io.github.cyanheads/ntfy-mcp-server

io.github.cyanheads/ntfy-mcp-serverv2.3.2Other

Send, manage, and replay ntfy push notifications via MCP.

The current version, v2.3.2, was published to the official MCP registry on 2026-08-22. It is distributed as ntfy-mcp-server on npm, filed under Other by this index, and declares 17 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; the index's current counts put this record in context.

In-path gate · all MCP tools

Using io.github.cyanheads/ntfy-mcp-server in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire

Auditable install path →Watch it hold a drift →

Trust verdict · v1 advisory · method

REVIEWstatus: PARTIALfresh until 2026-09-03 20:32 UTC

screened 2026-07-09tier: scannedgranularity: description-levelsource: registry

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

mcpindex.integrity.descriptionpassINFO

evidence“No malicious instructions found”via static_description

Limits of this verdict

- Semantic screen only - the deterministic conformance probe has not run on this server
- Confidence is reported but not yet calibrated (v1)
- Screen reads the tool description, not the live behavior
- advisory
- registry description only no input schema
- screen model 8b
- Still current: the description we screened is unchanged, re-checked against the registry
- The registry listing (version, packages, links) changed after this screen ran - the description we assessed did not

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-08-27).

Contracts can change after screening, with no version bump. The gate pins io.github.cyanheads/ntfy-mcp-server’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Cite this record

People vet a server before wiring it in. One line on your project site or docs answers that with an independent record: screening verdict, registry provenance, contract drift history. It stays current as new screens and drift events land.

Markdown

[Independent trust record for io.github.cyanheads/ntfy-mcp-server](https://mcpindex.ai/server/io-github-cyanheads-ntfy-mcp-server) - screening verdict, registry provenance, and contract drift monitoring.

HTML

<a href="https://mcpindex.ai/server/io-github-cyanheads-ntfy-mcp-server">Independent trust record for io.github.cyanheads/ntfy-mcp-server</a> - screening verdict, registry provenance, and contract drift monitoring.

Embed this badge

A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.

Markdown

[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-cyanheads-ntfy-mcp-server)](https://mcpindex.ai/server/io-github-cyanheads-ntfy-mcp-server)

HTML

<a href="https://mcpindex.ai/server/io-github-cyanheads-ntfy-mcp-server"><img src="https://mcpindex.ai/api/v1/badge/io-github-cyanheads-ntfy-mcp-server" alt="mcpindex verdict" height="20" /></a>

Environment variables

NTFY_SERVERS

JSON array of `{ baseUrl, authToken? | authUsername?+authPassword? }` entries — one per ntfy server. First entry is the default base. Auth is scoped to the entry's `baseUrl`; per-call `base_url` overrides that match a registered base forward that server's auth. Takes precedence over the single-server NTFY_BASE_URL / NTFY_AUTH_* shorthand.

NTFY_BASE_URL

Single-server shorthand — base URL of the ntfy server (no trailing slash). Used when NTFY_SERVERS is unset.

NTFY_DEFAULT_TOPIC

Topic used when a tool call omits `topic`. Treat the topic name as a secret — anyone who knows it can publish or subscribe.

NTFY_AUTH_TOKEN

Bearer access token (`tk_…`) for the single-server shorthand. Mutually exclusive with NTFY_AUTH_USERNAME / NTFY_AUTH_PASSWORD.

NTFY_AUTH_USERNAME

Basic-auth username for the single-server shorthand — must be set together with NTFY_AUTH_PASSWORD.

NTFY_AUTH_PASSWORD

Basic-auth password for the single-server shorthand — must be set together with NTFY_AUTH_USERNAME.

NTFY_REQUEST_TIMEOUT_MS

Per-request HTTP timeout in milliseconds.

NTFY_MAX_RETRIES

Max retry attempts for transient upstream failures (5xx, network, 429).

NTFY_BLOCK_PRIVATE_HOSTS

When true, a per-call `base_url` override must resolve to a public address and its redirects are not followed. Servers registered under NTFY_SERVERS / NTFY_BASE_URL are exempt. Turn it on where callers you do not control can reach the server.

MCP_LOG_LEVEL

Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').

LOGS_DIR

Directory for file-based logs (Node only; ignored on Workers).

OTEL_ENABLED

Enable OpenTelemetry instrumentation (spans, metrics, completion logs).

NTFY_SERVERS

NTFY_BASE_URL

Single-server shorthand — base URL of the ntfy server (no trailing slash). Used when NTFY_SERVERS is unset.

NTFY_DEFAULT_TOPIC

Topic used when a tool call omits `topic`. Treat the topic name as a secret — anyone who knows it can publish or subscribe.

NTFY_AUTH_TOKEN

Bearer access token (`tk_…`) for the single-server shorthand. Mutually exclusive with NTFY_AUTH_USERNAME / NTFY_AUTH_PASSWORD.

NTFY_AUTH_USERNAME

Basic-auth username for the single-server shorthand — must be set together with NTFY_AUTH_PASSWORD.

NTFY_AUTH_PASSWORD

Basic-auth password for the single-server shorthand — must be set together with NTFY_AUTH_USERNAME.

NTFY_REQUEST_TIMEOUT_MS

Per-request HTTP timeout in milliseconds.

NTFY_MAX_RETRIES

Max retry attempts for transient upstream failures (5xx, network, 429).

NTFY_BLOCK_PRIVATE_HOSTS

MCP_SESSION_MODE

HTTP session model: 'auto', 'stateful', or 'stateless'. 'auto' resolves to 'stateful'. Keep it stateful — the consent prompt on destructive and outbound calls is a multi-round-trip request that a 2025-era HTTP client can only complete over a live session.

MCP_HTTP_HOST

The hostname for the HTTP server.

MCP_HTTP_PORT

The port to run the HTTP server on.

MCP_HTTP_ENDPOINT_PATH

The endpoint path for the MCP server.

MCP_AUTH_MODE

Authentication mode to use: 'none', 'jwt', or 'oauth'.

MCP_LOG_LEVEL

Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').

LOGS_DIR

Directory for file-based logs (Node only; ignored on Workers).

OTEL_ENABLED

Enable OpenTelemetry instrumentation (spans, metrics, completion logs).

MCP quality score · maturity, not trust · methodology

freshness

completeness

installability

documentation

stability

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Install this server

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "ntfy-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "ntfy-mcp-server"
      ],
      "env": {
        "NTFY_SERVERS": "<ntfy_servers>",
        "NTFY_BASE_URL": "https://ntfy.sh",
        "NTFY_DEFAULT_TOPIC": "<ntfy_default_topic>",
        "NTFY_AUTH_TOKEN": "<ntfy_auth_token>",
        "NTFY_AUTH_USERNAME": "<ntfy_auth_username>",
        "NTFY_AUTH_PASSWORD": "<ntfy_auth_password>",
        "NTFY_REQUEST_TIMEOUT_MS": "15000",
        "NTFY_MAX_RETRIES": "3",
        "NTFY_BLOCK_PRIVATE_HOSTS": "false",
        "MCP_LOG_LEVEL": "info",
        "LOGS_DIR": "./logs",
        "OTEL_ENABLED": "false",
        "MCP_SESSION_MODE": "auto",
        "MCP_HTTP_HOST": "127.0.0.1",
        "MCP_HTTP_PORT": "3010",
        "MCP_HTTP_ENDPOINT_PATH": "/mcp",
        "MCP_AUTH_MODE": "none"
      }
    }
  }
}

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "ntfy-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "ntfy-mcp-server"
      ],
      "env": {
        "NTFY_SERVERS": "<ntfy_servers>",
        "NTFY_BASE_URL": "https://ntfy.sh",
        "NTFY_DEFAULT_TOPIC": "<ntfy_default_topic>",
        "NTFY_AUTH_TOKEN": "<ntfy_auth_token>",
        "NTFY_AUTH_USERNAME": "<ntfy_auth_username>",
        "NTFY_AUTH_PASSWORD": "<ntfy_auth_password>",
        "NTFY_REQUEST_TIMEOUT_MS": "15000",
        "NTFY_MAX_RETRIES": "3",
        "NTFY_BLOCK_PRIVATE_HOSTS": "false",
        "MCP_LOG_LEVEL": "info",
        "LOGS_DIR": "./logs",
        "OTEL_ENABLED": "false",
        "MCP_SESSION_MODE": "auto",
        "MCP_HTTP_HOST": "127.0.0.1",
        "MCP_HTTP_PORT": "3010",
        "MCP_HTTP_ENDPOINT_PATH": "/mcp",
        "MCP_AUTH_MODE": "none"
      }
    }
  }
}

Cline (cline_mcp_settings.json)

npx -y -- ntfy-mcp-server

Claude Code (claude mcp add)

claude mcp add --scope user ntfy-mcp-server -- npx -y -- ntfy-mcp-server

Gemini CLI (gemini mcp add)

gemini mcp add -s user ntfy-mcp-server npx -y -- ntfy-mcp-server

Verdict API

curl -s mcpindex.ai/api/v1/trust/server/io-github-cyanheads-ntfy-mcp-server

Free-tier verdict as JSON: decision + dimensions + severity. Call it from your agent before it invokes a tool it just discovered.

Details

version: v2.3.2
category: Other
verdict expires: 2026-09-03
quality: 85 / 100
operator: cyanheads

Listing

Listed from the official MCP registry. Unclaimed by its maintainer. Maintainer? Email us →

Provenance

Each verdict is bound to a hash of the exact description it judged, so a re-crawl that changes the text produces a new record rather than silently inheriting this one. Verdict history is hash-chained and anchored to Bitcoin via OpenTimestamps (latest confirmed at block 964,248). Verify it yourself.

Links

Repository →