I'm In! Sign-up Sheets
REMOTE · IM-IN.EVENTS
Turn an email, notes or a flyer into a free sign-up sheet with reminders and waitlists.
Available components
Last scanned (21 hours ago)
Scores higher than 56% of remote servers
Reachable. Last reached 18 Oct 2026.
Category Productivity and Notes
Recent critical change
Authorization (17 Oct 2026). See the changelog before you install this server.
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 Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (create_signup_sheet). See how to fix → View diagnostics → Fail
- 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 Usability76
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 350 tokens (~116/item across 3 items; 3 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management20
- Stability observed for 6 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 3 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
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
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.
- 18 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Oct 26 +1
- Authorization: unverified → fail ▼ critical
- HSTS header: unverified → fail ▼ security
- Injection markers: unverified → pass ▲ security
- MCP protocol: unverified → fail ▼ functional
- Endpoint reachability: unreachable → reachable ▲ functional
- Tool coverage: unverified → 100 ▲ functional
- Stability: unverified → 0.17 ▲ functional
- 16 Oct 26 0
- Endpoint reachability: reachable → unreachable ▼ security
- Stability: 0.10 → unverified ▼ security
- Authorization: fail → unverified ▼ security
- HSTS header: fail → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Capabilities: fail → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- 14 Oct 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.
- 13 Oct 26 0
- Schema quality: 103 → 116 ▼ functional
- Stability: unverified → 0.03 ▲ functional
- “create_signup_sheet” reworded the description of “slots” cosmetic
- 12 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 18 Oct 2026 · Probed https://im-in.events/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=im-in.events | CN=WE1,O=Google Trust Services,C=US | 16 Oct 2026 | 14 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | b7177872cbdc5530e21e2a37d1ac5a2 |
| SANs: im-in.events, *.im-in.events | ||||||
| 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 im-in.events. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| events. | present | 12487 | 8 | Verified |
| im-in.events. | 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 |
| 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://im-in.events/api/mcp | Verified | 200 | |
| http (plaintext) | http://im-in.events/api/mcp | HTTPS enforced | 301 | https://im-in.events/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 →
create_signup_sheet Create a live sign-up sheet ~208
Create a live sign-up sheet on im-in.events from a title, slot names and a time zone. Returns the shareable sheet URL and emails a private manage and claim link to owner_email, the user's own address. One sheet per owner email a day.
| Name | Type | Req | Description |
|---|---|---|---|
| description | string | – | Optional sheet description |
| owner_email | string | yes | The user's email; the manage link is sent here |
| slots | array | yes | One line per item people sign up for, 1 spot each. Add " x4" for 4 spots, or " (no limit)" so anyone can sign up, e.g. ["Week 1 snacks", "Setup crew x4", "Coming (no limit)"] |
| starts_at | string | – | Optional ISO datetime of the event |
| title | string | yes | Sheet title, e.g. "Soccer Snack Schedule" |
| tz | string | yes | IANA time zone of the event, e.g. "America/New_York" |
No output schema declared.
No examples provided.
draft_sheet_link Draft a sign-up sheet from the user's words ~109
Turn the user's email, notes, flyer text or description of their event into a link that opens im-in.events with those words in the Describe it box. Pressing Make my draft there builds the whole sign-up sheet (dates, times, place, every role with its count, waitlist, reminders and its look) for the user to check and publish. Creates nothing and needs no account.
| Name | Type | Req | Description |
|---|---|---|---|
| words | string | yes | The user's own words about the event, as complete as they gave them |
No output schema declared.
No examples provided.
list_templates List sign-up sheet templates ~33
List I'm In! sign up sheet templates (potluck, meal train, volunteer shifts, ...) with their prefilled slots.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the I'm In! Sign-up Sheets MCP server?
I'm In! Sign-up Sheets is a hosted endpoint at https://im-in.events/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 · im-in.events
claude mcp add --transport http events-im-in-sign-up-sheets 'https://im-in.events/api/mcp'
What is the I'm In! Sign-up Sheets MCP server?
I'm In! Sign-up Sheets is an MCP server listed in the public MCP registry as events.im-in/sign-up-sheets. Turn an email, notes or a flyer into a free sign-up sheet with reminders and waitlists. This page covers its hosted endpoint (https://im-in.events/api/mcp).
Is the I'm In! Sign-up Sheets MCP server safe to use?
I'm In! Sign-up Sheets scores 66 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 I'm In! Sign-up Sheets MCP server expose?
I'm In! Sign-up Sheets exposes 3 tools: draft_sheet_link, list_templates, create_signup_sheet. Their descriptions and schemas cost roughly 350 tokens of context every time the server is loaded.
Does the I'm In! Sign-up Sheets MCP server require authentication?
No. We connected to I'm In! Sign-up Sheets without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the I'm In! Sign-up Sheets MCP server still maintained?
I'm In! Sign-up Sheets is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.