Retool AI

Retool provides a visual canvas-based IDE where developers drag pre-built UI components (tables, forms, charts, modals) onto a workspace and wire them together declaratively without writing HTML/CSS. Components automatically bind to data sources and expose event handlers for conditional logic, enabling rapid CRUD app construction. The builder generates underlying React component code that can be inspected and customized.

Retool abstracts database connections (PostgreSQL, MySQL, MongoDB, etc.) and REST/GraphQL APIs into a query layer where developers write SQL or API calls once and bind results to UI components via reactive data binding. Queries execute server-side, reducing client-side data exposure, and support parameterization, pagination, and caching. The platform automatically handles connection pooling and credential management through encrypted secret storage.

Retool supports exporting data to CSV, Excel, and PDF formats with customizable templates. Developers can design PDF reports using a template editor (similar to the UI builder) that pulls data from queries and formats it for printing. Exports can be triggered from buttons or workflows and support dynamic filtering (e.g., export only selected rows). The platform handles file generation server-side and streams results to the client.

Retool apps automatically adapt to mobile viewports through responsive layout components (mobile-specific containers, collapsible sidebars). The platform also supports building native iOS and Android apps using React Native, allowing the same app logic to run on mobile devices. Mobile apps can access device features (camera, location, contacts) through Retool's mobile SDK.

Retool integrates with vector databases (Pinecone, Weaviate, Milvus, Supabase pgvector) and LLM embedding services to enable semantic search capabilities within internal tools. Developers can index documents, execute similarity searches, and chain results into LLM prompts for retrieval-augmented generation (RAG) workflows. The platform handles embedding generation, vector storage queries, and result ranking without requiring custom vector database SDKs.

Retool provides a query builder for LLM interactions supporting OpenAI, Anthropic, Cohere, and local models (via Ollama). Developers compose prompts with template variables, chain multiple LLM calls together (e.g., classify text, then generate response), and handle streaming responses. The platform manages API keys, token counting, and cost tracking. Prompts can reference previous query results and component state, enabling dynamic context injection.

Retool provides a visual event handler system where developers attach JavaScript expressions to component events (button clicks, form submissions, data changes) and define conditional branches (if-then-else) that trigger queries, update component state, or navigate between pages. State is managed reactively — changes to variables automatically re-render dependent components. The platform supports JavaScript evaluation with access to component values, query results, and global app state.

Retool provides built-in RBAC where developers define roles (Admin, Editor, Viewer) and assign permissions at the app, query, and component level. Row-level security (RLS) is enforced by parameterizing queries with user context (user ID, organization ID) so database queries automatically filter results based on logged-in user. The platform integrates with SSO providers (OAuth, SAML, LDAP) for authentication and stores user metadata that can be referenced in queries and visibility rules.

Retool supports real-time data updates via WebSocket subscriptions to databases (PostgreSQL LISTEN/NOTIFY, Firebase Realtime Database) and APIs that emit events. Developers configure subscriptions in the query builder, and Retool automatically re-executes dependent queries when data changes, updating UI components without polling. The platform handles connection management, reconnection logic, and backpressure.

Retool enables bulk operations (insert, update, delete) on multiple rows through batch query execution. Developers can select rows in a table, trigger a batch operation, and Retool executes the query for each row in a single transaction. The platform supports rollback on failure, progress tracking, and error reporting per row. Batch operations can be parameterized with row-specific values (e.g., update each row's status based on its ID).

Retool allows developers to write custom React components in TypeScript/JavaScript and embed them in apps alongside built-in components. Custom components can access app state, trigger queries, and emit events. The platform provides a code editor with syntax highlighting, type hints, and hot-reload for rapid iteration. Custom components are packaged as reusable modules that can be shared across apps.

Retool provides a workflow builder for automating multi-step processes triggered by schedules (cron expressions), webhooks, or manual execution. Workflows chain queries and conditional logic together (similar to event handlers) and can run asynchronously in the background. The platform logs execution history, supports error handling and retries, and can send notifications on completion or failure.