The core engine behind Flowlib. Contains all business logic — flows, execution, actions, agents, credentials, and database — independent of any web framework.

Framework packages (@flowlib/express, @flowlib/nestjs, @flowlib/nextjs) are thin adapters that wrap this core.

Install

npx flowlib-cli init

Or install manually:

npm install @flowlib/core

Usage

import { createFlowlib } from '@flowlib/core';

const flowlib = await createFlowlib({
  database: {
    type: 'sqlite',
    connectionString: 'file:./dev.db',
  },
  encryptionKey: process.env.FLOWLIB_ENCRYPTION_KEY, // npx flowlib-cli secret
});

// Create and run flows programmatically
const flow = await flowlib.flows.create({ name: 'My Workflow' });
const result = await flowlib.runs.start(flow.id, { message: 'Hello' });

What's Inside

• Flow engine — Topological execution with dependency resolution, branching, loops, and pause/resume.
• 50+ actions — Gmail, Slack, GitHub, Google Drive, Linear, Postgres, HTTP, JQ, and more. Each action works as both a flow node and an agent tool.
• AI agents — Iterative tool-calling loops with OpenAI and Anthropic APIs.
• Batch processing — Native OpenAI and Anthropic batch API support with automatic pause/resume.
• Credentials — AES-256-GCM encrypted storage with full OAuth2 flow support.
• Multi-database — SQLite, PostgreSQL, and MySQL. Works with Drizzle ORM, Prisma, or raw SQL migrations.
• Plugin system — Composable plugins for auth, RBAC, and custom extensions.

Types

Import types for frontend consumption from the /types subpath (no runtime code):

import type { FlowDefinition, FlowRunResult } from '@flowlib/core/types';

License

MIT