, the server returns:

{"error": "Destructive operation. Pass confirm=True to proceed."}

To bypass the gate server-wide, set either environment variable:

ALLOW_DESTRUCTIVE=true   # skip confirm check
ALLOW_YOLO=true          # identical effect

These env vars are intended for automated environments where interactive confirmation is not possible.

Pagination

List actions (list_messages, list_applications, list_clients) share a common pagination interface:

Parameter	Type	Default	Notes
offset	integer	0	Items to skip. For list_messages, maps to the since cursor (a message ID). For list_applications and list_clients, applied client-side as a row offset.
limit	integer	50	Maximum items per page
sort_by	string	"id"	list_messages only. Field to sort by: id, date, priority. Not applied for apps or clients.
sort_order	string	"desc"	list_messages only. "asc" or "desc".
query	string	""	Substring filter. Matches title and body for messages; name for apps and clients. Case-insensitive.

All list responses include total, limit, offset, and has_more alongside the items array.

Error Handling

All errors return a JSON object with these fields:

Field	Type	Description
error	string	Short error identifier
errorCode	integer	HTTP status code or 500 for network errors
errorDescription	string	Human-readable explanation

Common errors:

error	errorCode	Cause
Unauthorized	401	Wrong or missing token type for the operation
HTTP 403	403	Token valid but operation not permitted for this user
HTTP 404	404	Message, application, or client ID does not exist
NoUpdateFields	400	update_application called with no fields to update
RequestError	500	Network failure reaching the Gotify server
No token provided	401	Neither app_token nor GOTIFY_CLIENT_TOKEN is set

Responses are truncated at 512 KB. Truncated responses include ... [truncated] at the end.

Installation

Marketplace

/plugin marketplace add jmagar/claude-homelab
/plugin install gotify-mcp @jmagar-claude-homelab

Local development

uv sync --dev
uv run gotify-mcp-server

Direct module invocation:

uv run python -m gotify_mcp.server

Docker

just up

Or manually:

docker compose up -d

Configuration

Copy .env.example to .env and fill in the required values:

cp .env.example .env

Environment variables

Variable	Required	Default	Description
GOTIFY_URL	yes	—	Base URL of your Gotify server (no trailing slash). Server exits at startup if unset.
GOTIFY_CLIENT_TOKEN	yes*	—	Client token for management operations. Without this, all management actions fail.
GOTIFY_APP_TOKEN	no	—	App token used in HTTP fallback examples. The MCP tool requires app_token per call.
GOTIFY_MCP_HOST	no	0.0.0.0	Interface for the MCP HTTP server to bind to
GOTIFY_MCP_PORT	no	9158	Port for the MCP HTTP server
GOTIFY_MCP_TRANSPORT	no	http	Transport mode: http or stdio
GOTIFY_MCP_TOKEN	yes**	—	Bearer token for MCP server authentication. Generate with openssl rand -hex 32. Required when transport is http and GOTIFY_MCP_NO_AUTH is not set.
GOTIFY_MCP_NO_AUTH	no	false	Set true to disable bearer auth. Appropriate only behind a trusted reverse proxy.
GOTIFY_LOG_LEVEL	no	INFO	Log level: DEBUG, INFO, WARNING, ERROR, CRITICAL
ALLOW_DESTRUCTIVE	no	false	Set true to skip confirm=True requirement for destructive actions
ALLOW_YOLO	no	false	Identical to ALLOW_DESTRUCTIVE
PUID	no	1000	User ID for container process
PGID	no	1000	Group ID for container process

*GOTIFY_CLIENT_TOKEN is required for management actions. Without it, a warning is logged at startup and management actions return 401.

**GOTIFY_MCP_TOKEN is required when GOTIFY_MCP_TRANSPORT=http and GOTIFY_MCP_NO_AUTH=false. The server exits at startup if neither is set.

Docker URL rewriting

When running inside Docker, localhost and 127.0.0.1 in GOTIFY_URL are automatically rewritten to host.docker.internal so the container can reach a host-side Gotify server.

Usage examples

Send a plain text notification

gotify(action="send_message",
       app_token="AbCdEf",
       title="Build finished",
       message="All tests passed.",
       priority=5)

Send a Markdown notification

gotify(action="send_message",
       app_token="AbCdEf",
       title="Deploy complete",
       message="## Status\n- All steps done\n- Ready for review",
       priority=7,
       extras={"client::display": {"contentType": "text/markdown"}})

Page through messages

# First page
gotify(action="list_messages", limit=25, offset=0)

# Next page (use the ID of the last message as offset)
gotify(action="list_messages", limit=25, offset=99)

Filter messages by text

gotify(action="list_messages", query="error", limit=20)

Filter messages from one application

gotify(action="list_messages", app_id=3, limit=50)

Manage applications

# List all applications
gotify(action="list_applications")

# Create
gotify(action="create_application",
       name="homelab-alerts",
       description="Automated notifications",
       default_priority=5)

# Update
gotify(action="update_application", app_id=3, default_priority=7)

# Delete (destructive)
gotify(action="delete_application", app_id=3, confirm=True)

Manage clients

# List all clients
gotify(action="list_clients")

# Create
gotify(action="create_client", name="my-phone")

# Delete (destructive)
gotify(action="delete_client", client_id=5, confirm=True)

Server info

gotify(action="health")
gotify(action="version")
gotify(action="current_user")

HTTP fallback

When MCP tools are unavailable, use direct HTTP calls. App tokens go to /message, client tokens go to management endpoints.

# Send a notification
curl -s -X POST "$GOTIFY_URL/message" \
  -H "X-Gotify-Key: $GOTIFY_APP_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"title":"Done","message":"All steps complete","priority":7}'

# List messages
curl -s "$GOTIFY_URL/message" \
  -H "X-Gotify-Key: $GOTIFY_CLIENT_TOKEN"

# List applications
curl -s "$GOTIFY_URL/application" \
  -H "X-Gotify-Key: $GOTIFY_CLIENT_TOKEN"

# Health (no auth)
curl -s "$GOTIFY_URL/health"

Development

Setup

just setup

This copies .env.example to .env (if not already present) and installs all dependencies.

Commands

just dev          # Run the server locally (uv run python -m gotify_mcp.server)
just lint         # Run ruff check
just fmt          # Run ruff format
just typecheck    # Run ty check
just test         # Run pytest
just build        # Build Docker image
just up           # Start via docker compose
just down         # Stop docker compose
just restart      # Restart docker compose
just logs         # Follow docker compose logs
just health       # curl http://localhost:9158/health
just test-live    # Run live integration tests (requires running server)
just gen-token    # Generate a random bearer token
just clean        # Remove build artifacts

Verification

Run before committing:

just lint
just typecheck
just test

Live verification (requires a running server and Gotify instance):

just test-live

Server health endpoint

The MCP server exposes an unauthenticated HTTP health endpoint:

GET http://localhost:9158/health

This proxies through to the Gotify server's /health and returns:

{"status": "ok", "gotify": {...}}

Or on failure:

{"status": "error", "reason": "..."}

Logs

The server writes rotating logs to logs/gotify_mcp.log (max 5 MB, 3 backups). Log level is controlled by GOTIFY_LOG_LEVEL.

Related plugins

Plugin	Category	Description
homelab-core	core	Core agents, commands, skills, and setup/health workflows for homelab management.
overseerr-mcp	media	Search movies and TV shows, submit requests, and monitor failed requests via Overseerr.
unraid-mcp	infrastructure	Query, monitor, and manage Unraid servers: Docker, VMs, array, parity, and live telemetry.
unifi-mcp	infrastructure	Monitor and manage UniFi devices, clients, firewall rules, and network health.
swag-mcp	infrastructure	Create, edit, and manage SWAG nginx reverse proxy configurations.
synapse-mcp	infrastructure	Docker management (Flux) and SSH remote operations (Scout) across homelab hosts.
arcane-mcp	infrastructure	Manage Docker environments, containers, images, volumes, networks, and GitOps via Arcane.
syslog-mcp	infrastructure	Receive, index, and search syslog streams from all homelab hosts via SQLite FTS5.
plugin-lab	dev-tools	Scaffold, review, align, and deploy homelab MCP plugins with agents and canonical templates.
axon	research	Self-hosted web crawl, ingest, embed, and RAG pipeline with MCP tooling.

License

MIT