homeassistant-mcp (tevonsb/homeassistant-mcp) is an MCP server listed on the M8ven Trust Index. It scores 73 out of 100, grade C. It declares 1 tool. No publisher has claimed this listing.

C
Caution
73/100

homeassistant-mcp

Access Home Assistant data and control devices (lights, switches, thermostats, etc).

Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

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Who stands behind it

tevonsb

Source: ModelScope

Is this your MCP?

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Install from

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
🚨
Secret credentials may flow to a network call
17 flows detected: HASS_TOKEN. We can’t prove the destination matches the brand the credential belongs to.
⚠️
Known vulnerabilities in dependencies: 2 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 2 credentials: CLAUDE_API_KEY, HASS_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// tools this server exposes1 tool

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

light_control

Control light devices

// known CVEs in dependencies2 high1 medium4 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

highws@8.16.0GHSA-3h5v-q93c-6h6q

ws affected by a DoS when handling a request with many HTTP headers

highws@8.16.0GHSA-96hv-2xvq-fx4p

ws: Memory exhaustion DoS from tiny fragments and data chunks

mediumajv@8.12.0GHSA-2g4f-4pwh-qvx6

ajv has ReDoS when using `$data` option

lowexpress@4.18.2GHSA-qw6h-vgh9-j6wx

express vulnerable to XSS via response.redirect()

lowexpress@4.18.2GHSA-rv95-896h-c2vc

Express.js Open Redirect in malformed URLs

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
🔐 secretCLAUDE_API_KEY
configCLAUDE_MODEL
configHASS_HOSTYour Home Assistant instance URL
configHASS_SOCKET_URLWebSocket URL for Home Assistant
🔐 secretHASS_TOKENLong-lived access token for Home Assistant
configHASS_URL
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

1/1 tools missing one or more hints — light_control (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint). OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tool test coverage

Only 0/1 tools referenced in tests (0%)

Write tests that reference each tool by name so every tool has at least one test.

Secrets stay with their owner

17 secrets sent to a request target we could not resolve (HASS_TOKEN → dynamic, HASS_TOKEN → dynamic) — often a configured endpoint, not necessarily third-party

Audit where credentials are sent. A NOTION_TOKEN should only reach api.notion.com — never a third-party host.

Production dependencies are patched

0 critical, 2 high severity in production deps — ws@8.16.0 (high), ws@8.16.0 (high)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
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commit: da5c30bc5ef83a7dd96fd1ef8122f0b2f3b8c94b
code hash: cfdb760296cf2461619367eaedce08ed2f5342a33ef98ec12a6cd4e438e35747
view raw JSON →
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