Common Ground
REMOTE · COMMON-GROUND.LIPMICHAL.WORKERS.DEV
Pick one movie, show, book, artist or restaurant a whole group will enjoy, using Qloo taste data.
Available components
Last scanned (4 hours ago)
Scores higher than 53% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Entertainment and Games
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
- 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 enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- 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 Usability64
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 375 tokens (~187/item across 2 items; 2 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 Management30
- Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage81
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 43% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 2 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (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 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 Nov 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.
- 30 Oct 26 +1
- Tool “plan_night_out” rewrote its description, which is the text the model reads security
- Schema quality: 157 → 187 ▼ functional
- Tool coverage: 33% → 43% ▲ functional
- “plan_night_out” added an optional parameter “date” cosmetic
- 28 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 27 Oct 26 63
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 5 Nov 2026 · Probed https://common-ground.lipmichal.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=lipmichal.workers.dev | CN=WE1,O=Google Trust Services,C=US | 2 Oct 2026 | 31 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | ebf145553d5751d20e0d3cd51e3d7a94 |
| SANs: lipmichal.workers.dev, *.lipmichal.workers.dev | ||||||
| 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 common-ground.lipmichal.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | 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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://common-ground.lipmichal.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://common-ground.lipmichal.workers.dev/mcp | Inconclusive | 405 |
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_common_ground Find common ground for a group ~188
Pick ONE movie, TV show, book, music artist, podcast, restaurant (kind=place, with location) or destination that a whole group will enjoy. Give each person's name and 2 to 5 things they love. Favourites can come from another category with tasteFrom, for example music artists to pick a restaurant, or any for a mix of artists, movies, TV shows and books. Uses Qloo's taste graph to score every candidate for every person and returns the option that makes the least happy person as happy as possible, with a reason per person.
| Name | Type | Req | Description |
|---|---|---|---|
| kind | string | yes | – |
| location | string | – | – |
| members | array | yes | – |
| tasteFrom | string | – | Category of the favourites, when it differs from kind. Example artist, to pick a movie from music. Use any when favourites mix music artists, movies, TV shows and books. |
No output schema declared.
No examples provided.
plan_night_out Plan a night out for a group of friends ~187
Plan dinner, drinks and a live music venue in one city for 2 to 6 friends. Give the city and each friend's name with 1 to 4 music artists, movies, TV shows or books they love. Optionally give an exact night date as YYYY-MM-DD; Qloo then filters venues by that date's weekday only, not by exact opening times, travel or availability. Qloo's cross-domain taste graph turns that shared taste into real venues. Each stop is the venue whose least happy friend is happiest, and Qloo explainability names the favourites behind it, with the share of each friend's taste.
| Name | Type | Req | Description |
|---|---|---|---|
| city | string | yes | City for the night out, for example Lisbon or New York. |
| date | string | – | Optional exact night date as YYYY-MM-DD. Qloo filters places by that date's weekday only. |
| members | array | yes | – |
No output schema declared.
No examples provided.
How do I install the Common Ground MCP server?
Common Ground is a hosted endpoint at https://common-ground.lipmichal.workers.dev/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 · common-ground.lipmichal.workers.dev
claude mcp add --transport http theluckystrike-common-ground 'https://common-ground.lipmichal.workers.dev/mcp'
What is the Common Ground MCP server?
Common Ground is an MCP server listed in the public MCP registry as io.github.theluckystrike/common-ground. Pick one movie, show, book, artist or restaurant a whole group will enjoy, using Qloo taste data. This page covers its hosted endpoint (https://common-ground.lipmichal.workers.dev/mcp).
Is the Common Ground MCP server safe to use?
Common Ground scores 67 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 Common Ground MCP server expose?
Common Ground exposes 2 tools: find_common_ground, plan_night_out. Their descriptions and schemas cost roughly 375 tokens of context every time the server is loaded.
Does the Common Ground MCP server require authentication?
No. We connected to Common Ground without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Common Ground MCP server still maintained?
Common Ground is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.