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Tailscale EchoSAFE

mcp/remyguercio/tailscale-echo
MCP server by remyguercio · fastmcp · mcp · mcp server · Audited 2026-10-09
⚑ Report / re-scanSource ↗

Identity aware MCP server example using Tailscale serve.

Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
1 1r · 0w · 0d
Transport
streamable-http
License
BSD-3-Clause
Stars
24
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

Create an identiy aware MCP server that runs inside your private Tailscale network (Tailnet). This example leverages identity headers that are passed through to applications running behind tailscale serve.

Using this as starting point you can create MCP servers that are identity aware (with access to the logged in user's email) and can access internal APIs or services on thier behalf.

Instructions

Starting the Server

  1. If you don't already have a Tailnet setup you'll need to signup for one.
  2. Create an API auth key and save it into a .env file in the root of this project with the following format: TS_AUTHKEY=tskey-auth-...
  3. With Docker already installed, run docker compose up to start the server.

This will spin up two containers. The MCP server and a Tailscale container running tailscale serve as a proxy to your tailnet.

Using the Server

If you have an MCP Client that supports direct access to Streaming HTTP MCP servers, then you should be able to connect to the server by pointing it to https://ts-mcp-echo.yourtailnetname.ts.net/mcp.

Claude Desktop

Claude desktop does not currently support remote MCP servers (only stdio), but you can use the mcp-remote tool (or any other proxy) to connect to it.

  1. Install mcp-remote with npm install -g mcp-remote
  2. Add the following configuration to your claude_desktop_config.json file:
{
"mcpServers": {
"tailscale-remote-echo-example": {
"command": "npx",
"args": [
"mcp-remote",
"https://ts-mcp-echo.yourtailnetname.ts.net/mcp"
]
Read from source at commit 604265f032dbOBSERVED · 2026-10-09
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.

claude-code
claude mcp add tailscale-mcp-echo -- uvx tailscale-mcp-echo
claude-desktop
{
  "mcpServers": {
    "tailscale-mcp-echo": {
      "command": "uvx",
      "args": [
        "tailscale-mcp-echo"
      ]
    }
  }
}
03

Exposed tools (1)

1 read · 0 write · 0 destructive.

ToolRiskDescription
greetreadreq: Request = get_http_request()
04

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfaceWARN
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
none-observed
Shell
none-observed
Dependencies
pinned
Secrets in source
none-found

Findings (1)

MEDIUMAuth / authz · mcp.remote_no_auth · CWE-287, CWE-862
streamable-http
Why it matters. a network transport with no auth environment variable found
Fix. require a token

Gates applied: no_behavioural_pass.

Audited 2026-10-09 · audit v0.4.1 · source sha 604265f032dbfull audit observations/trust-audit/mcp-server/remyguercio__tailscale-echo.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-09604265f032dbSAFEB89first audit
06

Questions

What is the Tailscale Echo MCP server?

Identity aware MCP server example using Tailscale serve.

What tools does Tailscale Echo expose?

1 in total: 1 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is Tailscale Echo safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.

What credentials does Tailscale Echo need?

No credential environment variables were found in its source, so it appears to need none.

How does Tailscale Echo run?

It speaks streamable-http, so it runs as a service you connect to over the network. It is published on PyPI as tailscale-mcp-echo.

How current is this page?

The grade is for one exact copy of the source (604265f032db), read on 2026-10-09. The repository is watched and re-audited when it changes.

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