Lunium — Brazilian PIX and stablecoin payments: tool descriptions scored com.luniumpay/pix-brazilian-payments

tools/list taken: 2026-11-02 (UTC)
From: Official MCP Registry
Connected to: https://api.luniumpay.com/mcp
Homepage: docs.luniumpay.com/skill
Repository: github.com/LuniumPay/lunium-agent-skills
Scoring rules: v2
Removal: support@forecall.dev

Scores, issues and names only

This page shows how Lunium — Brazilian PIX and stablecoin payments (com.luniumpay/pix-brazilian-payments)'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/com.luniumpay/pix-brazilian-payments

Average score: 70.0 / 100Clear
Tools: 20
Near-identical descriptions: 0

Across the server

Minor
The server's instructions are 5727 characters. Claude Code reads only the first 2,048 by default (Codex 0.154.0 reads them whole). Put what the server is for first.instructions_long

Tools

lunium_plan_integration

41 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 10 / 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: flow, stack.param_no_description

lunium_get_sandbox_demo

42 / 100Cloudy

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

Major
Arguments without a description: demo_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: demo_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lunium_list_settlement_options

44 / 100Cloudy

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

Major
Arguments without a description: direction, asset, network, offset, limit.param_no_description
Minor
No `required` list, so every argument is optional.no_required
Minor
Says nothing about what it returns.no_return_info

lunium_check_network_health

54 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

lunium_get_usdt_pix_payment

62 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

lunium_get_usdt_wallet

62 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

lunium_list_usdt_deposits

67 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

lunium_start_sandbox_demo

67 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 0 / 10

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

lunium_quote_pix_with_usdt

71 / 100Clear

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 22 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 10 / 10

Minor
No `required` list, so every argument is optional.no_required

lunium_check_payer_limit

74 / 100Clear

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

No issues.

lunium_create_pix_charge

74 / 100Clear

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

No issues.

lunium_get_pix_charge

74 / 100Clear

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

No issues.

lunium_contact

76 / 100Clear

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

No issues.

lunium_confirm_crypto_sale

79 / 100Clear

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

Minor
The description is long (442 words). It helps selection but costs steps and tokens.too_long
Minor
Required identifiers whose description does not say where the value comes from: cashout_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

lunium_request_usdt_deposit

79 / 100Clear

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

No issues.

lunium_get_crypto_sale

84 / 100Clear

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

No issues.

lunium_pay_pix_with_usdt

84 / 100Clear

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

No issues.

lunium_quote_crypto_sale

84 / 100Clear

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

Minor
The description is long (482 words). It helps selection but costs steps and tokens.too_long

lunium_create_sandbox_key

89 / 100Clear

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

No issues.

lunium_verify_pix_payment

92 / 100Clear

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

No issues.

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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