Siena Society
REMOTE · SIENASOCIETY.COM
Find Siena friendship dinners in London: upcoming Thursdays, how it works, and the booking link.
Available components
Last scanned (7 hours ago)
Scores higher than 66% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Productivity and Notes
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 Security83
- 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 is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability76
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 697 tokens (~139/item across 5 items; 5 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 Management10
- Stability observed for 3 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 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 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 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.
- 3 Nov 26 0
- Stability: unverified → 0.03 ▲ functional
- 2 Nov 26 75
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://sienasociety.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=sienasociety.com | CN=WR3,O=Google Trust Services,C=US | 19 Sept 2026 | 18 Dec 2026 | RSA 2048 | SHA256-RSA | 14836746d2aeee7e0a160710728c0f97 |
| SANs: sienasociety.com | ||||||
| CN=WR3,O=Google Trust Services,C=US (CA) | CN=GTS Root R1,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | RSA 2048 | SHA256-RSA | 7ff005a91568d63abc22861684aa4b5a |
| CN=GTS Root R1,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 19 Jun 2020 | 28 Jan 2028 | RSA 4096 | SHA256-RSA | 77bd0d6cdb36f91aea210fc4f058d30d |
| CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 1 Sept 1998 | 28 Jan 2028 | RSA 2048 | SHA1-RSA | 40000000001154b5ac394 |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of sienasociety.com. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| sienasociety.com. | present | 2371 | 13 | Verified |
| sienasociety.com. | Verified address RRset verified with the apex keys |
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=31556926 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://sienasociety.com/mcp | Verified | 200 | |
| http (plaintext) | http://sienasociety.com/mcp | HTTPS enforced | 301 | https://sienasociety.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 →
get_dinner Get a Siena dinner ~97
Gets one Siena dinner in full: date and time, where it happens, table size, seat price, the booking window and the cancellation rule. The restaurant stays private until Siena emails it on the Wednesday before.
| Name | Type | Req | Description |
|---|---|---|---|
| dinner_id | string | yes | The dinner id from list_upcoming_dinners, for example "london-2026-11-05". A Thursday date such as "2026-11-05" also works. |
| Name | Type | Req | Description |
|---|---|---|---|
| dinner | object | yes | – |
| next_step | string | yes | – |
No examples provided.
how_it_works How Siena works ~43
Explains how Siena friendship dinners work: sign-up, matching, the Wednesday email, the seat price and Premium, cancellation and refunds, and links to the policies.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| city | string | yes | – |
| contact | string | yes | – |
| links | object | yes | – |
| matching | string | yes | – |
| policies | object | yes | – |
| price | object | yes | – |
| steps | array | yes | – |
| summary | string | yes | – |
| table_size | string | yes | – |
No examples provided.
list_cities List Siena cities ~32
Lists the cities where Siena runs friendship dinners, with the dinner night and time. Siena runs in London only today.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| cities | array | yes | – |
| note | string | yes | – |
No examples provided.
list_upcoming_dinners List upcoming Siena dinners ~189
Lists upcoming Siena friendship dinners in a city between two dates, and says which ones are open to book. Siena holds one dinner a week, on Thursday at 7:30pm London time, for small groups of strangers who want to make friends. A few holiday Thursdays have no dinner, and the list leaves them out. Booking for a Thursday opens on the Wednesday two weeks before and closes on the Tuesday before at 23:59. With no dates, the tool lists the next 4 Thursdays. It lists up to 12 weeks ahead.
| Name | Type | Req | Description |
|---|---|---|---|
| city | string | – | City name or id. Only "London" has dinners. Defaults to London. |
| from | string | – | First date to include, yyyy-mm-dd, London time. Defaults to today. |
| to | – | – | Last date to include, yyyy-mm-dd, London time. Defaults to 4 weeks after from. |
| Name | Type | Req | Description |
|---|---|---|---|
| city | string | yes | – |
| dinners | array | yes | – |
| every_dinner | object | – | Facts that are the same for every dinner. |
| from | string | yes | – |
| message | string | yes | – |
| to | string | yes | – |
No examples provided.
start_booking Start a Siena booking ~117
Returns the link where the person books a seat at a Siena dinner on sienasociety.com. It books nothing and charges nothing. On the website the person signs up or signs in, answers six short questions the first time, and pays for the seat. Never ask for card details or personal data in chat.
| Name | Type | Req | Description |
|---|---|---|---|
| dinner_id | string | yes | The dinner id from list_upcoming_dinners, for example "london-2026-11-05". A Thursday date such as "2026-11-05" also works. |
| Name | Type | Req | Description |
|---|---|---|---|
| booking_status | string | yes | open: a seat can be booked now. not_open_yet: booking opens on the Wednesday two weeks before. closed: booking closed on the Tuesday before. |
| booking_url | string|null | yes | Null when the dinner is not open to book. |
| dinner_id | string | yes | – |
| message | string | yes | – |
| when | string | yes | – |
No examples provided.
How do I install the Siena Society MCP server?
Siena Society is a hosted endpoint at https://sienasociety.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 · sienasociety.com
claude mcp add --transport http com-sienasociety-siena 'https://sienasociety.com/mcp'
What is the Siena Society MCP server?
Siena Society is an MCP server listed in the public MCP registry as com.sienasociety/siena. Find Siena friendship dinners in London: upcoming Thursdays, how it works, and the booking link. This page covers its hosted endpoint (https://sienasociety.com/mcp).
Is the Siena Society MCP server safe to use?
Siena Society scores 76 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 Siena Society MCP server expose?
Siena Society exposes 5 tools: list_cities, list_upcoming_dinners, get_dinner, how_it_works, start_booking. Their descriptions and schemas cost roughly 478 tokens of context every time the server is loaded.
Does the Siena Society MCP server require authentication?
No. We connected to Siena Society without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Siena Society MCP server still maintained?
Siena Society 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.