fastn.ai

fastn.ai

Unified API to embed and manage SaaS integrations.

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Overview

Fastn.ai is a unified integration platform that enables SaaS products to connect securely with hundreds of third-party applications through a single API. Instead of building and maintaining multiple custom connectors, teams use Fastn to authenticate, orchestrate, and monitor integrations from one place.

With Fastn, developers can:

  • Add integrations with email, meetings, CRMs, and project tools in minutes.
  • Manage authentication, token refresh, and error handling automatically.
  • Use the dashboard to monitor workspace activity, latency, and API call metrics.
  • Support AI-powered workflows that trigger or combine multiple app actions.

Fastn eliminates repetitive backend work and accelerates go-to-market for integration-driven products.

How it works

  1. Authenticate — Connect any supported app using OAuth 2.0 via Fastn’s unified authorization flow.
  2. Configure — Select prebuilt connectors or define custom actions through Fastn’s command layer.
  3. Integrate — Use a single API to read, write, and automate across multiple apps.
  4. Monitor — Track integration performance, API usage, and errors in real time from the dashboard.

Fastn’s Unified Command Layer (UCL) enables developers and AI agents to perform tasks through natural-language or API-level commands, such as scheduling meetings, sending emails, or syncing customer data across platforms.

Configure

  1. Sign in to your Fastn workspace.
  2. Navigate to Connectors and select Attio.
  3. Click Connect to securely authenticate your Attio account.
  4. Configure your workspace to enable actions such as deal and company syncing, record updates, and activity tracking.
  5. Test the connection and deploy.

Fastn automatically manages OAuth tokens, permission scopes, and data isolation, ensuring a secure, multitenant integration for all connected users.