Fabric Orchestrator
The intelligent coordinator that routes tasks, manages workflows, and learns from experience.
The Fabric Orchestrator is the brain of Fabric AI. It intelligently routes your requests to the right agents and tools, manages complex multi-step workflows, and learns from every interaction to get better over time.
What Makes the Orchestrator Special?
Before the Orchestrator
With the Orchestrator
Core Capabilities
1. User Intent Detection
The Orchestrator understands what you're asking for, including explicit requests:
Recognized intents:
- Explicit tool requests — "use the Jira tool", "search with GitHub"
- YouTube URLs — Automatically routes to transcript extraction
- Workspace references — "my docs", "attached files" → use RAG
- Integration triggers — "post to Slack", "send an email"
- Fabric patterns — "summarize", "extract wisdom", "analyze claims"
2. Semantic Routing
The Orchestrator uses AI embeddings to find the best executor for your task:
Why this matters:
- No need to remember which tool does what
- Works with 100+ tools without confusion
- Natural language understanding
- Respects explicit user preferences
3. Task Planning
Complex requests are automatically decomposed:
4. Priority-Based Executor Assignment
Each step is assigned the optimal executor based on capability and speed:
| Priority | Executor Type | Use Case |
|---|---|---|
| 1 | Workflow Integrations | Slack, GitHub, Email—fastest path |
| 2 | MCP Tools | Connected services via MCP protocol |
| 3 | Fabric AI Tools | YouTube, web scraping, audio |
| 4 | Specialized Agents | Tasks requiring AI reasoning |
| 5 | Pre-defined Workflows | Complex automations |
| 6 | LLM | Simple text generation |
| 7 | Web/Browser | Browser automation (last resort) |
5. Context Flow
Each step can use outputs from previous steps:
Variable interpolation allows referencing previous step outputs:
// Step 4 can reference previous outputs
{
message: "PRD: {{step-1.output.title}}. Tickets: {{step-3.output.ticket_ids}}"
}6. Trust-Based Approvals
The Orchestrator learns what you approve:
7. Memory System
The Orchestrator remembers what works and what doesn't:
Positive Memory (Letta + Qdrant):
- Successful routing patterns
- Effective tool combinations
- Working prompts and parameters
Negative Memory:
- Failed approaches
- Rate-limited operations
- Error-prone patterns
New request similar to past failure:
"⚠️ Similar task failed 3 days ago due to rate limiting.
Automatically batching operations with delays."8. Graceful Recovery
When things go wrong, the Orchestrator handles it:
| Error Type | Response |
|---|---|
| Timeout | Retry with longer timeout |
| Rate limit | Exponential backoff |
| Network error | Retry with backoff |
| Validation error | Fix and retry once |
| Not found | Skip step, continue |
| Auth error | Fail gracefully, alert user |
Workflow Integrations
The Orchestrator includes built-in integrations for common services—faster than MCP:
Available Integrations
| Integration | Operations | Speed |
|---|---|---|
| Slack | send_message, post_notification, send_dm | ~200ms |
| GitHub | create_issue, create_pr, list_issues | ~300ms |
| Linear | create_issue, list_issues, update_issue | ~250ms |
| send_email (via Resend) | ~400ms | |
| Webhooks | Custom HTTP calls | ~200ms |
Integration vs. MCP Tools
Fabric AI Tools
Built-in tools for content processing without external dependencies:
YouTube Tools
fabric_youtube_transcript— Extract raw transcripts with optional timestampsfabric_analyze_youtube— Apply patterns: summarize, extract_wisdom, analyze_claims, create_keynote
Web Tools
fabric_scrape_url— Scrape and readability-enhance web contentfabric_analyze_webpage— Apply Fabric patterns to web content
Audio Tools
fabric_transcribe_audio— Convert audio files to text
MCP Tool Integration
The Orchestrator can execute MCP tools directly:
Available Tools
- GitHub — Issues, PRs, repositories
- Jira — Tickets, sprints, projects
- Slack — Messages, channels
- Notion — Pages, databases
- Linear — Issues, projects
- And many more...
Tool Selection
The Orchestrator automatically selects tools:
Tool vs. Agent Delegation
| Scenario | Use Tool | Use Agent |
|---|---|---|
| Direct API call | ✓ | |
| Simple CRUD | ✓ | |
| Needs reasoning | ✓ | |
| Complex generation | ✓ | |
| Multi-step logic | ✓ |
Starred Preferences
Prioritize your favorite tools, servers, and agents:
How to Star
- Go to Settings → MCP Servers or Agents
- Click the ⭐ icon next to items you use frequently
- Starred items get priority in routing decisions
What Starring Does
| Starred Item | Effect |
|---|---|
| MCP Server | ALL tools from that server get elevated priority |
| Specific Tool | Individual tool boosted in semantic search |
| Agent | Preferred agent considered first for delegation |
| Integration | Favorite integration prioritized |
Using the Orchestrator
Starting a Conversation
- Go to Agents → Fabric AI (Orchestrator)
- Type your request naturally
- The Orchestrator handles the rest
Example Requests
Simple:
"Create a PRD for user authentication"Multi-step:
"Create a PRD for the payment feature, then generate
user stories and create them in Jira"With context:
"Based on our Q4 roadmap, create a technical spec
for the new API gateway and post a summary to #engineering"YouTube processing:
"Summarize this video and extract the key insights:
https://youtube.com/watch?v=..."Web research:
"Scrape this article and create a summary with key takeaways:
https://example.com/article"Execution Modes
Choose the right mode for your task:
| Mode | Max Steps | Use Case |
|---|---|---|
| Lite | 10 | Quick tasks, simple queries |
| Balanced | 20 | Standard workflows (default) |
| Deep | 25 | Complex multi-agent tasks |
Attaching Context
Improve results by attaching:
- Workspaces — Documents for RAG context
- Projects — Previous project documents
- Specific files — Upload directly
Workflow Visualization
Watch your workflow execute in real-time:
Approval Workflows
When Approvals Are Needed
The Orchestrator requests approval for:
- High-risk operations — Delete, bulk updates
- External actions — First-time tool usage
- Expensive operations — Large API calls
- Unknown patterns — New types of requests
Risk Levels
| Operation | Risk Level | Approval |
|---|---|---|
| Read/List/Search | Low | Auto-approved |
| Update/Modify | Medium | Check trust history |
| Create/Insert | High | Ask if untrusted |
| Delete/Bulk ops | Critical | Always ask |
| Code execution | Medium+ | Check trust history |
| Browser automation | Medium+ | Check trust history |
Approval Interface
Consolidated Prompts
Multiple approvals are grouped into one:
Before: 5 separate approval prompts
After: 1 consolidated prompt with all actions listedAdvanced Features
Follow-up Handling
The Orchestrator understands context:
You: "Create a PRD for auth"
Orchestrator: [Generates PRD]
You: "Actually, also include OAuth support"
Orchestrator: "Updating PRD to include OAuth..."
[Modifies existing document, not starting over]Journey Tracking
Full context is maintained:
- Current phase of execution
- Decisions made and why
- Assumptions with confidence levels
- All artifacts generated
- Complete conversation history
Real-time Signals
Query workflow state anytime:
// Get current progress
const progress = await orchestrator.query('progress');
// { currentStep: 2, totalSteps: 5, status: 'executing' }
// Get generated artifacts
const artifacts = await orchestrator.query('artifacts');
// [{ type: 'prd', name: 'Auth PRD', status: 'complete' }]Generalist Agent Delegation
For complex tasks requiring autonomous execution:
| Delegation Mode | Behavior |
|---|---|
single-step | Orchestrator decomposes, agent executes steps |
complete-task | Agent handles entire task autonomously |