Waleed
0583e2085f
* improvement(emcn): let every primitive inherit the document font weight #6241 flattened the type scale by deleting the tailwind `fontWeight` override that remapped `font-medium` to 440/480. Nothing was restyled, but the utility's meaning changed: every one of ~505 call sites written when `font-medium` sat ~10 units above body snapped to a stock 500 against a body that also dropped 430 -> 400. The tab strip and table header Emir reported are two symptoms. The same PR added the "Font Weight" section to sim-styling.md declaring the end state (400 default, weight class only to step up) without migrating the codebase to it, so the rule and its violations shipped together and no gate could flag it. Removes the hardcoded weight from the ~20 pre-chip emcn primitives so they inherit 400, matching the chip family that was already correct. Deletes the three `font-normal` overrides that existed only to undo those defaults (`TabStrip`, `ChipCombobox`, `ChipModalField`) — their TSDoc said as much. `<th>` needed care in the other direction: Preflight resets h1-h6 but not `th`, so a header keeps the UA bold 700 and `font-medium` was holding it *down*. Deleting it made headers heavier. Rather than neutralize per call site — the codebase had already accumulated 12 such workarounds — globals.css completes Preflight with `th { font-weight: inherit }`, and the 8 now-dead `font-normal` workarounds come out. The rule keeps no element-level exceptions. Two width-measurement mirrors had to move with the text they measure: table-grid's auto-fit canvas and tag-input's hidden sizing span. Left stale, both would mis-measure. Also: drops an inline `font-weight:500` from the header drag ghost, normalizes `text-[13px]`/`text-[11px]` to `text-small`/`text-xs`, aligns the landing table previews that clone the product header, documents AvatarFallback's deliberate step-up, and corrects the stale AGENTS.md line claiming Button owns a weight. Verified: typecheck 0, lint clean, full vitest run identical to origin/staging across three runs (158 failed suites / 1 failed test / 16350 passing — all pre-existing: a PostCSS env error and a missing `rg` binary). * fix(tables): align the workflow-group drag ghost with the label it previews Cursor Bugbot caught the sibling of the ghost fixed in column-header-menu: this one kept an inline `font-weight:500` after the band label dropped to the inherited 400, so the drag preview no longer matched the text it represents — the same mirror drift this PR fixes for the width-measurement spans. It was drifted on size too: hardcoded `font-size:13px` against a label that is `text-xs` (11px), so it never matched. Both now come from the token the label uses, which also clears the inline fontWeight the styling rule bans. * fix(toolbar): stop the block drag preview hardcoding a weight its label does not use Third instance of the same mirror drift, found by sweeping rather than waiting for it to be reported. The toolbar item label renders at the inherited 400 (its container is `chipVariants`, which is weight-free), but the drag preview hardcoded `font-weight: 500` — so the preview never matched the item it previews, before or after this PR. Drops the weight only. The 16px is left alone: a drag preview reading larger than its source is a deliberate affordance, not a mismatch. Not fixed here, deliberately: the `font-weight: 500` in code-editor.tsx's highlight layer. That HTML is rendered in registration with a transparent textarea, so weight affects glyph advance widths and the caret alignment — it needs live in-editor verification, unlike a detached drag ghost. Its two placeholder branches already disagree on weight, so it wants its own change. * revert(canvas): drop the workflow-editor panel changes from this PR The canvas panel is under active modification elsewhere, so this PR stays out of it. Reverts the toolbar search input, the sub-block table cell and its overlay mirror, the messages-input textarea and its mirror, and the block drag preview — all back to staging verbatim. Cursor Bugbot was right about that last one and I was wrong: the preview mirrors the drag DESTINATION (its TSDoc says "looks like a workflow block", and 250px/16px are block-card dimensions), not the toolbar chip I had compared it against. workflow-block-view renders the title `font-medium text-md`, so its 500 was correct. Moot now that the file is reverted, but worth recording so the next sweep does not repeat the mistake. The globals `th` rule still covers the sub-block table header without a call-site class; the explicit font-medium there simply wins over it, exactly as staging renders today.
A workspace to build, deploy and manage AI agents and workflows.
Quickstart
Cloud-hosted: sim.ai
Self-hosted
git clone https://github.com/simstudioai/sim.git && cd sim
bun install
bun run setup
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, and knowledge all live in the same workspace.
Tables — a database, built in |
Files — one store for your team and every agent |
Knowledge — your agents' memory |
Self-hosting
bun run setup is an interactive wizard: it provisions the database, generates secrets, writes your .env files, connects a Chat API key, and starts Sim the way you choose:
- Local dev — run from source to contribute or hack on Sim
- Docker Compose — a self-contained instance for testing self-hosting
- Kubernetes (Helm) — deploy to a local cluster
When it finishes, open http://localhost:3000.
Reconfigure an optional capability without rerunning the full wizard:
bun run setup status
bun run setup email
bun run setup storage
bun run setup sandbox
bun run setup jobs
bun run setup cache
bun run setup knowledge
bun run setup llm
bun run setup integration slack
bun run setup status detects the effective local-dev, Docker Compose, or current-context
Helm configuration and reports configured, missing, or invalid capabilities and OAuth
integrations without printing credential values. This is separate from bun run sim status,
which reports whether installed services are running and healthy.
Manage your install with bun run sim:
bun run sim start | stop | restart # bring your install up / down / cycle
bun run sim status # what's installed and healthy
bun run sim logs # follow logs
bun run sim doctor # diagnose configuration problems
bun run sim down # remove containers (data kept)
bun run sim reset # archive .env and wipe managed data
sim detects how you're running (Docker Compose, local dev, or Kubernetes) and acts accordingly.
Prefer a bare sim? Run bun link once — but note sim lands in ~/.bun/bin, which Homebrew's bun doesn't add to your PATH, so you may need export PATH="$HOME/.bun/bin:$PATH" in your shell profile.
Sim also supports local models via Ollama and vLLM. See the self-hosting docs for details.
Chat API Keys
Chat is a Sim-managed service. bun run setup connects a Chat API key for you — sign in when it opens your browser and the key is stored automatically. To view, create, or revoke keys later, go to sim.ai/selfhost/settings/chat-keys.
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.
