Sessionplan
REMOTE · SESSIONPLAN.DE
Create and edit visual agendas for workshops, trainings, meetings, and events.
Available components
Last scanned (10 hours ago)
Scores higher than 97% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Project Management
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. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation. 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 Usability81
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 309 tokens (~154/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 Management100
- No destabilizing schema changes in the last 30 days.Pass
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 2 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 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
Checks we ran (13)
- TLS certificate
- Authorization
- HTTPS
- HSTS header
- DNSSEC
- Transport
- Schema quality
- Stability
- Tool coverage
- Injection markers
- Destructive annotations
- Judged manipulation
- MCP protocol
Does not apply to this hosted endpoint (2)
- Supply Chain SecurityScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
- Provenance & TransparencyScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
The score does not measure everything. What the score does not measure →
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.
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 18 Sept 26 0
- Stability: 0.97 → pass security
- 16 Sept 26 0
- Schema quality: pass → fail ▼ functional
- Tool coverage: 50% → 100% ▲ functional
- Server version: 1.3.1 → 1.4.0 functional
- “create_session_link” reworded the description of “session” cosmetic
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 20 Aug 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “create_session_link” rewrote its description, which is the text the model reads security
- Tool “decode_session_link” rewrote its description, which is the text the model reads security
- Schema quality: pass → fail ▼ functional
- Stability: unverified → 0.03 ▲ functional
- MCP protocol: Implements a current MCP spec version (2026-07-28). functional
- MCP protocol version: 2025-11-25 → 2026-07-28 functional
- Server version: 1.1.0 → 1.2.0 functional
- “create_session_link” reworded the description of “session” cosmetic
- “decode_session_link” reworded the description of “link” cosmetic
- 19 Aug 26 0
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://sessionplan.de/mcp/
TLS valid
Negotiated TLS 1.3 with TLS_AES_256_GCM_SHA384 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=sessionplan.de | CN=YR2,O=Let's Encrypt,C=US | 22 Oct 2026 | 20 Jan 2027 | RSA 4096 | SHA256-RSA | 680e88c90bb1f8ce6bc4c1d760818dea9be |
| SANs: sessionplan.de, www.sessionplan.de | ||||||
| CN=YR2,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | 4ebd24947e24d394802d84a52fd5b319 |
| 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 sessionplan.de. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | Trust anchor | 20326, 38696 | 8, 8 | Verified |
| de. | DS published | 26755 | 8 | Verified |
| sessionplan.de. | No DS | 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=15768000 |
| content-security-policy | default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https:; style-src 'self' 'unsafe-inline' https:; img-src 'self' data: https:; connect-src 'self' https:; font-src 'self' https:; frame-ancestors 'none'; base-uri 'self'; form-action 'self'; |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | geolocation=(), microphone=(), camera=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://sessionplan.de/mcp/ | Verified | 200 | |
| http (plaintext) | http://sessionplan.de/mcp/ | HTTPS enforced | 301 | https://sessionplan.de/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 →
create_session_link Create Sessionplan ~115
Use this when the user wants a new Sessionplan for a workshop, training, meeting, event, or other timed session, or a revised link after decoding an existing Sessionplan. Pass a complete session object matching inputSchema; partial updates and patches are not accepted. The returned structuredContent.link is an opaque snapshot URL and must be presented verbatim.
| Name | Type | Req | Description |
|---|---|---|---|
| session | object | yes | Canonical format for newly generated Sessionplan documents. Include all required fields and only documented properties. Use declared category/person IDs and the supported item hierarchy. |
| Name | Type | Req | Description |
|---|---|---|---|
| link | string | yes | Opaque, directly openable Sessionplan snapshot URL. Present this exact value verbatim; do not reconstruct, normalize, shorten, decode, or modify it. |
| summary | object | – | Optional compact summary of the encoded session. |
No examples provided.
decode_session_link Open Sessionplan ~103
Use this whenever the user provides a Sessionplan URL, URL hash, or v2 snapshot code and wants it read, summarized, reviewed, validated, or changed. The validated structuredContent.session is the source of truth. For changes, modify the complete decoded session and pass it to create_session_link; the existing snapshot is not modified in place.
| Name | Type | Req | Description |
|---|---|---|---|
| link | string | yes | Unmodified Sessionplan URL, URL hash, or v2 snapshot code supplied by the user. |
| Name | Type | Req | Description |
|---|---|---|---|
| session | object | yes | – |
No examples provided.
How do I install the Sessionplan MCP server?
Sessionplan is a hosted endpoint at https://sessionplan.de/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 · sessionplan.de
claude mcp add --transport http de-sessionplan-sessionplan 'https://sessionplan.de/mcp/'
What is the Sessionplan MCP server?
Sessionplan is an MCP server listed in the public MCP registry as de.sessionplan/sessionplan. Create and edit visual agendas for workshops, trainings, meetings, and events. This page covers its hosted endpoint (https://sessionplan.de/mcp/).
Is the Sessionplan MCP server safe to use?
Sessionplan scores 89 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 Sessionplan MCP server expose?
Sessionplan exposes 2 tools: create_session_link, decode_session_link. Their descriptions and schemas cost roughly 218 tokens of context every time the server is loaded.
Does the Sessionplan MCP server require authentication?
No. We connected to Sessionplan without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Sessionplan MCP server still maintained?
Sessionplan 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.
What did VerifyMCP test on the Sessionplan MCP server?
VerifyMCP ran 13 checks on Sessionplan, covering TLS certificate, Authorization, HTTPS, HSTS header and 9 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.