* fix(forks): stop sync demanding config the source never had
Fork sync manufactured required re-pick rows the source never asked for, disabling
Sync and suppressing the "Fully mapped" badge. Two distinct causes landed on the
same line in `collectForkDependentReconfigs`.
Cause A - a block-level `required` applied to a nested tool param. The collector
runs one helper over both a block's own subblocks and the params of each tool in a
`tool-input`, reading the raw block config for the nested pass. A Jira Get Issue
tool inside an Agent block therefore inherited Jira's `issueKey` required-condition
even though the tool param is `visibility: 'user-or-llm'` - the agent fills it at
runtime, and `createLLMToolSchema` keeps an empty one in the model's schema
precisely so it can. The tool-row editor already strips `required` for anything not
`user-only`; the fork collector was the only surface that did not.
Cause B - demanding a value the source never had. `projectId` hangs off the
credential anchor, so a Jira block on `write` with a blank project emitted a
required row. The proof it is a collector bug: only members carrying a
`selectorKey` are emitted, so the basic selector gated while its advanced twin
(identical `required`, no `selectorKey`) did not - the same empty config blocked or
not purely on a display preference. That is also why toggling to manual mode
"fixed" it.
Neither fix subsumes the other: an emptiness guard alone leaves a *populated*
`user-or-llm` param gating after a parent swap (`effectiveDependentValue` blanks it
when the parent changed), and the visibility rule alone never touches top-level
subblocks.
Both invariants now meet in one predicate, and the tool-row rule is extracted so
the editor and the sync gate cannot drift. Rows are still emitted either way - only
the gating flag changes - so no stored dependent value is orphaned.
Also fixes the placeholder stutter in the re-pick selector ("Select select issue"),
which composed a verb onto titles that already read as instructions.
Verified end-to-end against a forked workspace: before, 3 of 7 rows were required
(including one with a populated source value); after, only a top-level populated
required field gates, Sync enables, and the badge reads "Fully mapped".
* fix(forks): ask emptiness of the raw dependent value, not the coerced one
Pre-landing review caught a silent un-gating in the new predicate: it asked
`isNonEmptyValue` about `rawSourceValue`, which flattens every non-string to `''`
for the wire contract. A multi-select dependent selector stores an array, so a
populated one reported blank and stopped gating the sync. `isNonEmptyValue`
handles arrays and non-strings deliberately - give it the raw value.
Reachable today via zoho-desk `departmentIds`, the one multi-select dependent
selector with a `selectorKey` + `dependsOn`.
Also from review:
- the canonical id is an alias, so it no longer clobbers a param that owns that
key as its own `paramId` (first write wins)
- drop a redundant conjunct that implied a third state the code cannot reach
- document the present-but-undefined visibility case, which the resolver's
`buildToolInputSearchConfig` branch produces routinely
- extract the placeholder-noun transform so a bare "Select" title falls back to
the whole title instead of rendering "Select " / "No found", and test it
Tests: non-string and empty-array source values, both verified to fail without
the fix; the basic/advanced parity case now pins both shapes rather than calling
`.every()` on an empty array; the indexer mock is reset per test so the new cases
are not order-dependent.
* fix(forks): make the post-sync collector honor tool param visibility too
Greptile caught a real asymmetry, and corrected a wrong assumption in the first
commit: `needsConfiguration` is NOT warning-only. `promote.ts:1035` skips the
target's redeploy for any workflow in that list, and `:792` also withholds its
chat-deployment carry-over.
So with only the pre-sync collector fixed, an Agent block whose Jira `issueKey`
was populated in the target and cleared by a credential remap would let the sync
through (the modal correctly treats a model-supplied param as non-blocking) and
then silently decline to redeploy that workflow - leaving the fork running its
previous deployed version with no gate and no error.
Both collectors now resolve `required` through one shared
`resolveToolParamRequired`, so the pre-sync gate and the promote path cannot
disagree about what a nested tool param means. The lookup (sub-block id, then
canonical param id, then fail closed to the block-level rule) lives in one place
instead of being duplicated.
The `@/tools/params` mock in remap-references.test.ts is now overridable so a
test can opt into an authoritative resolution; its defaults are unchanged and
the other 74 tests pass untouched. The new case is verified to fail without the
fix.
* style(forks): use TSDoc for the new test declaration comments
CLAUDE.md requires TSDoc for documentation and no non-TSDoc comments. The
vi.mock boundary note, the resolve helper, and the beforeEach mock-reset
rationale all document declarations, so doc tooling could not associate them.
In-body step comments are left as-is - they explain a flow, not a declaration.
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 update # pull/rebuild and apply Compose images
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.




