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Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Code & DevOps

Tailscale MCP by usefulapi

By usefulapi.io Verified namespace

Read devices, users, keys, ACLs and DNS for a tailnet; manage devices, routes and auth keys.

WebsiteSource codeCloud & infrastructure
Connect to Tailscale MCP by usefulapi
Checks passed
14 / 22

0 failed · 8 not measured

Median response
153 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
22

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
400
Publisher identityCan the publisher be traced to its source?
402

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 153 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name tailscale-mcp.

  • Pass
    Lists tools

    tools/list returned 22 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 153 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 153 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Pass
    Parameters documented

    28 of 28 parameters have a description (100%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Pass
    Source repo linked

    A repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-11-10T23:33:36.606051Z, within 180 days.

  • Not measured
    Open-source licence

    The GitHub licence lookup has not returned an OSI result yet.

Start using Tailscale MCP by usefulapi

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http tailscale-mcp-by-usefulapi https://tailscale.usefulapi.io/mcp

Capabilities

Tools 22

tailscale_authorize_device

Authorize or de-authorize a device (only relevant when device approval is enabled for the tailnet). Tailscale REST: POST /device/{deviceId}/authorized.

Discovered
tailscale_create_auth_key

Create a new auth key for the tailnet (used to register new devices). Tailscale REST: POST /tailnet/{tailnet}/keys.

Discovered
tailscale_delete_device

Delete a device, removing it from the tailnet. Tailscale REST: DELETE /device/{deviceId}.

Discovered
tailscale_delete_key

Delete (revoke) an auth key or API access token by id — a security response. Tailscale REST: DELETE /tailnet/{tailnet}/keys/{keyId}.

Discovered
tailscale_expire_device_key

Expire a device's node key, forcing it to re-authenticate — a security response to a compromised or lost device. Tailscale REST: POST /device/{deviceId}/expire.

Discovered
tailscale_get_device

Get a single device by id. Tailscale REST: GET /device/{deviceId}.

Discovered
tailscale_get_dns_preferences

Get the tailnet's DNS preferences (e.g. whether MagicDNS is enabled). Tailscale REST: GET /tailnet/{tailnet}/dns/preferences.

Discovered
tailscale_get_key

Get details of a single auth key / API access token by id (capabilities, expiry, usage). Tailscale REST: GET /tailnet/{tailnet}/keys/{keyId}.

Discovered
tailscale_get_policy_file

Get the tailnet's ACL / policy file (returned as JSON via the Accept header, not HuJSON). Tailscale REST: GET /tailnet/{tailnet}/acl.

Discovered
tailscale_get_split_dns

Get the tailnet's split-DNS configuration — a map of domain → nameservers. Tailscale REST: GET /tailnet/{tailnet}/dns/split-dns.

Discovered
tailscale_get_tailnet_settings

Get the tailnet's settings (device approval, key expiry, posture, etc.). Tailscale REST: GET /tailnet/{tailnet}/settings.

Discovered
tailscale_get_user

Get a single user by id. Tailscale REST: GET /users/{userId}.

Discovered
tailscale_list_device_routes

List the subnet routes a device advertises and which are enabled. Tailscale REST: GET /device/{deviceId}/routes.

Discovered
tailscale_list_devices

List all devices in the tailnet (name, addresses, OS, last seen, tags, etc.). Tailscale REST: GET /tailnet/{tailnet}/devices.

Discovered
tailscale_list_dns_nameservers

List the global DNS nameservers configured for the tailnet. Tailscale REST: GET /tailnet/{tailnet}/dns/nameservers.

Discovered
tailscale_list_dns_searchpaths

List the DNS search paths (search domains) configured for the tailnet. Tailscale REST: GET /tailnet/{tailnet}/dns/searchpaths.

Discovered
tailscale_list_keys

List auth keys and API access tokens for the tailnet. Tailscale REST: GET /tailnet/{tailnet}/keys.

Discovered
tailscale_list_users

List users of the tailnet, optionally filtered by type, role or status. Tailscale REST: GET /tailnet/{tailnet}/users.

Discovered
tailscale_list_webhooks

List the webhook endpoints configured for the tailnet. Tailscale REST: GET /tailnet/{tailnet}/webhooks.

Discovered
tailscale_set_device_name

Set (rename) a device's name. Tailscale REST: POST /device/{deviceId}/name.

Discovered
tailscale_set_device_routes

Set the subnet routes ENABLED for a device (from the routes it advertises). REPLACES the enabled set. Tailscale REST: POST /device/{deviceId}/routes.

Discovered
tailscale_set_device_tags

Set a device's ACL tags. REPLACES the device's existing tags. Tailscale REST: POST /device/{deviceId}/tags.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected153 ms22

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