paddle-subscription-update

Change a Paddle subscription's plan from a Next.js Server Action — auth, ownership check, `prorationBillingMode`, items-array replace semantics, preview-before-commit, and `on_payment_failure` handling.

1.35x

Quality

80%

Does it follow best practices?

Impact

96%

1.35x

Average score across 3 eval scenarios

Securityby

Advisory

Suggest reviewing before use

Optimize this skill with Tessl

npx tessl skill review --optimize ./skills/subscription-update/SKILL.md

Evaluation results

100%

Billing Plan Upgrade Action

Self-serve plan upgrade Server Action

Criteria

Without context

With context

Auth check first

100%

Ownership check present

100%

Email-bridge ownership pattern

100%

Correct proration mode for upgrade

100%

do_not_bill not used

100%

Items as replacement

100%

No fetch-then-concat

100%

revalidatePath called

100%

Slim DTO returned

100%

Notes justify proration choice

100%

92%

Annual Plan Switch with Charge Preview

Term-switch preview with addon interval rule

Criteria

Without context

With context

previewUpdate called

100%

Preview used as source of truth

100%

Preview response fields surfaced

100%

Correct proration for term upgrade

100%

Add-on prices updated with base plan

100%

No mixed billing intervals

100%

Same body for preview and commit

100%

No manual proration math

100%

notes.md explains interval constraint

70%

100%

revalidatePath in commit action

96%

62%

Admin Subscription Management Panel

Admin CS upgrade with payment failure mode

Criteria

Without context

With context

onPaymentFailure: apply_change in upgrade

100%

camelCase SDK parameter

100%

Upgrade uses immediate proration

100%

Downgrade uses next-period proration

33%

100%

Auth check in both actions

100%

Ownership/customer verification

62%

50%

Slim DTO returned

100%

notes.md: apply_change rationale

20%

100%

notes.md: downgrade proration rationale

70%

100%

do_not_bill not used

100%

Repository: PaddleHQ/paddle-agent-skills
Commit: 62438cd

Evaluated: about 18 hours ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Billing Plan Upgrade Action Annual Plan Switch with Charge Preview Admin Subscription Management Panel

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