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* refactor(ashby): align tools, block, and triggers with Ashby API Audit-driven refactor to destructure rich fields per Ashby's API docs, centralize output shapes via shared mappers in tools/ashby/utils.ts, and align webhook provider handler with trigger IDs via a shared action map. Removes stale block outputs left over from prior flat response shapes. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * fix(ashby): remove stale noteId output and reject ping events - Remove stale `noteId` output descriptor from block (create_note now returns `id` at the top level via the shared note mapper). - Explicitly reject `ping` events in the webhook matchEvent before falling back to the generic triggerId check, so webhook records missing triggerId cannot execute workflows on Ashby ping probes. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * fix(ashby): trim optional ID params in create/update tools Optional ID params in create_application, change_application_stage, and update_candidate were passed through to the request body without .trim(), unlike their required ID siblings. Normalize to prevent copy-paste whitespace errors. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * fix(ashby): add subblock migration for removed filterCandidateId Add SUBBLOCK_ID_MIGRATIONS entry so deployed workflows that previously used the `filterCandidateId` subBlock on `list_applications` don't break after the field was removed (Ashby's application.list doesn't filter by candidateId). Also regenerate docs to sync noteId removal. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * fix(ashby): final API alignment from parallel validation - create_candidate: email is optional per Ashby docs (only name is required); tool, types, and block all made non-required. - list_applications: guard NaN when createdAfter can't be parsed so we don't send a bad value to Ashby's API. - webhook provider: replace createHmacVerifier with explicit fail-closed verifyAuth that 401s when secretToken, signature header, or signature match is missing (was previously fail-open on missing secret). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * fix(ashby): preserve input.data path in webhook formatInput Restore the explicit `data` key alongside the spread so deployed workflows that reference `input.data.application.*`, `input.data.candidate.*`, etc. keep working. The spread alone dropped those paths. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * refactor(ashby): drop legacy input.data key from webhook formatInput Keep formatInput aligned with the advertised trigger outputs schema (flat top-level entities) and drop the legacy input.data.* compat path. Every field declared in each trigger's outputs is now populated 1:1 by the data spread plus the explicit action key — no undeclared keys. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * fix(ashby): trim remaining ID body params for parity Add .trim() on sourceId (create_candidate), jobId (list_applications), applicationId and interviewStageId (list_interviews) to match the trim-on-IDs pattern used across the rest of the Ashby tools and guard against copy-paste whitespace. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * update docs --------- Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
The open-source platform to build AI agents and run your agentic workforce. Connect 1,000+ integrations and LLMs to orchestrate agentic workflows.
Build Workflows with Ease
Design agent workflows visually on a canvas—connect agents, tools, and blocks, then run them instantly.
Supercharge with Copilot
Leverage Copilot to generate nodes, fix errors, and iterate on flows directly from natural language.
Integrate Vector Databases
Upload documents to a vector store and let agents answer questions grounded in your specific content.
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