* fix(billing): route scope by subscription referenceId, sync plan from Stripe, transfer storage on org join
Route every billing decision (usage limits, credits, storage, rate
limit, threshold billing, webhooks, UI permissions) through the
subscription's `referenceId` instead of plan-name heuristics. Fixes
the production state where a `pro_6000` subscription attached to an
organization was treated as personal Pro by display/edit code while
execution correctly enforced the org cap.
Scope
- Add `isOrgScopedSubscription(sub, userId)` (pure) and
`isSubscriptionOrgScoped(sub)` (async DB-backed) helpers. One is
used wherever a user perspective is available; the other in webhook
handlers that only have a subscription row.
- Replace plan-name scope checks in ~20 files: usage/limit readers,
credits balance + purchase, threshold billing, storage limits +
tracking, rate limiter, invoice + subscription webhooks, seat
management, membership join/leave, `switch-plan` admin gate,
admin credits/billing routes, copilot 402 handler, UI subscription
settings + permissions + sidebar indicator, React Query types.
Plan sync
- Add `syncSubscriptionPlan(subscriptionId, currentPlan, planFromStripe)`
called from `onSubscriptionComplete` and `onSubscriptionUpdate` so
the DB `plan` column heals on every Stripe event. Pro->Team upgrades
previously updated price, seats, and referenceId but left `plan`
stale — this is what produced the `pro_6000`-on-org row.
Priority + grace period
- `getHighestPrioritySubscription` now prefers org over personal
within each tier (Enterprise > Team > Pro, org > personal at each).
A user with a `cancelAtPeriodEnd` personal Pro who joins a paid org
routes pooled resources to the org through the grace window.
- `calculateSubscriptionOverage` personal-Pro branch reads user_stats
directly (bypassing priority) and bills only `proPeriodCostSnapshot`
when the user joined a paid org mid-cycle, so post-join org usage
isn't double-charged on the personal Pro's final invoice.
`resetUsageForSubscription` mirrors this: preserves
`currentPeriodCost` / `currentPeriodCopilotCost` when
`proPeriodCostSnapshot > 0` so the org's next cycle-close captures
post-join usage correctly.
Uniform base-price formula
- `basePrice × (seats ?? 1)` everywhere: `getOrgUsageLimit`,
`updateOrganizationUsageLimit`, `setUsageLimitForCredits`,
`calculateSubscriptionOverage`, threshold billing,
`syncSubscriptionUsageLimits`, `getOrganizationBillingData`.
Admin dashboard math now agrees with enforcement math.
Storage transfer on join
- Invitation-accept flow moves `user_stats.storageUsedBytes` into
`organization.storageUsedBytes` inside the same transaction when
the org is paid.
- `syncSubscriptionUsageLimits` runs a bulk-backfill version so
members who joined before this fix, or orgs that upgraded from
free to paid after members joined, get pulled into the org pool
on the next subscription event. Idempotent.
UX polish
- Copilot 402 handler differentiates personal-scoped ("increase your
usage limit") from org-scoped ("ask an owner or admin to raise the
limit") while keeping the `increase_limit` action code the parser
already understands.
- Duplicate-subscription error on team upgrade names the existing
plan via `getDisplayPlanName`.
- Invitation-accept invalidates subscription + organization React
Query caches before redirect so settings doesn't flash the user's
pre-join personal view.
Dead code removal
- Remove unused `calculateUserOverage`, and the following fields on
`SubscriptionBillingData` / `getSimplifiedBillingSummary` that no
consumer in the monorepo read: `basePrice`, `overageAmount`,
`totalProjected`, `tierCredits`, `basePriceCredits`,
`currentUsageCredits`, `overageAmountCredits`, `totalProjectedCredits`,
`usageLimitCredits`, `currentCredits`, `limitCredits`,
`lastPeriodCostCredits`, `lastPeriodCopilotCostCredits`,
`copilotCostCredits`, and the `organizationData` subobject. Add
`metadata: unknown` to match what the server returns.
Notes for the triggering customer
- The `pro_6000`-on-org row self-heals on the next Stripe event via
`syncSubscriptionPlan`. For the one known customer, a direct
UPDATE is sufficient:
`UPDATE subscription SET plan='team_6000' WHERE id='aq2...' AND plan='pro_6000'`.
Made-with: Cursor
* fix tests
* address more comments
* progress
* harden further
* outbox service
* address comments
* address comment on check
* simplify
* cleanup code
* minor improvement
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Quickstart
Cloud-hosted: sim.ai
Self-hosted: NPM Package
npx simstudio
Note
Docker must be installed and running on your machine.
Options
| Flag | Description |
|---|---|
-p, --port <port> |
Port to run Sim on (default 3000) |
--no-pull |
Skip pulling latest Docker images |
Self-hosted: Docker Compose
git clone https://github.com/simstudioai/sim.git && cd sim
docker compose -f docker-compose.prod.yml up -d
Sim also supports local models via Ollama and vLLM — see the Docker self-hosting docs for setup details.
Self-hosted: Manual Setup
Requirements: Bun, Node.js v20+, PostgreSQL 12+ with pgvector
- Clone and install:
git clone https://github.com/simstudioai/sim.git
cd sim
bun install
bun run prepare # Set up pre-commit hooks
- Set up PostgreSQL with pgvector:
docker run --name simstudio-db -e POSTGRES_PASSWORD=your_password -e POSTGRES_DB=simstudio -p 5432:5432 -d pgvector/pgvector:pg17
Or install manually via the pgvector guide.
- Configure environment:
cp apps/sim/.env.example apps/sim/.env
# Create your secrets
perl -i -pe "s/your_encryption_key/$(openssl rand -hex 32)/" apps/sim/.env
perl -i -pe "s/your_internal_api_secret/$(openssl rand -hex 32)/" apps/sim/.env
perl -i -pe "s/your_api_encryption_key/$(openssl rand -hex 32)/" apps/sim/.env
# DB configs for migration
cp packages/db/.env.example packages/db/.env
# Edit both .env files to set DATABASE_URL="postgresql://postgres:your_password@localhost:5432/simstudio"
- Run migrations:
cd packages/db && bun run db:migrate
- Start development servers:
bun run dev:full # Starts Next.js app and realtime socket server
Or run separately: bun run dev (Next.js) and cd apps/sim && bun run dev:sockets (realtime).
Copilot API Keys
Copilot is a Sim-managed service. To use Copilot on a self-hosted instance:
- Go to https://sim.ai → Settings → Copilot and generate a Copilot API key
- Set
COPILOT_API_KEYenvironment variable in your self-hosted apps/sim/.env file to that value
Environment Variables
See the environment variables reference for the full list, or apps/sim/.env.example for defaults.
Tech Stack
- Framework: Next.js (App Router)
- Runtime: Bun
- Database: PostgreSQL with Drizzle ORM
- Authentication: Better Auth
- UI: Shadcn, Tailwind CSS
- Streaming Markdown: Streamdown
- State Management: Zustand, TanStack Query
- Flow Editor: ReactFlow
- Docs: Fumadocs
- Monorepo: Turborepo
- Realtime: Socket.io
- Background Jobs: Trigger.dev
- Remote Code Execution: E2B
- Isolated Code Execution: isolated-vm
Contributing
We welcome contributions! Please see our Contributing Guide for details.
License
This project is licensed under the Apache License 2.0 - see the LICENSE file for details.
Made with ❤️ by the Sim Team


