SparkPay: tool descriptions scored dev.sparkpay/sparkpay

tools/list taken: 2026-11-02 (UTC)
From: Official MCP Registry
Connected to: https://sparkpay.dev/api/mcp/mcp
Homepage: sparkpay.dev
Scoring rules: v2
Removal: support@forecall.dev

Scores, issues and names only

This page shows how SparkPay (dev.sparkpay/sparkpay)'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/dev.sparkpay/sparkpay

Average score: 44.8 / 100Cloudy
Tools: 25
Near-identical descriptions: 0

Across the server

Minor
The server has no instructions. Say there, once, what the server is for and when to use it: Claude Code and Gemini CLI read the instructions before the tool descriptions.instructions_missing

Tools

list_referrals

26 / 100Rain

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 2 / 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: app_id, status, limit, include_samples.param_no_description
Minor
String arguments with no constraint or example: app_id.loose_string_param
Minor
No `required` list, so every argument is optional.no_required
Minor
The meaning of the boolean argument include_samples is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

list_coupons

30 / 100Rain

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 0 / 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
Major
Arguments without a description: app_id, active_only, limit.param_no_description
Minor
String arguments with no constraint or example: app_id.loose_string_param
Minor
No `required` list, so every argument is optional.no_required
Minor
The meaning of the boolean argument active_only is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

list_recent_payments

32 / 100Rain

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

Major
Arguments without a description: app_id, limit, include_samples.param_no_description
Minor
String arguments with no constraint or example: app_id.loose_string_param
Minor
No `required` list, so every argument is optional.no_required
Minor
The meaning of the boolean argument include_samples is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

revenue_by_app

34 / 100Rain

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

Major
Arguments without a description: include_samples.param_no_description
Minor
No `required` list, so every argument is optional.no_required
Minor
The meaning of the boolean argument include_samples is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

list_subscriptions

37 / 100Rain

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 3 / 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: app_id, status, payment_type, limit, include_samples.param_no_description
Minor
String arguments with no constraint or example: app_id.loose_string_param
Minor
No `required` list, so every argument is optional.no_required
Minor
The meaning of the boolean argument include_samples is unclear.vague_boolean

plan_app_kit

37 / 100Rain

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 3 / 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
Major
Arguments without a description: app_name.param_no_description
Minor
String arguments with no constraint or example: app_name.loose_string_param

get_customer

39 / 100Rain

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 3 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: email, app_id.param_no_description
Minor
String arguments with no constraint or example: email, app_id.loose_string_param

list_recent_cancellations

39 / 100Rain

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

Major
Arguments without a description: app_id, limit, include_samples.param_no_description
Minor
String arguments with no constraint or example: app_id.loose_string_param
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
The meaning of the boolean argument include_samples is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

update_plan_pricing

39 / 100Rain

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

Major
Arguments without a description: app_id, updates, updates[].tier, updates[].payment_type, updates[].amount_cents, updates[].monthly_amount_cents, dry_run.param_no_description
Minor
String arguments with no constraint or example: app_id, updates[].tier.loose_string_param
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

create_app_kit

40 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 4 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: app_name, answers, answers.plan_catalog, answers.plan_catalog[].tier, answers.plan_catalog[].name, answers.plan_catalog[].monthly_price, answers.plan_catalog[].yearly_price, answers.plan_catalog[].payment_type, answers.plan_catalog[].amount, answers.plan_catalog[].trial_days, answers.success_url, answers.cancel_url, answers.trial_days, answers.confirm_overwrite, answers.push_mode.param_no_description
Minor
String arguments with no constraint or example: app_name, answers.plan_catalog[].tier, answers.plan_catalog[].name, answers.success_url, answers.cancel_url.loose_string_param
Minor
The meaning of the boolean argument answers.confirm_overwrite is unclear.vague_boolean
Minor
The meaning of the boolean argument answers.push_mode is unclear.vague_boolean

list_plans

40 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 3 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: app_id, include_stripe_ids.param_no_description
Minor
String arguments with no constraint or example: app_id.loose_string_param
Minor
The meaning of the boolean argument include_stripe_ids is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: app_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

delete_coupon

45 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 3 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: app_id, code, confirm_used, dry_run.param_no_description
Minor
String arguments with no constraint or example: app_id, code.loose_string_param
Minor
The meaning of the boolean argument confirm_used is unclear.vague_boolean
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

invite_to_coupon

47 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 3 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: app_id, code, emails, source, enforce_invite_only, dry_run.param_no_description
Minor
String arguments with no constraint or example: app_id, code, source.loose_string_param
Minor
The meaning of the boolean argument enforce_invite_only is unclear.vague_boolean
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean

revenue_summary

49 / 100Cloudy

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

Major
Arguments without a description: app_id, include_samples.param_no_description
Minor
String arguments with no constraint or example: app_id.loose_string_param
Minor
No `required` list, so every argument is optional.no_required
Minor
The meaning of the boolean argument include_samples is unclear.vague_boolean

archive_plan

50 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 3 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: app_id, tier, dry_run.param_no_description
Minor
String arguments with no constraint or example: app_id, tier.loose_string_param
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: app_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

create_coupon

50 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 3 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: app_id, code, discount_percent, description, expires_at, max_uses, applies_to_tiers, listed, confirm_high_discount, dry_run.param_no_description
Minor
String arguments with no constraint or example: app_id, code, description, expires_at.loose_string_param
Minor
The meaning of the boolean argument listed is unclear.vague_boolean
Minor
The meaning of the boolean argument confirm_high_discount is unclear.vague_boolean
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

list_coupon_invites

50 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 3 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Major
Arguments without a description: app_id, code.param_no_description
Minor
String arguments with no constraint or example: app_id, code.loose_string_param

bulk_create_coupon

52 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 3 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: app_ids, code, discount_percent, description, expires_at, max_uses, applies_to_tiers, listed, confirm_high_discount, dry_run.param_no_description
Minor
String arguments with no constraint or example: code, description, expires_at.loose_string_param
Minor
The meaning of the boolean argument listed is unclear.vague_boolean
Minor
The meaning of the boolean argument confirm_high_discount is unclear.vague_boolean
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean

list_apps

52 / 100Cloudy

Purpose: 20 / 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

revoke_coupon_invite

52 / 100Cloudy

Purpose: 17 / 20
When to use: 20 / 20
Arguments: 3 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: app_id, code, email, reason, dry_run.param_no_description
Minor
String arguments with no constraint or example: app_id, code, email, reason.loose_string_param
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

update_plan_limits

52 / 100Cloudy

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

Major
Arguments without a description: app_id, updates, mode, dry_run.param_no_description
Minor
String arguments with no constraint or example: app_id.loose_string_param
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

setup_pricing_page

53 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 4 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Major
Arguments without a description: app_id, stage, dry_run, tier, domain, price_suggestions, price_suggestions[].tier, price_suggestions[].label, price_suggestions[].amount_cents, price_suggestions[].billing, price_suggestions[].recommended, price_suggestions[].rationale, discount_percent, coupon_code, faq_drafts, faq_drafts[].question, faq_drafts[].answer.param_no_description
Minor
String arguments with no constraint or example: app_id, tier, domain, price_suggestions[].tier, price_suggestions[].label, price_suggestions[].rationale, coupon_code, faq_drafts[].question, faq_drafts[].answer.loose_string_param
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean
Minor
The meaning of the boolean argument price_suggestions[].recommended is unclear.vague_boolean

update_plan_meta

55 / 100Cloudy

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 3 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: app_id, tier, name, is_elite, recommended, dry_run.param_no_description
Minor
String arguments with no constraint or example: app_id, tier, name.loose_string_param
Minor
The meaning of the boolean argument is_elite is unclear.vague_boolean
Minor
The meaning of the boolean argument recommended is unclear.vague_boolean
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

set_coupon_listed

57 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 3 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: app_id, code, listed, listed_from, dry_run.param_no_description
Minor
String arguments with no constraint or example: app_id, code, listed_from.loose_string_param
Minor
The meaning of the boolean argument listed is unclear.vague_boolean
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean

bulk_delete_coupon

62 / 100Cloudy

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 3 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: app_ids, code, confirm_used, dry_run.param_no_description
Minor
String arguments with no constraint or example: code.loose_string_param
Minor
The meaning of the boolean argument confirm_used is unclear.vague_boolean
Minor
The meaning of the boolean argument dry_run is unclear.vague_boolean

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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