* fix(ashby): parse alternateEmailAddresses and socialLinks into arrays before dispatch
The Ashby create_candidate and update_candidate tools require
alternateEmailAddresses (string[]) and socialLinks ({type,url}[]) as
JSON arrays in the request body, guarded by Array.isArray checks. The
block collected both through long-input text fields but forwarded the
raw string straight through to tools.config.params, so Array.isArray
was always false and both fields were silently dropped on every
create/update call.
Parse them in tools.config.params (execution-time, after variable
resolution) using the same comma-separated-or-JSON-array pattern used
elsewhere in the codebase (see blocks/findymail.ts), and add wandConfig
to both fields so the AI wand can generate well-formed input for them.
* fix(ashby): drop json-object generationType from array-shaped wandConfig fields
generationType: 'json-object' makes the wand API append an instruction
that the response must start with { and end with }, but
alternateEmailAddresses/socialLinks parse a raw JSON array or
comma-separated string, not an object. A wand-generated
{"emails":[...]}-shaped response would get comma-split into invalid
email fragments by parseStringListInput, and an object-wrapped
socialLinks response would get silently dropped by parseSocialLinksInput
returning []. Matches the existing array-field wandConfig pattern in
blocks/findymail.ts, which never sets generationType and relies on the
prompt text alone.
* fix(ashby): remove the non-functional candidateId filter from list_applications
Live-verified against Ashby's application.list endpoint: passing
candidateId (including a nonexistent UUID) returns identical, unfiltered
results either way — Ashby's API silently ignores this body field
entirely. Sending it gave users the false impression of filtering by
candidate while actually returning every application. Removed the param,
the tool type, and the block's filterCandidateId subBlock/wiring/input.
The correct path for a candidate's applications is ashby_get_candidate's
applicationIds field.
* fix(ashby): add subblock-id migration for the removed filterCandidateId field
The subblock ID stability CI check correctly caught that removing
filterCandidateId without a migration entry would silently drop the
value on already-deployed workflows. Added the standard _removed_ mapping,
following the same pattern already used for this block's prior removals
(emailType, phoneType, expandApplicationFormDefinition,
expandSurveyFormDefinitions).
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.





