Glossary

Alphabetized definitions of every term used across the Fastn platform and documentation.

Term	Definition	Where to find it
Connector	A pre-built integration with a third-party system (Salesforce, Slack, Shopify, etc.). Handles authentication and exposes that system's actions.	Integrations → Connectors
Connection	An authenticated instance of a connector for a specific account. One connector can have multiple connections (e.g., two Slack workspaces).	Integrations → Connections
Workflow	An automation that moves and transforms data between systems. Built by AI agents from a plain-language description; the generated code can be inspected.	Integrations → Workflows
Trigger	What starts a workflow. Three types: Webhook, Scheduler, App Event.	Integrations → Triggers
Customer	An end user organization of your SaaS product. Each customer's connections and data are isolated.	Settings → Customers
Widget	The embedded interface your customers use to connect apps and manage integrations inside your product.	Widgets → Widget Builder
Setup Assistant	The AI-guided onboarding wizard that configures a new SaaS partner's integration platform (Use cases → Connectors → Workflows → Embed → Live).	Home page
Build with AI	The label for the AI integration/workflow builder.	Workflows tab; embedded widget
Agent	The Integrations sub-tab where you describe an integration and the AI agents build it.	Integrations → Agent
AI Assistant	A toggleable widget section that lets your customers describe an automation and have it built inside the widget.	Widget sections
MCP Gateway	The endpoint that exposes integrations as tools for AI agents, over the Model Context Protocol. Has a Control Plane (Admin MCP) and a Data Plane (Customer Gateway).	Widgets → Embed → MCP
Embed token	A short-lived token (15-minute expiry, emb_ prefix) generated from your backend that scopes an embedded widget to a specific customer.	Generated via the embed token API
API key	A credential in fsk_ format (fsk_test_ or fsk_live_) used to authenticate backend API calls, including generating embed tokens.	Settings → API Keys
Execution tier	A workflow's runtime mode: Instant (synchronous, ≤60s), Standard (async, ≤15min), or Long (async, ≤6hr).	Workflow editor → Configuration
Dead Letter Queue (DLQ)	An option on webhook triggers that captures failed events for later inspection or replay.	Triggers → Webhook → Advanced options
Org-level / User-level	The two ways a connection can be scoped: shared across a customer's whole organization (org-level) or isolated to an individual user (user-level).	Set via the embed iframe URL