Lowvyn
REMOTE · API.LOWVYN.COM · SCANNED SEP 22
Verify Canadian deals, find the same product cheaper across .ca retailers, track CAD price history.
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 Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 8 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- 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 Usability80
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 989 tokens (~123/item across 8 items; 8 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management90
- Stability observed for 27 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
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 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 Lowvyn MCP server?
Lowvyn is a hosted endpoint at https://api.lowvyn.com/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 · api.lowvyn.com
claude mcp add --transport http com-lowvyn-mcp 'https://api.lowvyn.com/mcp'
{
"mcpServers": {
"com-lowvyn-mcp": {
"url": "https://api.lowvyn.com/mcp"
}
}
} {
"servers": {
"com-lowvyn-mcp": {
"type": "http",
"url": "https://api.lowvyn.com/mcp"
}
}
} [mcp_servers.com-lowvyn-mcp] url = "https://api.lowvyn.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-lowvyn-mcp": {
"type": "remote",
"url": "https://api.lowvyn.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-lowvyn-mcp --url 'https://api.lowvyn.com/mcp' --transport streamable-http
mcp_servers:
com-lowvyn-mcp:
url: "https://api.lowvyn.com/mcp" {
"McpServers": {
"com-lowvyn-mcp": {
"Transport": "http",
"Url": "https://api.lowvyn.com/mcp"
}
}
} assistant mcp add com-lowvyn-mcp -t streamable-http -u 'https://api.lowvyn.com/mcp'
{
"mcpServers": {
"com-lowvyn-mcp": {
"type": "http",
"url": "https://api.lowvyn.com/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.
- 22 Sept 26 −2
- Stability: pass → 0.90 functional
- “intent_search” added an optional parameter “sort” cosmetic
- 21 Sept 26 +1
- Stability: fail → pass ▲ security
- 20 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 88 to 91.
- 19 Sept 26 −1
No change was recorded against any check on this day. Stability & Change Management went from 91 to 88.
- 18 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 88 to 91.
- 16 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 81 to 84.
- 14 Sept 26 −2
No change was recorded against any check on this day. Stability & Change Management went from 91 to 78.
- 13 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 88 to 91.
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 22 Sept 2026 · Probed https://api.lowvyn.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=api.lowvyn.com | CN=YE2,O=Let's Encrypt,C=US | 7 Aug 2026 | 5 Nov 2026 | ECDSA 256 | ECDSA-SHA384 | 5f7747104e19510030ae1a73c8e885b875c |
| SANs: api.lowvyn.com | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of api.lowvyn.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| lowvyn.com. | 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; includeSubDomains |
| content-security-policy | default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self'; connect-src 'self'; frame-ancestors 'none' |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | geolocation=(), microphone=(), camera=(), payment=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://api.lowvyn.com/mcp | Verified | 200 | |
| http (plaintext) | http://api.lowvyn.com/mcp | HTTPS enforced | 301 | https://api.lowvyn.com/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 →
find_cheaper ~78
Given a product (by Lowvyn ID or retailer URL), return the same physical product on other Canadian retailers with their current prices and savings. Uses verified UPC matches. Use this when a user wants to know 'can I get this cheaper somewhere else?'.
| Name | Type | Req | Description |
|---|---|---|---|
| idOrUrl | string | yes | Lowvyn product ID or retailer URL |
No output schema declared.
No examples provided.
get_categories ~28
List the product categories Lowvyn covers, with item counts. Useful for narrowing search_products calls.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_price_history ~103
Return the daily price history for a product as (date, price) pairs, up to N days. Use this to verify whether a 'sale' is genuine or whether the price has been higher in the past, or to show a price trend in an answer to the user.
| Name | Type | Req | Description |
|---|---|---|---|
| days | integer | – | How many days back to return; default 90, max 365 |
| idOrUrl | string | yes | Lowvyn product ID or retailer URL |
No output schema declared.
No examples provided.
get_product ~105
Look up a product by Lowvyn ID OR retailer URL (amazon.ca / walmart.ca / bestbuy.ca / canadiantire.ca). Returns title, current price (CAD), Lowvyn Score (0-100), Deal Verdict, and price summary (current / all-time low / all-time high).
| Name | Type | Req | Description |
|---|---|---|---|
| idOrUrl | string | yes | Lowvyn product ID or a retailer URL (amazon.ca/walmart.ca/bestbuy.ca/canadiantire.ca) |
No output schema declared.
No examples provided.
get_retailers ~28
List the Canadian retailers Lowvyn currently tracks, with item counts and last-update timestamps.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
intent_search ~289
Search the Canadian catalogue by a natural-language description of a NEED rather than keywords. Give it what the shopper actually wants (e.g. 'a quiet gaming laptop under $1500', 'a reliable stroller for travel') and it returns the best-matching products with their current price (CAD), Lowvyn Score, and Deal Verdict, plus what it understood (category, budget, must-haves). A relevance model does the matching; the deterministic deal gate decides the verdict — it never inflates a deal. Use this when the user describes a use case, budget, or constraints instead of naming a product; use search_products for a plain category/price filter. Each result carries an id + canonicalUrl you can pass to get_product, verify_deal, or find_cheaper.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | A natural-language description of what the shopper wants, e.g. 'a quiet gaming laptop under $1500' or 'a reliable stroller for travel' |
| sort | string | – | How to order results. 'match' (default) = best match to the described need. 'deal' = order the matches by deal quality (best time to buy first). 'real' = return ONLY matches the deterministic deal ga… |
No output schema declared.
No examples provided.
search_products ~163
Search the Canadian product catalogue. Filter by category slug, max price (CAD), and retailer. Returns up to 20 matching products with current price and Lowvyn Score. Use this when a user is exploring what is available in a category rather than asking about a specific product. Each result carries an id + canonicalUrl you can pass to get_product, verify_deal, find_cheaper, or get_price_history.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | Optional category slug (e.g. 'cribs') |
| maxPrice | number | – | Optional max price in CAD |
| query | string | yes | Free-text search across product titles |
| retailer | string | – | Optional retailer filter: 'amazon', 'walmart', 'bestbuy', or 'canadiantire' |
No output schema declared.
No examples provided.
verify_deal ~195
Given a product (by Lowvyn ID, retailer URL, or a lowvyn.com product URL from another tool's result) and an optional claimed price, return whether the deal is genuine. Compares against Lowvyn's price history and returns a verdict ('real_deal', 'modest_deal', 'average', 'bad_time', 'insufficient_data') plus an explanation. Use this first when a user asks 'is this actually a good price?'. Accepts the id or canonicalUrl from a search_products / intent_search result directly.
| Name | Type | Req | Description |
|---|---|---|---|
| claimedPrice | number | – | The price the deal claims, in CAD; omit to verify the live tracked price |
| idOrUrl | string | yes | Lowvyn product ID, a retailer URL (amazon.ca/walmart.ca/bestbuy.ca/canadiantire.ca), or a lowvyn.com/product-detail URL from another tool's result |
No output schema declared.
No examples provided.
What is the Lowvyn MCP server?
Lowvyn is an MCP server listed in the public MCP registry as com.lowvyn/mcp. Verify Canadian deals, find the same product cheaper across .ca retailers, track CAD price history. This page covers its hosted endpoint (https://api.lowvyn.com/mcp).
Is the Lowvyn MCP server safe to use?
Lowvyn scores 80 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 Lowvyn MCP server expose?
Lowvyn exposes 8 tools: find_cheaper, get_categories, get_price_history, get_product, get_retailers, and 3 more. Their descriptions and schemas cost roughly 989 tokens of context every time the server is loaded.
Does the Lowvyn MCP server require authentication?
No. We connected to Lowvyn without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Lowvyn MCP server still maintained?
Lowvyn is still listed as active in the MCP registry. We last reached this channel on 22 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.