* fix(rich-markdown-editor): fix mention chip losing ambient color (same class as #5573) Auditing the whole "an element's own explicit color always wins over an inherited one" bug class (previously fixed for strong/em/code/del/s vs. links and h6 in #5573) turned up one more instance: the @-mention chip's label hardcoded text-[var(--text-primary)], which is redundant with the prose default anyway (matching the strong/em/code precedent) and silently overrides any ambient color a mention's container legitimately sets — a link's blue, or h6's dimmer --text-secondary — since a mention is inline content that can appear inside either (e.g. "###### see @some-file"). Removed the hardcoded color entirely so the label inherits correctly in every context, same fix as strong/em/code. The icon's own monochrome --text-icon fallback is untouched (icons intentionally don't follow ambient text color). New test renders MentionChipView directly and asserts the wrapper carries no explicit text-color utility class; verified it fails against the pre-fix className. * fix(rich-markdown-editor): broaden mention-chip color-regression guard beyond the exact old class Greptile: the test only matched the literal old text-[var(--text-primary)] string — a future edit swapping it for e.g. text-[var(--text-secondary)] or text-blue-500 would still silently reintroduce the ambient-color bug and pass this test. Now checks every non-descendant-scoped (excludes the [&>svg]: icon rule) text-* utility on the wrapper against a color-shaped pattern (arbitrary value, color-shade pairs, or a named color keyword), so any bare text color slipping back in fails. Verified against a text-blue-500 regression. * fix(rich-markdown-editor): close the semantic-Tailwind-color gap in the mention-chip test Greptile: the color-shaped regex still missed semantic theme tokens (text-primary, text-muted-foreground, text-chart-1, etc.) since they don't match a shade-suffix or bracket pattern. Rather than keep enumerating Tailwind's color-naming schemes, flag ANY unscoped text-* utility on the wrapper — none is legitimate on this chip today, so this can only be a color slipping back in. Verified against text-primary/text-muted-foreground/text-chart-1 regressions. * fix(rich-markdown-editor): catch Tailwind's self-targeting [&]:text-* variant too Greptile: the previous filter excluded ANY class starting with `[&`, which also dropped Tailwind's self-targeting arbitrary variant (`[&]:text-primary` applies to the element itself, same as a bare `text-primary`) — only descendant variants like `[&>svg]:text-*` should be excluded. Now explicitly catches both the bare and `[&]:` forms. Verified against a `[&]:text-primary` regression.
A workspace to build, deploy and manage AI agents and workflows.
Quickstart
Cloud-hosted: sim.ai
Self-hosted
npx simstudio
Docker must be installed and running. Use -p, --port <port> to run Sim on a different port, or --no-pull to skip pulling the latest Docker images.
Capabilities
- Connect 1,000+ integrations and every major LLM
- Add Slack, Notion, HubSpot, Salesforce, databases, and more
- Build agents visually, conversationally, or with code
- Ingest files, knowledge bases, and structured table data
- Monitor runs, logs, schedules, and workflow activity
One workspace, every surface
Chat and workflows are just the start — tables, files, knowledge, and scheduled tasks all live in the same workspace.
Tables — a database, built in |
Files — one store for your team and every agent |
Knowledge — your agents' memory |
Scheduled tasks — runs on your schedule |
Self-hosting
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.
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).
Chat API Keys
Chat is a Sim-managed service. To use Chat on a self-hosted instance:
- Go to https://sim.ai → Settings → Chat keys and generate a Chat 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
Next.js · Bun · PostgreSQL · Drizzle · Better Auth · Tailwind — and the rest of the stack
- Framework: Next.js (App Router)
- Runtime: Bun
- Database: PostgreSQL with Drizzle ORM
- Authentication: Better Auth
- Schema Validation: Zod
- 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.





