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.

1.64x

Quality

63%

Does it follow best practices?

Impact

92%

1.64x

Average score across 3 eval scenarios

Securityby

Advisory

Suggest reviewing before use

Optimize this skill with Tessl

npx tessl skill review --optimize ./plugins/payment-processing/skills/billing-automation/SKILL.md

Evaluation results

100%

64%

Failed Payment Recovery System

Dunning management workflow

Criteria

Without context

With context

First retry timing

100%

Second retry timing

100%

Third retry timing

100%

First failure email

100%

Reminder email

100%

Final warning email

100%

Cancel after exhaustion

100%

Cancellation email

100%

Recovery email

100%

Stripe cents conversion

100%

Stripe customer ID

100%

Active on recovery

100%

85%

25%

Mid-Cycle Plan Change Billing

Proration calculation

Criteria

Without context

With context

Unused credit formula

100%

New plan charge formula

100%

Net proration formula

100%

old_plan_credit field

100%

new_plan_charge field

33%

100%

net_proration field

33%

100%

days_used field

100%

days_remaining field

50%

100%

No seat removal credit

100%

Seat addition charged

100%

Correct numeric output

91%

17%

International Invoicing with Tax Compliance

Tax calculation and invoice generation

Criteria

Without context

With context

US_CA tax rate

100%

US_NY tax rate

100%

UK tax rate

100%

Germany tax rate

100%

Australia tax rate

100%

US tax type label

42%

100%

EU tax type label

100%

AU tax type label

100%

VIES VAT validation

Line item structure

44%

100%

Invoice finalize logic

55%

100%

HTML Bill To section

55%

100%

HTML table columns

100%

Repository: wshobson/agents
Commit: 91fe43e

Evaluated: 27 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Failed Payment Recovery System Mid-Cycle Plan Change Billing International Invoicing with Tax Compliance

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