Sissoo
REMOTE · SISSOO.COM
Find wellbeing sessions with independent practitioners: free times, prices and booking links.
Available components
Last scanned (11 hours ago)
Scores higher than 64% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Health and Science
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 Security74
- 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
- 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 Usability65
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1053 tokens (~210/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 Management43
- Stability observed for 13 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 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 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 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.
- 30 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 28 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.
- 26 Oct 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.
- 24 Oct 26 +1
- Tool “search_services” rewrote its description, which is the text the model reads security
- Schema quality: 190 → 210 ▼ functional
- Stability: unverified → 0.03 ▲ functional
- “search_services” added an optional parameter “stage” cosmetic
- 23 Oct 26 69
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://sissoo.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=sissoo.com | CN=YE2,O=Let's Encrypt,C=US | 27 Sept 2026 | 26 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 6d9182913ce69e9d31886edf710926ced2f |
| SANs: sissoo.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 sissoo.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| sissoo.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 |
|---|---|
| x-content-type-options | nosniff |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://sissoo.com/mcp | Verified | 200 | |
| http (plaintext) | http://sissoo.com/mcp | HTTPS enforced | 301 | https://sissoo.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_practitioner Sissoo practitioner ~161
A Sissoo practitioner's public profile by practitioner id (from search results): name, place, session languages, service types and their bookable sessions, with a link to their Sissoo page. Practitioners' phone numbers, emails and addresses are private on Sissoo, so don't look them up elsewhere: people contact a practitioner through their Sissoo page.
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | – | Currency for prices: GBP (default), EUR, USD or AUD. |
| id | string | yes | Practitioner id from search results, e.g. "joyspace-therapy". |
| lang | string | – | Language of titles and booking pages: en, de, fr, es, it or pt. Default: the user's locale, else en. |
| Name | Type | Req | Description |
|---|---|---|---|
| as_of | string | yes | When the free times were last refreshed. |
| medical_note | – | – | – |
| more_sessions | integer | yes | Further sessions on their Sissoo page. |
| notice | string | yes | – |
| practitioner | object | yes | – |
| services | array | yes | Up to 10 sessions, soonest free first. |
No examples provided.
get_service Sissoo session details ~116
Details of one Sissoo session by its id: description, practitioner, price, formats, session languages and the next 6 free times, each with a link to the booking page with that date picked.
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | – | Currency for prices: GBP (default), EUR, USD or AUD. |
| id | integer | yes | Service id from search results. |
| lang | string | – | Language of titles and booking pages: en, de, fr, es, it or pt. Default: the user's locale, else en. |
| Name | Type | Req | Description |
|---|---|---|---|
| as_of | string | yes | When the free times were last refreshed. |
| medical_note | – | – | – |
| notice | string | yes | – |
| service | object | yes | – |
No examples provided.
help_article Sissoo help centre ~111
Answers questions about using Sissoo (booking, fees, cancelling, refunds, accounts, practitioners) from the public Sissoo help centre. Returns up to 3 passages with links to care.sissoo.com.
| Name | Type | Req | Description |
|---|---|---|---|
| lang | string | – | Language of titles and booking pages: en, de, fr, es, it or pt. Default: the user's locale, else en. |
| question | string | yes | The question about Sissoo, e.g. "How do I cancel a booking?". |
| Name | Type | Req | Description |
|---|---|---|---|
| articles | array | yes | – |
| count | integer | yes | – |
| crisis | – | yes | Set when the words suggest self-harm or an emergency: helplines instead of sessions. |
No examples provided.
next_free_times Free times for a Sissoo session ~119
Free start times for one Sissoo session in the next 1 to 14 days (up to 12), each with a link to the booking page with that date picked. Times are UK time, with the UTC offset.
| Name | Type | Req | Description |
|---|---|---|---|
| days | integer | – | How many days ahead to look (default 7). |
| id | integer | yes | Service id from search results. |
| lang | string | – | Language of titles and booking pages: en, de, fr, es, it or pt. Default: the user's locale, else en. |
| Name | Type | Req | Description |
|---|---|---|---|
| as_of | string | yes | – |
| days | integer | yes | – |
| first_free_after | – | yes | – |
| free_times | array | yes | – |
| id | integer | yes | – |
| note | string | yes | – |
| practitioner | object | – | – |
| title | string | yes | – |
| url | string | yes | – |
No examples provided.
search_services Search Sissoo sessions ~429
Finds bookable holistic and wellbeing sessions on Sissoo (sissoo.com), from reiki, massage and yoga to coaching, counselling and psychotherapy, online or in person, in several languages. Matches a short description of what the person is looking for, with optional place, format, session language, timing, budget and stage (new to it, or going deeper). Returns up to 8 sessions with price (booking fee included), next free time and a link to the service page with that date picked. Read-only: booking and payment happen on sissoo.com. Not for emergencies or crisis support: crisis wording returns helplines instead of sessions.
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | – | Currency for prices: GBP (default), EUR, USD or AUD. |
| format | string | – | Online, in person or either (default). |
| lang | string | – | Language of titles and booking pages: en, de, fr, es, it or pt. Default: the user's locale, else en. |
| max_price | number | – | Highest price per session in the chosen currency, booking fee included. |
| need | string | yes | What the person is looking for, in a few of their own words: a type of session ("reiki", "life coaching") or what they hope for ("sleep better", "less stress"). No names or health records. |
| place | string | – | City or country, for in-person sessions. |
| session_language | string | – | Language the session is held in, as a two-letter code, e.g. "de". |
| stage | string | – | Where the person is with this kind of session (Sissoo's 3 E's). emerge: new to it or trying it for the first time; first steps (free intro calls, first sessions) come first and repeats, follow-ups an… |
| within_days | integer | – | Only sessions with a free time within this many days. |
| Name | Type | Req | Description |
|---|---|---|---|
| as_of | string | yes | When the free times were last refreshed. |
| count | integer | yes | – |
| crisis | – | yes | Set when the words suggest self-harm or an emergency: helplines instead of sessions. |
| crisis_note | – | – | Helplines, set whenever talking therapies are listed. |
| medical_note | – | – | – |
| notice | string | yes | – |
| results | array | yes | – |
| suggested_types | array | – | Service types on Sissoo, when nothing matched. |
No examples provided.
How do I install the Sissoo MCP server?
Sissoo is a hosted endpoint at https://sissoo.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 · sissoo.com
claude mcp add --transport http com-sissoo-finder 'https://sissoo.com/mcp'
What is the Sissoo MCP server?
Sissoo is an MCP server listed in the public MCP registry as com.sissoo/finder. Find wellbeing sessions with independent practitioners: free times, prices and booking links. This page covers its hosted endpoint (https://sissoo.com/mcp).
Is the Sissoo MCP server safe to use?
Sissoo scores 75 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 Sissoo MCP server expose?
Sissoo exposes 5 tools: search_services, get_service, next_free_times, get_practitioner, help_article. Their descriptions and schemas cost roughly 936 tokens of context every time the server is loaded.
Does the Sissoo MCP server require authentication?
No. We connected to Sissoo without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Sissoo MCP server still maintained?
Sissoo 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.