Glossary

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

Term	Definition
Action	An operation a connector can perform on a third-party app. Examples: create a contact, fetch orders, send a message.
Action Fixer	AI sub-agent within the Connector Agent that fixes broken actions using real API docs and applies schema patches.
Action Tester	AI sub-agent within the Connector Agent that executes actions against real test connections and reports pass/fail.
Active	Workflow status indicating it is deployed and can be triggered. Shown as a green checkmark badge in the Workflows table.
Admin	System role with 39 permissions. Full access within organization and customers.
Alert Rule	A monitoring rule under Activity → Alerts that triggers when a metric condition exceeds a threshold. Conditions: error rate, latency p99/p95/avg, throughput, failure count.
API Key	Authentication credential for programmatic access. Two types: Test (development) and Live (production). Managed under Settings → API Keys. Passed via the x-fastn-api-key header.
App Event	A trigger type that subscribes to events from connectors (e.g., "Sale Created" from Cin7). Managed under Integrations → Triggers → App Events.
Audit Log	Immutable record of all actions across your organization. Found under Settings → Audit Log. Columns: Timestamp, User, Action, Resource, Outcome.
Backfill	Background process that syncs historical data between systems.
Basic Auth	Authentication method using username/password pair. One of 6 auth methods for connectors.
Bearer Token	Authentication method sending a token in the Authorization header as Bearer {token}. One of 6 auth methods for connectors.
Build with AI	Button on the Connectors and Workflows pages that opens the AI agent (Connector Agent or Standalone Workflow Builder) to create resources via natural language.
CDM	Canonical Data Model. Fastn's universal data format. Six entities: Contact, Product, Order, Invoice, InventoryLevel, Fulfillment.
CDMContact	CDM entity for unified customer/contact data. Fields: id, email, firstName, lastName, company, phone, addresses, tags, customFields.
CDMFulfillment	CDM entity for shipping and fulfillment tracking. Fields: id, orderId, status, trackingNumber, carrier, lineItems, shippedAt.
CDMInventoryLevel	CDM entity for real-time inventory. Fields: productId, variantId, locationId, available, onHand, committed, reserved.
CDMInvoice	CDM entity for invoice normalization. Fields: id, contact, lineItems, totals, status, dueDate, payments, currency.
CDMOrder	CDM entity for order data. Fields: id, contact, lineItems, totals, payments, status, shippingAddress, billingAddress.
CDMProduct	CDM entity for product catalog normalization. Fields: id, name, sku, description, variants, pricingTiers, category, status, inventory.
Configuration Agent	AI agent that probes live APIs to gather sample data and helps define filter conditions and targets.
Connection	An authenticated instance of a connector with stored credentials. Each customer creates their own connection. Managed under Integrations → Connections.
Connector	An integration definition for a third-party app. Defines auth methods, actions, and events. Managed under Integrations → Connectors. Created manually (+ Create) or via AI (Build with AI).
Connector Agent	Orchestrated AI agent coordinating 6 sub-agents (Connector Builder, Spec Import Builder, Manual Action Builder, Event Builder, Action Tester, Action Fixer). Accessed via "Build with AI" on Connectors page.
Connector Builder	AI sub-agent within the Connector Agent that creates connectors with auth setup, API actions, and webhook events.
Create Connector	Dialog for manually creating a connector. Fields: Name, Slug, Description, Domain, Visibility, Icon URL, Auth Methods.
Custom	Authentication method using a custom handler for proprietary auth flows. One of 6 auth methods for connectors.
Customer	Your end user. Each customer gets an isolated environment with their own connections, data, and execution history. Managed under Settings → Customers. (Called "Tenant" in V1.)
Dead Letter Queue (DLQ)	PostgreSQL table capturing failed events with full payload and error context. Events can be replayed.
Developer	System role with 34 permissions. Can build connectors, workflows, and agents. Cannot manage billing or org settings.
Domain & Access Control	Setting under Settings → General that controls how users from your email domain join your organization. Supports auto-approve toggle.
End User	System role with 9 permissions. Customer-facing widget access only.
Environment	Deployment environment for workflows (dev, staging, production). Managed under Settings → Environments.
Event	A notification that something happened — incoming webhook, scheduled execution, or manual trigger. Monitored under Activity → Events with filters: All, Webhook, Scheduled, Manual.
Event Builder	AI sub-agent within the Connector Agent that creates webhook events and configures subscribe/unsubscribe lifecycle.
Execution	A single run of a workflow. Logged under Activity → Executions with columns: Time, Workflow, Tier, Version, Status, Duration, Triggered By.
Execution Tier	Workflow configuration that determines execution behavior. Three tiers: Instant (sync, max 60s), Standard (async, default), Long (extended).
Execution Timeout	Maximum time a workflow can run before being terminated. Configurable per workflow.
Free Plan	Default plan for new accounts ($0/mo). Limits: 500 events/day, 10 events/min, 1,000 API calls/day, 20 API calls/min.
Hard Block	Quota enforcement mode. Request rejected immediately with HTTP 429 when limit is reached.
HMAC	Hash-based Message Authentication Code (SHA-256). Used by the webhook receiver to verify incoming webhooks.
Instant	Execution tier. Synchronous — returns result inline. Max 60 seconds.
Intelligence Brief	Multi-agent graph that researches companies and produces integration strategy briefs.
Long	Execution tier. Extended async execution for large data volumes.
Manual Action Builder	AI sub-agent within the Connector Agent that creates API actions one-by-one from docs when no spec exists.
MCP	Model Context Protocol. Open protocol for AI agent tool discovery. Fastn implements an MCP server.
No Auth	Authentication method for public APIs requiring no credentials. One of 6 auth methods for connectors.
OAuth 2.0	Authentication method where users authorize via the app's login screen. Fastn manages token storage and refresh. One of 6 auth methods.
OAuth Apps	Fastn-managed OAuth applications under Settings → OAuth Apps. Authenticate connectors for supported platforms without creating your own OAuth app.
Operator	System role with 18 permissions. Operational access — run workflows, monitor activity.
Owner	System role with 39 permissions. Full access within organization and customers.
Planner Agent	AI sub-agent within the Workflow Agent that analyzes requirements, asks clarifying questions, and produces build plans.
Retry Policy	Workflow setting (toggle on/off) that enables automatic retry on execution failure.
RLS	Row-Level Security. PostgreSQL policies enforcing customer data isolation at the database level.
Route	A mapping within a webhook trigger that directs incoming payloads to a specific workflow. Supports JSON filters and headers. A single webhook can have multiple routes.
SaaS Onboarding	AI agent that guides SaaS companies through the Setup Assistants on the Home page.
Scheduler	A trigger type that runs workflows on a schedule. Presets: Interval, Daily, Weekly, Monthly, Custom. Managed under Integrations → Triggers → Schedulers.
Secret	Encrypted value accessible by workflows at runtime. Managed under Settings → Secrets.
Setup Assistants	AI-guided 5-step onboarding on the Home page: Research → Connectors → Integration → Widget → Done.
Slug	URL-safe identifier for a connector, auto-generated from the name.
Spec Import Builder	AI sub-agent within the Connector Agent that finds and imports machine-readable API specs (OpenAPI, Swagger, Postman).
Standard	Execution tier. Default async execution.
Standalone Workflow Builder	AI workflow builder accessed via "Build with AI" on the Workflows page. Builds and validates only — no planner, config, or connector agents.
Tenant Onboarding	AI agent that helps customers connect tools and configure integrations via the widget.
Test Case Agent	AI sub-agent within the Workflow Agent that generates executable test cases.
Trace	Connector execution trace showing performance data. Monitored under Activity → Traces with filters: All, Success, Error, Pending.
Trigger	What starts a workflow. Three types: Webhook, Scheduler, App Event. Managed separately from workflows under Integrations → Triggers.
Viewer	System role with 7 permissions. Read-only access.
Visibility	Connector setting controlling who can see it. Options: Private, Public.
Webhook	A trigger type that receives events from external services via HTTP POST. Supports routes with JSON filters. Managed under Integrations → Triggers → Webhooks.
Workflow	An automated process written in JavaScript/TypeScript. Each workflow exports a default async function receiving a context object (ctx). Managed under Integrations → Workflows.
Workflow Agent	Orchestrated AI agent coordinating Planner Agent, Workflow Builder, and Test Case Agent.
Workflow Builder	AI agent that builds workflows from a plan and validates against test cases.