Revunda: app review complaints
REMOTE · REVUNDA.XYZ
Top complaint themes in 1-star reviews of 531 App Store, Google Play and Shopify apps. Read-only.
Available components
Last scanned (19 hours ago)
Scores higher than 60% of remote servers
Reachable. Last reached 4 Nov 2026.
Category Marketing and SEO
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 Usability61
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1009 tokens (~252/item across 4 items; 4 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 Management13
- Stability observed for 4 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 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 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
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 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Nov 26 0
- Stability: unverified → 0.03 ▲ functional
- 31 Oct 26 71
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 Nov 2026 · Probed https://revunda.xyz/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=revunda.xyz | CN=YR1,O=Let's Encrypt,C=US | 20 Oct 2026 | 18 Jan 2027 | RSA 2048 | SHA256-RSA | 6c5149f30e5f27ea3fb560c532f8721eb48 |
| SANs: revunda.xyz, www.revunda.xyz | ||||||
| CN=YR1,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | a20253f15f2691c05dc1ce13b9bcca4e |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of revunda.xyz. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| xyz. | present | 3599, 18130 | 8, 8 | Verified |
| revunda.xyz. | 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=63072000 |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=(), browsing-topics=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://revunda.xyz/api/mcp | Verified | 200 | |
| http (plaintext) | http://revunda.xyz/api/mcp | HTTPS enforced | 308 | https://revunda.xyz/api/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 →
estimate_one_star_cost Estimate 1-star reviews and the 5-star ratings needed ~247
Same maths as Revunda's 1-star review cost calculator: estimated 1-star reviews per month by complaint theme (sector shares from the 29,785-review study), money exposure if you give a cost per 1-star, 5-star ratings that offset one 1-star, and 5-star ratings needed to reach a target rating. Sectors: parcels, telecom, taxi, energy, news, betting, travel, streaming, insurance, smarthome, banks, shopping, food, health, other.
| Name | Type | Req | Description |
|---|---|---|---|
| cost_per_one_star | number | – | Optional: your own estimate of what one 1-star review costs you, any currency. |
| one_star_share_pct | number | – | Optional: your own % of reviews that are 1-star. If omitted, the sector average is used. |
| rating | number | – | Optional current average rating. |
| ratings_count | integer | – | Optional current number of ratings. |
| reviews_per_month | number | – | Total new reviews per month (all star ratings). |
| sector | string | – | Optional sector key for theme shares and the default 1-star share. |
| target_rating | number | – | Optional target average rating. |
No output schema declared.
No examples provided.
get_app_complaints Get an app's top review complaints ~163
Top complaint themes in an app's low-star reviews, with real counts and shares from Revunda's studies, plus a link to the app's Revunda page. Pass an app name (e.g. 'AccuWeather'), an App Store URL or numeric id, a Google Play URL or package name (e.g. 'com.commbank.netbank'), or a Shopify App Store URL or handle (e.g. 'judgeme'). If the app is not covered, returns covered:false and a link to Revunda's free check for any app.
| Name | Type | Req | Description |
|---|---|---|---|
| app | string | yes | App name, store URL, App Store numeric id, Google Play package name or Shopify app handle. |
| store | string | – | Optional store filter. Default 'any'. |
No output schema declared.
No examples provided.
list_covered_apps List apps covered by Revunda data ~129
List or search the apps that have complaint data in Revunda's studies. Filter by store, by sector/category (e.g. 'Banks & payments', 'Product reviews') or by a name search. Returns name, store, sample size, top complaint and link.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max results, default 25. |
| query | string | – | Optional name search, e.g. 'bank' or 'uber'. |
| sector | string | – | Optional sector or Shopify category, case-insensitive substring match. |
| store | string | – | Optional store filter. Default 'any'. |
No output schema declared.
No examples provided.
what_users_complain_about Complaint theme statistics ~295
How often a complaint theme appears in 1-star reviews overall and by sector, and which apps get it most. App stores themes: login (Login & account access), crash (Crashes & won’t open), slow (Slow, loading & lag), update (Broke after an update), support (Customer service), billing (Charges, fees & refunds), payment (Payment or checkout fails), ux (Redesign & confusing UI), ads (Ads), notif (Notifications & alerts). Shopify App Store themes (market='shopify'): support (Slow or no support), bugs (Bugs & broke the store), billing (Charges & refunds), after_uninstall (Charged after uninstalling/cancelling), price_change (Price increases & plan changes), missing (Missing features & limits), slow (Slow store & app speed), leftover (Code left after uninstall), scam (Called it a scam or misleading), expensive (Too expensive for what it does), hard (Hard to use or set up), lockin (Export, import & migration pain), sync (Sync, orders & inventory errors). Omit theme to get the ranking of all themes.
| Name | Type | Req | Description |
|---|---|---|---|
| market | string | – | 'app_stores' (App Store + Google Play, default) or 'shopify'. |
| theme | string | – | Theme key or words, e.g. 'login', 'ads', 'refund', 'crash'. Optional. |
No output schema declared.
No examples provided.
How do I install the Revunda: app review complaints MCP server?
Revunda: app review complaints is a hosted endpoint at https://revunda.xyz/api/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 · revunda.xyz
claude mcp add --transport http xyz-revunda-app-complaints 'https://revunda.xyz/api/mcp'
What is the Revunda: app review complaints MCP server?
Revunda: app review complaints is an MCP server listed in the public MCP registry as xyz.revunda/app-complaints. Top complaint themes in 1-star reviews of 531 App Store, Google Play and Shopify apps. Read-only. This page covers its hosted endpoint (https://revunda.xyz/api/mcp).
Is the Revunda: app review complaints MCP server safe to use?
Revunda: app review complaints scores 73 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 Revunda: app review complaints MCP server expose?
Revunda: app review complaints exposes 4 tools: get_app_complaints, list_covered_apps, what_users_complain_about, estimate_one_star_cost. Their descriptions and schemas cost roughly 834 tokens of context every time the server is loaded.
Does the Revunda: app review complaints MCP server require authentication?
No. We connected to Revunda: app review complaints without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Revunda: app review complaints MCP server still maintained?
Revunda: app review complaints is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.