Execute Workflows with Total Reliability
The battle-tested execution engine behind every OrchStack agent. Full tracing, 5-tier memory, sandboxed tool execution, and human-in-the-loop gates — so your agents never lose state and always stay under control.
Built-in Orchestration Patterns
Four battle-tested patterns for composing agent workflows. Mix and match to model any business process.
Sequential Chain
Tasks execute one after another. Output of each step feeds into the next.
Parallel Fan-out
Fan-out to multiple agents simultaneously, then merge results at a join point.
Conditional Branching
Decision node evaluates conditions and routes to the appropriate branch.
Supervisor Delegation
A supervisor agent delegates tasks to worker agents and collects their results.
Sandboxed Tool Execution
Every tool call runs in an isolated sandbox with automatic retry, timeout handling, and circuit breakers. Your agents never hang.
100+ Pre-built Connectors
CRMs, messaging, databases, payment gateways, and cloud services ready to use out of the box.
MCP Protocol Support
Connect any MCP-compatible tool server for infinite extensibility beyond built-in connectors.
Automatic Retry with Backoff
Exponential backoff with jitter ensures transient failures don't crash your workflow.
Circuit Breakers & Timeouts
Automatic timeout handling and circuit breakers prevent cascading failures across tool calls.
import { defineTool } from '@orchstack/sdk'
const sendInvoice = defineTool({
name: 'send_invoice',
description: 'Send invoice to client',
retry: { maxAttempts: 3, backoff: 'exponential' },
timeout: 30_000,
sandbox: true,
async execute(params) {
return stripe.invoices.create(params);
}
});5-Tier Memory System
From ephemeral conversation context to cross-tenant collective intelligence. Every tier purpose-built for a different access pattern.
Session Memory
RedisConversation context within a single interaction. Fast, ephemeral, sub-millisecond access.
Long-term Memory
PostgreSQLPersistent facts and learned preferences that survive across sessions and restarts.
Entity Memory
Graph StoreStructured knowledge about people, companies, and relationships between entities.
Shared Memory
Team StoreTeam-wide context shared across multiple agents working on the same tenant.
Collective Memory
FederatedCross-tenant anonymized patterns and insights that improve all agents over time.
Expanding scope from session to collective
Human Gates for Critical Decisions
Your agents pause when it matters. Approval, edit, and review gates ensure humans stay in control of high-stakes actions.
Approval Gates
Agent pauses execution and waits for human approval before proceeding with sensitive actions.
Edit Gates
Human can review and modify the agent's proposed action before it executes.
Review Gates
Post-execution review where humans verify outcomes and provide feedback.
Timeout Escalation
Configurable timeout with automatic escalation if the human does not respond in time.
Run Replay & Full Tracing
Every decision, every tool call, every token — traced and replayable. Debug production issues in seconds, not hours.
Everything Your Agents Need to Execute
A complete runtime engine where every component is built to work together at production scale.
Orchestration Engine
Sequential, parallel, conditional, and supervisor patterns for composing any workflow.
Tool Sandbox
Every tool call executes in an isolated sandbox with retry, timeout, and circuit breakers.
5-Tier Memory
Session, long-term, entity, shared, and collective memory layers for persistent context.
Human Gates
Approval, edit, and review gates with configurable timeouts and escalation policies.
Run Replay
Full tracing of every decision, tool call, and token. Step-by-step replay for debugging.
Auto-scaling
Horizontal scaling from zero to thousands of concurrent runs with automatic load balancing.
Frequently Asked Questions
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