What's new in fastn.

v1.0.4

Jan 21, 2026

• •Enhanced Product Stability - Resolved critical issues and improved overall system reliability for production workloads.
• •UCL Playground UI Improvements - Refined interface elements for better usability and streamlined testing workflows.
• •In-Chat Connection for Playground - Connect and test tools directly within the playground chat interface without leaving your workspace.
• •UCL-Tools Python SDK - Official Python SDK for programmatic access to UCL tools, enabling seamless integration into Python-based applications.
• •UCL-Tools TypeScript SDK - Official TypeScript SDK for programmatic access to UCL tools, enabling seamless integration into TypeScript and JavaScript projects.

v1.0.3

Dec 4, 2025

• •Improved UI Across Connect & Tools Management - Updated visual layout for smoother navigation, clearer tool management, and better overall usability.
• •Create a Database Connector - Users can now build database connectors directly from Manage Tools within the Connect section. Select Add Toolkit, enter database details, authorize the connection, and optionally define custom tools for the connector.
• •SQL Query Access for Database Tools - For custom tools built on a database connector, users can now retrieve and view the underlying SQL query used for execution.
• •Improved Details for Connector Actions - Each enabled tool within a connector now displays clearer, more structured details, allowing better visibility and easier debugging.
• •Customize Schema Details - Users can update their tools schema to help agents understand the input schema fields for the specific tool.
• •Updated documentation covering release and pipeline features, connector authentication, and more.

v1.0.2

Nov 7, 2025

• •Improved Workspace Performance - Optimized handling of multiple gateways for smoother execution across projects.
• •Multiple MCP Gateways within Same Workspace - “Create an Agent” is now “Create an MCP Gateway,” allowing users to create multiple gateways within a single workspace and invoke them using their unique agent_id.
• •Input / Output Schema Filtering - Define and manage the input and response schemas of tools directly within UCL to ensure structured and predictable data flow.
• •Run Custom Fastn Workflows as Tools - Execute personalized fastn workflows as callable tools inside UCL for extended automation.
• •Expanded content with new setup paths for MCP Gateway creation, schema filtering, custom connector, and flow components.
• •Refreshed documentation and revised examples for improved clarity and developer guidance.

v1.0.1

Nov 1, 2025

• •Data Sync - Users can now create multiple data syncs that run automatically based on custom schedules. Each sync includes detailed logs to monitor execution results and performance.
• •Create an Agent - Users can connect specific connectors to each agent and invoke them using the agent_id embedded within UCL’s server URL.
• •Detailed setup and scheduling instructions for Data Sync added to the documentation.

v1.0.0

Sep 18, 2025

• •Modernized Connect UI with a consolidated view of integrations and a clear overview of actions enabled/disabled.
• •Each connector now includes concise capability descriptions for quicker evaluation.
• •Universal Embed support - Single flow to integrate UCL into any client app.
• •Sandbox mode - Evaluate UCL without creating an agent; start with your LLM_API_KEY and UCL_SERVER_URL.
• •Added prerequisites and step-by-step instructions to the Embed section for a consistent setup path across platforms.