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billing-automation

Master automated billing systems including recurring billing, invoice generation, dunning management, proration, and tax calculation.

47

Quality

50%

Does it follow best practices?

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Adds up to 20 points to the overall score

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SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./skills/billing-automation/SKILL.md

The canonical home for this skill is billing-automation in rmyndharis/antigravity-skills

SKILL.md
Quality
Evals
Security

Quality

Content

57%Scale 1-3

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This skill is well-structured and concise, with appropriate progressive disclosure to external resources. However, it critically lacks actionability - the instructions are entirely abstract with no concrete code examples, API patterns, data schemas, or executable guidance. For a complex domain like billing automation involving financial transactions, the absence of specific implementation details and validation checkpoints significantly limits its usefulness.

Suggestions

Add concrete code examples for at least one core workflow (e.g., subscription creation, invoice generation, or dunning retry logic) with actual data structures and API calls

Include a specific example of proration calculation with input/output values to make the guidance executable

Add explicit validation checkpoints for financial operations, such as 'Verify invoice totals match line items before sending' or 'Confirm sandbox mode before processing test payments'

Provide a sample data schema or JSON structure for plans, subscriptions, or invoices to make the 'Define plans, pricing' instruction actionable

DimensionReasoningScore

Conciseness

The content is lean and efficient, avoiding unnecessary explanations of what billing systems are. Every section serves a purpose and assumes Claude understands the domain concepts.

3 / 3

Actionability

The instructions are entirely abstract and vague - 'Define plans, pricing, billing intervals' and 'Implement invoicing, payments' provide no concrete code, commands, schemas, or executable examples. This describes rather than instructs.

1 / 3

Workflow Clarity

Steps are listed in a logical sequence (define -> map -> implement -> model -> validate), but there are no explicit validation checkpoints, error recovery paths, or feedback loops for what are inherently risky financial operations.

2 / 3

Progressive Disclosure

Clear structure with appropriate sections, and detailed content is properly delegated to a single external resource file with a clear signal for when to access it.

3 / 3

Total

9

/

12

Passed

Description

42%Scale 1-3

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description effectively lists specific billing capabilities but fails to provide explicit trigger guidance for when Claude should use this skill. The technical terms are appropriate but could benefit from more natural user language variations. The missing 'Use when...' clause significantly weakens its utility for skill selection.

Suggestions

Add a 'Use when...' clause with explicit triggers like 'Use when the user asks about subscription billing, payment schedules, failed payment handling, or generating invoices'

Include natural user language variations such as 'subscriptions', 'charge customers', 'payment failures', 'billing cycles', or 'monthly charges'

Clarify the boundary with related skills by specifying what this skill handles vs. general payment processing or accounting

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions: 'recurring billing, invoice generation, dunning management, proration, and tax calculation' - these are distinct, actionable capabilities.

3 / 3

Completeness

Describes what the skill does but completely lacks a 'Use when...' clause or any explicit trigger guidance for when Claude should select this skill.

1 / 3

Trigger Term Quality

Contains relevant domain keywords like 'billing', 'invoice', 'dunning', 'proration', 'tax calculation', but missing common user variations like 'subscriptions', 'payment failures', 'billing cycles', or 'charge customers'.

2 / 3

Distinctiveness Conflict Risk

The billing domain is fairly specific, but 'automated billing systems' could overlap with payment processing, accounting, or subscription management skills without clearer boundaries.

2 / 3

Total

8

/

12

Passed

Validation

90%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation10 / 11 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

10

/

11

Passed

Repository
administrakt0r/AI-Agents-Safe-Coding-Skills
Reviewed

Table of Contents

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