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Lago MCP by usefulapi: tool descriptions scored io.usefulapi/lago

tools/list taken
(UTC)
From
Official MCP Registry
Connected to
https://lago.usefulapi.io/mcp
Homepage
usefulapi.io/lago/
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 Lago MCP by usefulapi (io.usefulapi/lago)'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/lago
Average score
41.0 / 100Cloudy
Tools
24
Near-identical descriptions
8

Across the server

Tools whose descriptions are nearly the same

8 of 8 pairs shown, highest description similarity first.
ToolToolDescription similarityName similarity
lago_list_customerslago_list_coupons0.710.50
lago_list_customer_subscriptionslago_list_wallets0.640.40
lago_list_customerslago_list_plans0.620.50
lago_list_customerslago_list_add_ons0.620.40
lago_get_customer_current_usagelago_get_customer_past_usage0.620.67
lago_list_planslago_list_coupons0.620.50
lago_list_couponslago_list_add_ons0.620.40
lago_list_customer_subscriptionslago_list_subscriptions0.500.75

Tools

lago_list_billable_metrics

36 / 100Rain

Purpose
6 / 20
When to use
0 / 20
Arguments
20 / 25
Return value
0 / 15
Constraints and side effects
10 / 10
Examples
0 / 10
  • Major
    The description only restates the name (8 words).restates_name
  • 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

lago_list_coupons

36 / 100Rain

Purpose
6 / 20
When to use
0 / 20
Arguments
20 / 25
Return value
0 / 15
Constraints and side effects
10 / 10
Examples
0 / 10
  • Major
    The description only restates the name (7 words).restates_name
  • Major
    The description is too short (7 words).too_short
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Its description is nearly the same as lago_list_customers's (similarity 0.71); only the names and schemas tell them apart. Say in this description when to use lago_list_customers instead.confusable_pair
  • Minor
    Its description is nearly the same as lago_list_plans's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use lago_list_plans instead.confusable_pair
  • Minor
    Its description is nearly the same as lago_list_add_ons's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use lago_list_add_ons instead.confusable_pair
  • Minor
    No `required` list, so every argument is optional.no_required
  • Minor
    Says nothing about what it returns.no_return_info

lago_list_customers

36 / 100Rain

Purpose
6 / 20
When to use
0 / 20
Arguments
20 / 25
Return value
0 / 15
Constraints and side effects
10 / 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
  • Minor
    Its description is nearly the same as lago_list_coupons's (similarity 0.71); only the names and schemas tell them apart. Say in this description when to use lago_list_coupons instead.confusable_pair
  • Minor
    Its description is nearly the same as lago_list_plans's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use lago_list_plans instead.confusable_pair
  • Minor
    Its description is nearly the same as lago_list_add_ons's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use lago_list_add_ons instead.confusable_pair
  • Minor
    No `required` list, so every argument is optional.no_required
  • Minor
    Says nothing about what it returns.no_return_info

lago_list_plans

36 / 100Rain

Purpose
6 / 20
When to use
0 / 20
Arguments
20 / 25
Return value
0 / 15
Constraints and side effects
10 / 10
Examples
0 / 10
  • Major
    The description only restates the name (8 words).restates_name
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Its description is nearly the same as lago_list_customers's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use lago_list_customers instead.confusable_pair
  • Minor
    Its description is nearly the same as lago_list_coupons's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use lago_list_coupons instead.confusable_pair
  • Minor
    No `required` list, so every argument is optional.no_required
  • Minor
    Says nothing about what it returns.no_return_info

lago_get_plan

38 / 100Rain

Purpose
13 / 20
When to use
0 / 20
Arguments
18 / 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

lago_list_credit_notes

38 / 100Rain

Purpose
13 / 20
When to use
0 / 20
Arguments
15 / 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
    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

lago_list_customer_subscriptions

38 / 100Rain

Purpose
13 / 20
When to use
0 / 20
Arguments
18 / 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 lago_list_wallets's (similarity 0.64); only the names and schemas tell them apart. Say in this description when to use lago_list_wallets instead.confusable_pair
  • Minor
    Its description is nearly the same as lago_list_subscriptions's (similarity 0.50); only the names and schemas tell them apart. Say in this description when to use lago_list_subscriptions 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: external_customer_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lago_list_fees

39 / 100Rain

Purpose
17 / 20
When to use
0 / 20
Arguments
15 / 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

lago_list_invoices

39 / 100Rain

Purpose
17 / 20
When to use
0 / 20
Arguments
15 / 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

lago_list_subscriptions

39 / 100Rain

Purpose
17 / 20
When to use
0 / 20
Arguments
15 / 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 lago_list_customer_subscriptions's (similarity 0.50); only the names and schemas tell them apart. Say in this description when to use lago_list_customer_subscriptions instead.confusable_pair
  • Minor
    No `required` list, so every argument is optional.no_required
  • Minor
    Says nothing about what it returns.no_return_info

lago_analytics_gross_revenue

41 / 100Cloudy

Purpose
14 / 20
When to use
0 / 20
Arguments
15 / 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
    The description mentions none of its 3 or more arguments.params_not_in_description
  • Minor
    Says nothing about what it returns.no_return_info

lago_analytics_mrr

41 / 100Cloudy

Purpose
14 / 20
When to use
0 / 20
Arguments
15 / 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

lago_get_billable_metric

42 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
18 / 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

lago_get_customer

42 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
18 / 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: external_customer_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lago_get_customer_current_usage

42 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
18 / 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 lago_get_customer_past_usage's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use lago_get_customer_past_usage 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: external_customer_id, external_subscription_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lago_get_customer_past_usage

42 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
18 / 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 lago_get_customer_current_usage's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use lago_get_customer_current_usage 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: external_customer_id, external_subscription_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lago_get_customer_portal_url

42 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
18 / 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: external_customer_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lago_get_invoice

42 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
18 / 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: lago_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lago_get_subscription

42 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
18 / 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: external_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lago_list_add_ons

43 / 100Cloudy

Purpose
13 / 20
When to use
0 / 20
Arguments
20 / 25
Return value
0 / 15
Constraints and side effects
10 / 10
Examples
0 / 10
  • Major
    The description is too short (7 words).too_short
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Its description is nearly the same as lago_list_customers's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use lago_list_customers instead.confusable_pair
  • Minor
    Its description is nearly the same as lago_list_coupons's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use lago_list_coupons instead.confusable_pair
  • Minor
    No `required` list, so every argument is optional.no_required
  • Minor
    Says nothing about what it returns.no_return_info

lago_get_credit_note

45 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
18 / 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
  • Minor
    Required identifiers whose description does not say where the value comes from: lago_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lago_list_wallets

45 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
18 / 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
    Its description is nearly the same as lago_list_customer_subscriptions's (similarity 0.64); only the names and schemas tell them apart. Say in this description when to use lago_list_customer_subscriptions 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: external_customer_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lago_create_customer

49 / 100Cloudy

Purpose
14 / 20
When to use
0 / 20
Arguments
18 / 25
Return value
0 / 15
Constraints and side effects
7 / 10
Examples
10 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    String arguments with no constraint or example: currency, legal_name, legal_number, tax_identification_number, phone, url, metadata[].key, metadata[].value.loose_string_param
  • 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: external_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lago_create_event

50 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
18 / 25
Return value
0 / 15
Constraints and side effects
10 / 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

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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