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Mail Blaze MCP by usefulapi: tool descriptions scored io.usefulapi/mailblaze

tools/list taken
(UTC)
From
Official MCP Registry
Connected to
https://mailblaze.usefulapi.io/mcp
Homepage
usefulapi.io/mailblaze/
Repository
github.com/m190/usefulapi-mcp
Scoring rules
v2
Removal
support@forecall.dev
Score this URL as it is today

Scores, issues and names only

This page shows how Mail Blaze MCP by usefulapi (io.usefulapi/mailblaze)'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/mailblaze
Average score
43.5 / 100Cloudy
Tools
26
Near-identical descriptions
1

Across the server

  • Minor
    26 tools. Above 25, models start to tell tools apart less well.many_tools

Tools whose descriptions are nearly the same

1 of 1 pairs shown, highest description similarity first.
ToolToolDescription similarityName similarity
mailblaze_add_subscribermailblaze_add_subscribers_bulk0.610.40

Tools

mailblaze_get_template

21 / 100Rain

Purpose
6 / 20
When to use
0 / 20
Arguments
8 / 25
Return value
0 / 15
Constraints and side effects
7 / 10
Examples
0 / 10
  • Major
    The description only restates the name (9 words).restates_name
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Major
    Arguments without a description: template_uid.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: template_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_get_transactional_email

28 / 100Rain

Purpose
13 / 20
When to use
0 / 20
Arguments
8 / 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
  • Major
    Arguments without a description: email_uid.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: email_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_get_campaign

32 / 100Rain

Purpose
17 / 20
When to use
0 / 20
Arguments
8 / 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
  • Major
    Arguments without a description: campaign_uid.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: campaign_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_get_campaign_inbox_breakdown

34 / 100Rain

Purpose
14 / 20
When to use
0 / 20
Arguments
8 / 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
  • Major
    Arguments without a description: campaign_uid.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: campaign_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_find_subscriber_by_email

36 / 100Rain

Purpose
14 / 20
When to use
0 / 20
Arguments
8 / 25
Return value
7 / 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
  • Major
    Arguments without a description: list_uid, email.param_no_description
  • Minor
    Required identifiers whose description does not say where the value comes from: list_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_get_subscriber_activity

37 / 100Rain

Purpose
14 / 20
When to use
0 / 20
Arguments
16 / 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
    Arguments without a description: email, list_uid.param_no_description
  • Minor
    Says nothing about what it returns.no_return_info

mailblaze_get_subscriber

40 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
16 / 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
    Arguments without a description: list_uid.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: list_uid, subscriber_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_list_subscribers

40 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
16 / 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
    Arguments without a description: list_uid.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: list_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_resubscribe_subscriber

40 / 100Cloudy

Purpose
20 / 20
When to use
5 / 20
Arguments
8 / 25
Return value
0 / 15
Constraints and side effects
7 / 10
Examples
0 / 10
  • Major
    Arguments without a description: list_uid, subscriber_uid.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: list_uid, subscriber_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_list_campaign_events

43 / 100Cloudy

Purpose
20 / 20
When to use
0 / 20
Arguments
16 / 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
    Arguments without a description: campaign_uid, kind.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: campaign_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_get_report_job

44 / 100Cloudy

Purpose
17 / 20
When to use
5 / 20
Arguments
8 / 25
Return value
7 / 15
Constraints and side effects
7 / 10
Examples
0 / 10
  • Major
    Arguments without a description: job_id.param_no_description

mailblaze_list_campaigns

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

mailblaze_list_lists

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

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

mailblaze_list_transactional_emails

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

mailblaze_create_template

45 / 100Cloudy

Purpose
17 / 20
When to use
5 / 20
Arguments
16 / 25
Return value
0 / 15
Constraints and side effects
7 / 10
Examples
0 / 10
  • Minor
    Arguments without a description: name.param_no_description
  • Minor
    Says nothing about what it returns.no_return_info

mailblaze_list_segments

45 / 100Cloudy

Purpose
17 / 20
When to use
5 / 20
Arguments
16 / 25
Return value
0 / 15
Constraints and side effects
7 / 10
Examples
0 / 10
  • Minor
    Arguments without a description: list_uid.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: list_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_get_list

47 / 100Cloudy

Purpose
17 / 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
  • Minor
    Required identifiers whose description does not say where the value comes from: list_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_list_list_fields

48 / 100Cloudy

Purpose
20 / 20
When to use
5 / 20
Arguments
16 / 25
Return value
0 / 15
Constraints and side effects
7 / 10
Examples
0 / 10
  • Minor
    Arguments without a description: list_uid.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: list_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_add_subscriber

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
    Its description is nearly the same as mailblaze_add_subscribers_bulk's (similarity 0.61); only the names and schemas tell them apart. Say in this description when to use mailblaze_add_subscribers_bulk instead.confusable_pair
  • Minor
    Arguments without a description: list_uid, email.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: list_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_add_subscribers_bulk

50 / 100Cloudy

Purpose
20 / 20
When to use
5 / 20
Arguments
13 / 25
Return value
0 / 15
Constraints and side effects
7 / 10
Examples
5 / 10
  • Major
    Arguments without a description: list_uid, subscribers[].email, subscribers[].first_name, subscribers[].last_name.param_no_description
  • Minor
    Its description is nearly the same as mailblaze_add_subscriber's (similarity 0.61); only the names and schemas tell them apart. Say in this description when to use mailblaze_add_subscriber instead.confusable_pair
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    Required identifiers whose description does not say where the value comes from: list_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_unsubscribe_subscriber

50 / 100Cloudy

Purpose
20 / 20
When to use
15 / 20
Arguments
8 / 25
Return value
0 / 15
Constraints and side effects
7 / 10
Examples
0 / 10
  • Major
    Arguments without a description: list_uid, subscriber_uid.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: list_uid, subscriber_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_get_campaign_summaries

53 / 100Cloudy

Purpose
20 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 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
    Says nothing about what it returns.no_return_info

mailblaze_create_campaign

55 / 100Cloudy

Purpose
20 / 20
When to use
5 / 20
Arguments
15 / 25
Return value
0 / 15
Constraints and side effects
10 / 10
Examples
5 / 10
  • Major
    Arguments without a description: from_name, reply_to, subject, list_uid, template_uid.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: list_uid, template_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_update_subscriber

55 / 100Cloudy

Purpose
20 / 20
When to use
5 / 20
Arguments
13 / 25
Return value
0 / 15
Constraints and side effects
7 / 10
Examples
10 / 10
  • Major
    Arguments without a description: list_uid, subscriber_uid, first_name, last_name.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: list_uid, subscriber_uid. Name the tool or the place that returns it, or models look it up first.id_source_missing

mailblaze_send_transactional_email

62 / 100Cloudy

Purpose
20 / 20
When to use
15 / 20
Arguments
17 / 25
Return value
0 / 15
Constraints and side effects
10 / 10
Examples
0 / 10
  • Minor
    Arguments without a description: to_email, reply_to_email, reply_to_name, subject.param_no_description
  • Minor
    Says nothing about what it returns.no_return_info

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.

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