# Evenium MCP by usefulapi (remote · evenium.usefulapi.io)

Read Evenium events, guests, contacts and hotels; register guests and update contacts and statuses.

- Trust score: 18/100 (low)
- Change this week: −45
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-06

## Components

- remote · `evenium.usefulapi.io`: 18/100 (this document), [markdown](https://verifymcp.io/servers/io-usefulapi-evenium/evenium.md), [page](https://verifymcp.io/servers/io-usefulapi-evenium/evenium)

## Channel facts

- Endpoint: `https://evenium.usefulapi.io/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.12.2`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-06.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not yet verified: we couldn't confirm whether this endpoint requires it.
  - HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 0/100
  - Transport check failed: declared streamable-http, but the endpoint redirected instead of responding directly.
- **Schema Quality & AI Usability**: 0/100
  - Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 0/100
  - Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.
- **Tool Safety**: 0/100
  - Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.
- **Capabilities**: 0/100
  - Capabilities not yet verified: we couldn't read the endpoint's capabilities.

**Unverified: 5 categories.** Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### How do I install the Evenium MCP by usefulapi server?

Evenium MCP by usefulapi is a hosted endpoint at https://evenium.usefulapi.io/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.

### Claude

```bash
claude mcp add --transport http io-usefulapi-evenium 'https://evenium.usefulapi.io/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "io-usefulapi-evenium": {
      "url": "https://evenium.usefulapi.io/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "io-usefulapi-evenium": {
      "type": "http",
      "url": "https://evenium.usefulapi.io/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.io-usefulapi-evenium]
url = "https://evenium.usefulapi.io/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-usefulapi-evenium": {
      "type": "remote",
      "url": "https://evenium.usefulapi.io/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add io-usefulapi-evenium --url 'https://evenium.usefulapi.io/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  io-usefulapi-evenium:
    url: "https://evenium.usefulapi.io/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "io-usefulapi-evenium": {
      "Transport": "http",
      "Url": "https://evenium.usefulapi.io/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add io-usefulapi-evenium -t streamable-http -u 'https://evenium.usefulapi.io/mcp'
```

### Other

```json
{
  "mcpServers": {
    "io-usefulapi-evenium": {
      "type": "http",
      "url": "https://evenium.usefulapi.io/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-06 (score 18, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-11-01 (score 18, −48)

- [security regression] Endpoint reachability: reachable → not serving MCP
- [security regression] Tool safety: pass → unverified
- [security regression] Authorization: pass → unverified
- [security regression] Stability: 0.17 → unverified
- [functional regression] Schema quality: 100 → unverified
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified

### 2026-10-31 (score 66, +3)

- [security improvement] Authorization: partial → pass
- [functional improvement] MCP protocol: fail → pass
- [functional] New prompt “check_hotel_bookings_for_guests”
- [functional] New prompt “invite_people_to_an_event”
- [functional] New prompt “mark_attendance_after_the_event”
- [functional] New prompt “review_a_session_s_registrations”
- [functional] New prompt “see_who_has_not_answered_an_invitation”
- [functional] New prompt “update_a_guest_s_status_after_an_email_reply”
- [functional] MCP protocol version: 2025-06-18 → 2025-11-25
- [functional] Server version: 1.7.0 → 1.9.0
- [functional] Server version: 1.6.0 → 1.7.0
- [functional] Server version: 1.5.2 → 1.6.0

### 2026-10-30 (score 63, +1)

- [functional] Server version: 1.5.1 → 1.5.2
- [functional] Server version: 1.5.0 → 1.5.1

### 2026-10-29 (score 62, 0)

- [functional] Server version: 1.4.0 → 1.5.0
- [functional] Server version: 1.3.0 → 1.4.0

### 2026-10-28 (score 62, +1)

- [functional] Server version: 1.1.0 → 1.3.0

### 2026-10-27 (score 61, 0)

- [functional improvement] Stability: unverified → 0.03
- [functional] Server version: 1.0.0 → 1.1.0

### 2026-10-26 (score 61)

First indexed and scored.

## MCP tools (19)

### `evenium_list_events` (~493 tokens)

List events

List the events of the Evenium account, with id, title, dates, status and creation date. Filter by title (partial match), status and start/end/creation dates. Use an event id with the guest and session tools. GET /events.

Input parameters:

- `created_after` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `created_before` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `ends_after` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `ends_before` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `first_result` (integer): Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result.
- `max_results` (integer): Results per page, 1-100 (default 25).
- `starts_after` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `starts_before` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `status` (string): FUTURE = open, DRAFT, CLOSED, ARCHIVED, CANCELED, DELETED, CLONEABLE = template.
- `title` (string): Events whose title is like this text.

### `evenium_get_event` (~77 tokens)

Get event

One event by id: title, description, dates, status, site path and its fields (type, your external id, ...). GET /events/{eventId}.

Input parameters:

- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).

### `evenium_list_guests` (~257 tokens)

List guests

List the guests (invited contacts) of an event with name, email, company, registration status (e.g. CONFIRMED, DECLINED, UNANSWERED), category and fields. Filter by status, name, email, company or last update. GET /events/{eventId}/guests.

Input parameters:

- `company` (string): Company like this text.
- `email` (string): Email equal to this.
- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
- `first_name` (string): First name like this text.
- `first_result` (integer): Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result.
- `last_name` (string): Last name like this text.
- `max_results` (integer): Results per page, 1-100 (default 25).
- `status` (string): Only guests with exactly this registration status.
- `updated_since` (string): Only guests updated after this date (RFC 3339).
- `updated_until` (string): Only guests updated until this date (RFC 3339).

### `evenium_get_guest` (~170 tokens)

Get guest

One guest of an event, by contact id or by guest code: name, email, status, category and fields (event-only fields flagged). Optionally include REGISTRATION (registrations to sessions), PRESENCE and SIGNATURE data. GET /events/{eventId}/guests/{contactId} or /guests/guestCode/{guestCode}.

Input parameters:

- `contact_id`: The guest's contact id. Give this or guest_code.
- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
- `guest_code` (string): The guest's code at the event (e.g. D4571). Give this or contact_id.
- `include` (array): Extra data to return.

### `evenium_get_guest_status` (~118 tokens)

Get guest status

The registration status of one guest at an event (e.g. CONFIRMED, DECLINED, CANCELED). GET /events/{eventId}/guests/{contactId}/status.

Input parameters:

- `contact_id` (required): Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.
- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).

### `evenium_get_guest_post_status` (~115 tokens)

Get guest attendance

The attendance (post) status of one guest after the event: UNKNOWN, NO_SHOW or PRESENT. GET /events/{eventId}/guests/{contactId}/postStatus.

Input parameters:

- `contact_id` (required): Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.
- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).

### `evenium_get_guest_accommodations` (~129 tokens)

Get guest accommodations

The hotel room bookings of one guest at an event: room id, check-in and check-out dates, status. Not available on the evenium.net platform. GET /events/{eventId}/guests/{contactId}/accommodations.

Input parameters:

- `contact_id` (required): Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.
- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).

### `evenium_list_hotels` (~107 tokens)

List hotels

The hotels of an event with name, group, stars, contact details and, if asked, full location and rooms. Not available on the evenium.net platform. GET /events/{eventId}/hotels.

Input parameters:

- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
- `include` (array): Extra hotel properties: location (full address), rooms (room list).

### `evenium_create_guest` (~201 tokens)

Create guest

WRITE: invite a person to an event. Either invite an existing contact (contact_id) or create a guest from scratch (first_name, last_name, email, ...), which may also create a new contact. The optional status sets the registration status (the invitation emails of the event may follow Evenium's own rules). POST /events/{eventId}/guests.

Input parameters:

- `company` (string)
- `contact_id` (integer): Evenium contact id of an existing contact to invite. If set, the name fields are ignored.
- `email` (string)
- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
- `first_name` (string)
- `gender` (string)
- `last_name` (string)
- `status` (string): Registration status to give the guest (default chosen by Evenium).

### `evenium_update_guest_status` (~151 tokens)

Update guest status

WRITE: set the registration status of a guest at an event (e.g. CONFIRMED, DECLINED, CANCELED). Can trigger Evenium's own workflows for that status. Read the current value first with evenium_get_guest_status. PUT /events/{eventId}/guests/{contactId}/status.

Input parameters:

- `contact_id` (required): Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.
- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
- `status` (string, required)

### `evenium_update_guest_post_status` (~129 tokens)

Update guest attendance

WRITE: set the attendance (post) status of a guest: PRESENT, NO_SHOW or UNKNOWN (for example after check-in). PUT /events/{eventId}/guests/{contactId}/postStatus.

Input parameters:

- `contact_id` (required): Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.
- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
- `post_status` (string, required)

### `evenium_list_contacts` (~164 tokens)

List contacts

List the contacts of the address book (id, your custom id, name, email, company and fields). Filter by name, email, company or last update. GET /contacts.

Input parameters:

- `company` (string): Company like this text.
- `email` (string): Email equal to this.
- `first_name` (string): First name like this text.
- `first_result` (integer): Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result.
- `last_name` (string): Last name like this text.
- `max_results` (integer): Results per page, 1-100 (default 25).
- `updated_since` (string): Only contacts updated after this date (RFC 3339).

### `evenium_get_contact` (~75 tokens)

Get contact

One contact by Evenium id or `ext:<customId>`: name, gender, email, company and fields. GET /contacts/{contactId}.

Input parameters:

- `contact_id` (required): Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.

### `evenium_get_contact_events` (~424 tokens)

Get contact events

The events a contact is invited to, with the contact's registration (status, post status, category) in each. Filter by event start, end or creation date. GET /contacts/{contactId}/events.

Input parameters:

- `contact_id` (required): Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.
- `created_after` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `created_before` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `ends_after` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `ends_before` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `starts_after` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `starts_before` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).

### `evenium_create_contact` (~144 tokens)

Create contact

WRITE: add a contact to the address book (name, email, company, optional custom id and fields). Does not invite them to an event (use evenium_create_guest). May create a duplicate of an existing person: search with evenium_list_contacts first. POST /contacts.

Input parameters:

- `company` (string)
- `custom_id` (string): Your own id for this contact (later usable as `ext:<id>`).
- `email` (string)
- `fields` (array): Extra contact fields as {name, value} pairs.
- `first_name` (string)
- `gender` (string)
- `last_name` (string, required)

### `evenium_update_contact` (~114 tokens)

Update contact

WRITE: change a contact's email, company or fields (only what you pass is sent). The change applies to the contact everywhere, including its guest records. PUT /contacts/{contactId}.

Input parameters:

- `company` (string)
- `contact_id` (required): Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.
- `email` (string)
- `fields` (array): Extra contact fields as {name, value} pairs.

### `evenium_list_event_parts` (~488 tokens)

List event sessions

List the event parts (sessions, workshops, activities) of an event with title, dates, nature, code and location. Filter by title and start/end/update dates. GET /events/{eventId}/eventParts.

Input parameters:

- `ends_after` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `ends_before` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
- `first_result` (integer): Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result.
- `max_results` (integer): Results per page, 1-100 (default 25).
- `starts_after` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `starts_before` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `title` (string): Sessions whose title is like this text.
- `updated_after` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
- `updated_before` (string): RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).

### `evenium_get_event_part` (~99 tokens)

Get event session

One event part (session) by id: title, dates, nature, code, location and fields. GET /events/{eventId}/eventParts/{eventPartId}.

Input parameters:

- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
- `event_part_id` (required): Event part (session) id, from evenium_list_event_parts.

### `evenium_list_event_part_registrations` (~204 tokens)

List session registrations

The registrations to one session: contact id, status, attendance, category and dates. With include_deleted, deleted registrations are returned too (status DELETED). GET /events/{eventId}/eventParts/{eventPartId}/registrations.

Input parameters:

- `event_id` (required): Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
- `event_part_id` (required): Event part (session) id, from evenium_list_event_parts.
- `first_result` (integer): Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result.
- `include_deleted` (boolean): Also return deleted registrations (queryMode=SYNCHRONIZE).
- `max_results` (integer): Results per page, 1-100 (default 25).
- `updated_since` (string): Only registrations updated after this date (RFC 3339).

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/io-usefulapi-evenium/evenium#diagnostics

## Score history

- 2026-11-06: 18
- 2026-11-05: 18
- 2026-11-04: 18
- 2026-11-03: 18
- 2026-11-02: 18
- 2026-11-01: 18
- 2026-10-31: 66
- 2026-10-30: 63
- 2026-10-29: 62
- 2026-10-28: 62
- 2026-10-27: 61
- 2026-10-26: 61

## Common questions

### What is the Evenium MCP by usefulapi server?

Evenium MCP by usefulapi is listed in the public MCP registry as io.usefulapi/evenium. Read Evenium events, guests, contacts and hotels; register guests and update contacts and statuses. This page covers its hosted endpoint (https://evenium.usefulapi.io/mcp).

### Is the Evenium MCP by usefulapi server safe to use?

Evenium MCP by usefulapi scores 18 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 Evenium MCP by usefulapi server expose?

Evenium MCP by usefulapi exposes 19 tools: evenium_list_events, evenium_get_event, evenium_list_guests, evenium_get_guest, evenium_get_guest_status, and 14 more. Their descriptions and schemas cost roughly 3,659 tokens of context every time the server is loaded.

### Does the Evenium MCP by usefulapi server require authentication?

Its publisher declares no required credentials for Evenium MCP by usefulapi. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.

### Is the Evenium MCP by usefulapi server still maintained?

Evenium MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 6 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 Evenium MCP by usefulapi server?

VerifyMCP ran 4 checks on Evenium MCP by usefulapi, covering TLS certificate, HSTS header, DNSSEC and Transport. 7 items could not be completed, a gap on our side rather than a finding about Evenium MCP by usefulapi: Authorization, HTTPS, Schema quality, Stability and 3 more. 5 categories score 0 for that reason, because we only credit what we can confirm. 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.

## Links

- Remote endpoint: https://evenium.usefulapi.io/mcp
- Repository: https://github.com/m190/usefulapi-mcp
- Website: https://usefulapi.io/evenium/
- Changelog RSS feed: https://verifymcp.io/servers/io-usefulapi-evenium/evenium.xml
- Changelog JSON feed: https://verifymcp.io/servers/io-usefulapi-evenium/evenium/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/io-usefulapi-evenium/evenium.json
- HTML version of this page: https://verifymcp.io/servers/io-usefulapi-evenium/evenium