Window Sticker
REMOTE · WINDOWSTICKER.ORG · SCANNED OCT 4
Original factory window stickers (Monroney labels) by VIN for 20 makes, plus an NHTSA spec decode.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability79
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 375 tokens (~125/item across 3 items; 3 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
- Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the Window Sticker MCP server?
Window Sticker is a hosted endpoint at https://windowsticker.org/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · windowsticker.org
claude mcp add --transport http org-windowsticker-window-sticker 'https://windowsticker.org/mcp'
{
"mcpServers": {
"org-windowsticker-window-sticker": {
"url": "https://windowsticker.org/mcp"
}
}
} {
"servers": {
"org-windowsticker-window-sticker": {
"type": "http",
"url": "https://windowsticker.org/mcp"
}
}
} [mcp_servers.org-windowsticker-window-sticker] url = "https://windowsticker.org/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"org-windowsticker-window-sticker": {
"type": "remote",
"url": "https://windowsticker.org/mcp",
"enabled": true
}
}
} openclaw mcp add org-windowsticker-window-sticker --url 'https://windowsticker.org/mcp' --transport streamable-http
mcp_servers:
org-windowsticker-window-sticker:
url: "https://windowsticker.org/mcp" {
"McpServers": {
"org-windowsticker-window-sticker": {
"Transport": "http",
"Url": "https://windowsticker.org/mcp"
}
}
} assistant mcp add org-windowsticker-window-sticker -t streamable-http -u 'https://windowsticker.org/mcp'
{
"mcpServers": {
"org-windowsticker-window-sticker": {
"type": "http",
"url": "https://windowsticker.org/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Sept 26 +7
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Sept 26 +1
- Stability: unverified → 0.03 ▲ functional
- 26 Sept 26 67
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 4 Oct 2026 · Probed https://windowsticker.org/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=windowsticker.org | CN=WE1,O=Google Trust Services,C=US | 26 Aug 2026 | 24 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | 6d274705e292b5160e226059e4cbf921 |
| SANs: windowsticker.org, www.windowsticker.org, *.www.windowsticker.org | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of windowsticker.org. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| org. | present | 26974 | 8 | Verified |
| windowsticker.org. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000 |
| content-security-policy | frame-ancestors 'self' |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=(), payment=(), usb=(), interest-cohort=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://windowsticker.org/mcp | Verified | 200 | |
| http (plaintext) | http://windowsticker.org/mcp | HTTPS enforced | 301 | https://windowsticker.org/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_window_sticker Get a window sticker by VIN ~111
Look up the original factory window sticker (Monroney label) for a 17-character VIN, with an NHTSA specification decode. Returns links, never the PDF itself: `page` is the result page to give a person, and `pdf` is the label when one exists. For Toyota, Lexus, Nissan and Infiniti it returns only labels we already hold. Free, no key.
| Name | Type | Req | Description |
|---|---|---|---|
| vin | string | yes | 17-character VIN. VINs never contain I, O or Q. |
| Name | Type | Req | Description |
|---|---|---|---|
| vehicle | – | yes | NHTSA vPIC decode. Null when vPIC did not recognise the VIN. |
| vin | string | yes | – |
| warning | – | yes | – |
| windowSticker | object | yes | – |
No examples provided.
which_makes_are_covered Which makes are covered ~52
The 20 makes that return an original factory window sticker, by source, with the model years each answers for and the last day it returned a label. Every other make gets a specification decode only.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| asOf | string | yes | – |
| coverageUrl | string | yes | – |
| notes | array | yes | – |
| sources | array | yes | – |
No examples provided.
why_no_sticker Why no window sticker ~111
Why a make, or a make and model year, has no window sticker here, and where to get one instead. Covers makes we get labels for (Ford only while a car is new, Toyota from 2025) and makes we don’t (Honda, Mazda, Tesla).
| Name | Type | Req | Description |
|---|---|---|---|
| make | string | yes | Make name, such as Ford, Chevrolet or Honda. |
| model_year | integer | – | Model year, such as 2019. Optional; the Toyota and Lexus answer depends on it. |
| Name | Type | Req | Description |
|---|---|---|---|
| headline | string | yes | – |
| make | string | yes | – |
| modelYear | – | yes | – |
| moreUrl | string | yes | – |
| reason | string | yes | – |
| source | – | yes | – |
| steps | array | yes | – |
| supported | boolean | yes | We have a source of original labels for this make. |
| warning | – | yes | – |
No examples provided.
What is the Window Sticker MCP server?
Window Sticker is an MCP server listed in the public MCP registry as org.windowsticker/window-sticker. Original factory window stickers (Monroney labels) by VIN for 20 makes, plus an NHTSA spec decode. This page covers its hosted endpoint (https://windowsticker.org/mcp).
Is the Window Sticker MCP server safe to use?
Window Sticker scores 78 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Window Sticker MCP server expose?
Window Sticker exposes 3 tools: get_window_sticker, which_makes_are_covered, why_no_sticker. Their descriptions and schemas cost roughly 274 tokens of context every time the server is loaded.
Does the Window Sticker MCP server require authentication?
No. We connected to Window Sticker without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Window Sticker MCP server still maintained?
Window Sticker is still listed as active in the MCP registry. We last reached this channel on 4 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.