AddEvent MCP by usefulapi: tool descriptions scored io.usefulapi/addevent

tools/list taken: 2026-11-02 (UTC)
From: Official MCP Registry
Connected to: https://addevent.usefulapi.io/mcp
Homepage: usefulapi.io/addevent/
Repository: github.com/m190/usefulapi-mcp
Scoring rules: v2
Removal: support@forecall.dev

Scores, issues and names only

This page shows how AddEvent MCP by usefulapi (io.usefulapi/addevent)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

servers/io.usefulapi/addevent

Average score: 50.6 / 100Cloudy
Tools: 18
Near-identical descriptions: 1

Across the server

Tools whose descriptions are nearly the same

1 of 1 pairs shown, highest description similarity first.
Tool	Tool	Description similarity	Name similarity
addevent_list_event_templates	addevent_list_calendar_templates	0.62	0.60

Tools

addevent_get_calendar

44 / 100Cloudy

Purpose: 14 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

addevent_get_calendar_subscriber

44 / 100Cloudy

Purpose: 14 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

addevent_get_rsvp_attendee

44 / 100Cloudy

Purpose: 14 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

addevent_list_calendar_templates

44 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 20 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Its description is nearly the same as addevent_list_event_templates's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use addevent_list_event_templates instead.confusable_pair
Minor
No `required` list, so every argument is optional.no_required
Minor
Says nothing about what it returns.no_return_info

addevent_list_event_templates

46 / 100Cloudy

Purpose: 14 / 20
When to use: 0 / 20
Arguments: 25 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Its description is nearly the same as addevent_list_calendar_templates's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use addevent_list_calendar_templates instead.confusable_pair
Minor
Says nothing about what it returns.no_return_info

addevent_list_rsvp_forms

46 / 100Cloudy

Purpose: 14 / 20
When to use: 0 / 20
Arguments: 25 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

addevent_list_calendars

47 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 20 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
No `required` list, so every argument is optional.no_required
Minor
The description mentions none of its 3 or more arguments.params_not_in_description
Minor
Says nothing about what it returns.no_return_info

addevent_list_calendar_subscribers

49 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 17 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: sort_by.param_no_description
Minor
No `required` list, so every argument is optional.no_required
Minor
Says nothing about what it returns.no_return_info

addevent_list_timezones

49 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 20 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
No `required` list, so every argument is optional.no_required
Minor
Says nothing about what it returns.no_return_info

addevent_update_calendar

49 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 17 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: weekday_begin, description, landing_page_template_id, embeddable_calendar_template_id.param_no_description
Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: calendar_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

addevent_list_events

51 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 19 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Minor
No `required` list, so every argument is optional.no_required
Minor
Says nothing about what it returns.no_return_info

addevent_get_event

52 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

addevent_create_event

54 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 22 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

addevent_update_event

54 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 22 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: event_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

addevent_create_calendar

55 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

addevent_list_rsvp_attendees

55 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: sort_by.param_no_description
Minor
No `required` list, so every argument is optional.no_required

addevent_update_rsvp_attendee

63 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 19 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Minor
Arguments without a description: attending.param_no_description
Minor
Required identifiers whose description does not say where the value comes from: attendee_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

addevent_create_rsvp_attendee

65 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Minor
The description mentions none of its 3 or more arguments.params_not_in_description
Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: event_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

What static scoring cannot tell

This score reads only the text of each description and schema: it says what is written, not what a model will do. Short tools whose names already say what they do, such as browser_close, score low here even when models use them well, and in our measurements current models chose the right tool in one step even from one-line descriptions, as long as the names and schemas differed. What the text cannot show, such as what happens over several steps and whether an added sentence helps or misleads, is what an evaluation measures, on the Pro and Team plans.

Is your server listed here and you would rather it were not? Email support@forecall.dev, and we will take it off within 7 days.

All scored servers