Plan review · Caskade

Paused · pending human reviewplan plan_stripe_webhooks_0194thread thread_7f2c88initial · r1submitted 4/17/2026, 2:22:11 PM

Goal

Summary

Blast radius

The enforceable contract for execution. Anything outside this set triggers a scope-drift hard gate.

7 files2 commands1 external

Read files

Read-only touch — allowed even inside a narrower write radius.

Write files

Mutation is allowed here and only here. Anything else = scope drift.

Commands

Shell / test commands the execution harness is permitted to invoke.

External systems

Outside-the-repo side effects. Changes here deserve extra scrutiny.

Enforcement

Hard-stop boundary — not advisory. Any execution event outside the approved scope is immediately blocked. There is no override path.

Approved scope

Write files (4)

src/lib/stripe.ts
src/lib/billing/events.ts
src/app/api/webhooks/stripe/route.ts
tests/billing/stripe-webhook.test.ts

Commands (2)

bun test tests/billing/stripe-webhook.test.ts
bun run typecheck

External systems (1)

stripe

Execution events

✓AllowedfileWrite

src/lib/stripe.ts

✓AllowedfileWrite

src/lib/billing/events.ts

✗HARD STOPwriteOutsideApprovedFiles

src/lib/auth/session.ts

File write to "src/lib/auth/session.ts" is outside the approved write set. Approved files: src/lib/stripe.ts, src/lib/billing/events.ts, src/app/api/webhooks/stripe/route.ts, tests/billing/stripe-webhook.test.ts.

✗HARD STOPwriteOutsideApprovedFiles

src/app/api/payments/route.ts

File write to "src/app/api/payments/route.ts" is outside the approved write set. Approved files: src/lib/stripe.ts, src/lib/billing/events.ts, src/app/api/webhooks/stripe/route.ts, tests/billing/stripe-webhook.test.ts.

✓Allowedcommand

bun test tests/billing/stripe-webhook.test.ts

✗HARD STOPcommandOutsideApprovedCommands

bun run db:migrate

Command "bun run db:migrate" is not in the approved command list. Approved commands: bun test tests/billing/stripe-webhook.test.ts, bun run typecheck.

✓AllowedexternalSystem

Stripe

✗HARD STOPexternalSystemOutsideApproved

sendgrid

External system "sendgrid" is not in the approved systems list. Approved systems: stripe.

Risks

Ways this plan could damage the repo or product if the agent runs without pushback.

•

Assumptions

Claims the agent depends on. If one of these is false, the plan needs a fresh pass.

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Acceptance criteria

The human-verifiable bar for calling this plan done.

•

Open questions

Known unknowns the agent flagged and wants feedback on.

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Tasks

Ordered DAG the agent will execute once approved. Dependencies are explicit — editing one task may invalidate downstream tasks (surfaced via the consistency cascade).

3 tasks

task 01·task_verify_signature

Summary

depends onno dependencies

Read files

Write files

Commands

None

Acceptance criteria

•

Notes

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task 02·task_persist_invoice_paid

Summary

depends on#1 · task_verify_signature

Read files

Write files

Commands

None

Acceptance criteria

•

task 03·task_integration_tests

Summary

depends on#1 · task_verify_signature#2 · task_persist_invoice_paid

Read files

None

Write files

Commands

Acceptance criteria

•