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billing-automation

Build automated billing systems for recurring payments, invoicing, subscription lifecycle, and dunning management. Use when implementing subscription billing, automating invoicing, or managing recurring payment systems.

54

Quality

61%

Does it follow best practices?

Impact

No eval scenarios have been run

SecuritybySnyk

Advisory

Suggest reviewing before use

Optimize this skill with Tessl

npx tessl skill review --optimize ./.agent/skills/billing-automation/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

22%

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

This skill is essentially a table of contents with no substantive content. It defers all concrete guidance to referenced files that aren't provided in the bundle, leaving the SKILL.md itself with only vague, abstract bullet points. For a complex domain like billing automation involving financial operations, the lack of any concrete examples, executable code, validation steps, or specific patterns is a significant weakness.

Suggestions

Add at least one concrete, executable code example in the SKILL.md itself — e.g., a subscription state machine model, an invoice generation snippet, or a dunning retry schedule configuration.

Include explicit workflow steps with validation checkpoints for critical paths like 'charging a customer' or 'handling a plan change with proration' — these involve financial operations and need feedback loops.

Replace the vague instruction bullets with specific, actionable guidance — e.g., instead of 'Define plans, pricing, billing intervals', provide a concrete plan schema or data model that Claude can use directly.

Provide the referenced bundle files (implementation-playbook.md) or inline the most critical patterns so the skill is useful even without the sub-resources.

DimensionReasoningScore

Conciseness

The skill is relatively brief but includes some unnecessary sections like 'Use this skill when' and 'Do not use this skill when' lists that are somewhat obvious and don't add much value for Claude. The 'Instructions' section is high-level but not padded with explanations of known concepts.

2 / 3

Actionability

The instructions are entirely abstract and vague — 'Define plans, pricing, billing intervals' and 'Implement invoicing, payments, retries' provide no concrete code, commands, schemas, or executable examples. Everything describes rather than instructs, with all concrete guidance deferred to a referenced playbook that isn't provided.

1 / 3

Workflow Clarity

The instructions list high-level steps but lack any clear sequencing, validation checkpoints, or feedback loops. For a complex domain involving payments, tax compliance, and dunning — all of which involve destructive/financial operations — there are no verification steps, error recovery patterns, or explicit ordering beyond a loose bullet list.

1 / 3

Progressive Disclosure

The skill references `resources/implementation-playbook.md` and a sub-skill, which is appropriate progressive disclosure structure. However, no bundle files are provided to verify these references exist, and the SKILL.md itself contains almost no substantive content — it's essentially an empty shell pointing elsewhere, making the overview too thin to be useful on its own.

2 / 3

Total

6

/

12

Passed

Description

100%

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

This is a well-crafted skill description that clearly communicates specific capabilities (billing, invoicing, subscription lifecycle, dunning) and provides explicit trigger guidance via a 'Use when...' clause. The domain-specific terminology is both natural and distinctive, making it easy for Claude to select this skill appropriately without confusion with adjacent skills.

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions: 'automated billing systems', 'recurring payments', 'invoicing', 'subscription lifecycle', and 'dunning management'. These are distinct, concrete capabilities.

3 / 3

Completeness

Clearly answers both what ('Build automated billing systems for recurring payments, invoicing, subscription lifecycle, and dunning management') and when ('Use when implementing subscription billing, automating invoicing, or managing recurring payment systems') with explicit trigger guidance.

3 / 3

Trigger Term Quality

Includes strong natural keywords users would say: 'subscription billing', 'invoicing', 'recurring payments', 'dunning management', 'billing systems'. These are terms developers naturally use when building payment infrastructure.

3 / 3

Distinctiveness Conflict Risk

The description carves out a clear niche around billing/subscription/dunning management. Terms like 'dunning management', 'subscription lifecycle', and 'recurring payments' are highly specific and unlikely to conflict with general payment or e-commerce skills.

3 / 3

Total

12

/

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
Dokhacgiakhoa/antigravity-ide
Reviewed

Table of Contents

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