Connect your AI agents to any customer's app
Connect your AI agents to any customer's app
One Hub. Thousands of tools. Every Customer.
One Hub. Thousands of tools. Every Customer.
Fastn UCL is the first multi-tenant MCP for SaaS. Connect your AI agents to every tool your customers use, fully embedded in your product.
Fastn UCL is the first multi-tenant MCP for SaaS. Connect your AI agents to every tool your customers use, fully embedded in your product.
No credit card required
Introducing Fastn UCL
Unified Command Layer
Introducing Fastn UCL
Unified Command Layer
Fastn UCL is our next-gen abstraction built on top of the Fastn MCP foundation.
Fastn UCL is our next-gen abstraction built on top of the Fastn MCP foundation.
Unified Command Layer
One interface to command any system (Slack, Gmail, Snowflake, internal APIs, etc.)
Unified Command Layer
One interface to command any system (Slack, Gmail, Snowflake, internal APIs, etc.)
Unified Command Layer
One interface to command any system (Slack, Gmail, Snowflake, internal APIs, etc.)
Enterprise Ready
Built-in auth, monitoring, observability and multi-tenant by design
Enterprise Ready
Built-in auth, monitoring, observability and multi-tenant by design
Enterprise Ready
Built-in auth, monitoring, observability and multi-tenant by design
Resilient Infrastructure
Production-ready resilience with retries, timeouts, and batch processing
Resilient Infrastructure
Production-ready resilience with retries, timeouts, and batch processing
Resilient Infrastructure
Production-ready resilience with retries, timeouts, and batch processing
AI Optimized
Schema-flexible design works across dynamic enterprise data
AI Optimized
Schema-flexible design works across dynamic enterprise data
AI Optimized
Schema-flexible design works across dynamic enterprise data
Zero Maintenance
Managed infrastructure. No need to host MCP servers locally
Zero Maintenance
Managed infrastructure. No need to host MCP servers locally
Zero Maintenance
Managed infrastructure. No need to host MCP servers locally
What is Fastn UCL?
What is Fastn UCL?
What is Fastn UCL?
Why We Built UCL
Why We Built UCL
Why We Built UCL
With Fastn UCL, your AI product doesn't just talk to APIs — it speaks the same language, securely and at scale.
How it works
How it works
Connect Your Apps
Connect Your Apps
Easily link internal tools and external services so your AI agent can interact across your entire stack — all through a secure, unified connection.
Easily link internal tools and external services so your AI agent can interact across your entire stack — all through a secure, unified connection.
Embed Fastn UCL
Embed Fastn UCL
Use Fastn’s Agent to quickly connect and manage apps via the Universal Command Layer. With minimal setup and built-in multitenancy, it ensures secure tenant isolation while Fastn handles execution, routing, and permissions.
Use Fastn’s Agent to quickly connect and manage apps via the Universal Command Layer. With minimal setup and built-in multitenancy, it ensures secure tenant isolation while Fastn handles execution, routing, and permissions.
Monitor AI Actions
Monitor AI Actions
Track every AI action with real-time visibility. Monitor usage, debug issues, and optimize performance — all from a single dashboard.
Track every AI action with real-time visibility. Monitor usage, debug issues, and optimize performance — all from a single dashboard.
Feature Overview
Feature Overview
Fastn provides a unified orchestration layer to connect, try, and monitor AI-driven actions across all your tools — securely and at scale.
Fastn provides a unified orchestration layer to connect, try, and monitor AI-driven actions across all your tools — securely and at scale.
Single Orchestration Layer
Single Orchestration Layer
Unify every integration—Slack, CRM, Jira, AI models, email, and beyond—under one JSON API or SDK call.
Unify every integration—Slack, CRM, Jira, AI models, email, and beyond—under one JSON API or SDK call.
AI Action Agent
AI Action Agent
Empower your AI agents to safely execute real-world tasks through a single orchestration layer. Define, simulate, and trigger actions — from CLI commands to third-party API calls — all governed by clear, auditable policies.
Empower your AI agents to safely execute real-world tasks through a single orchestration layer. Define, simulate, and trigger actions — from CLI commands to third-party API calls — all governed by clear, auditable policies.
Multi tenancy
Multi tenancy
Fastn is built for modern, multi-tenant architectures. Each tenant’s data, permissions, and actions are securely isolated while sharing the same orchestration infrastructure — no extra setup required.
Fastn is built for modern, multi-tenant architectures. Each tenant’s data, permissions, and actions are securely isolated while sharing the same orchestration infrastructure — no extra setup required.
Why Enterprises Need More Than Basic MCP
Why Enterprises Need More Than Basic MCP
Model Context Protocol standardizes how AI models talk to tools—a critical first step. But enterprise environments face more complex challenges.
Model Context Protocol standardizes how AI models talk to tools—a critical first step. But enterprise environments face more complex challenges.
Multiple Tenant Contexts
Enterprise AI serves different departments, customers, and regions—each with unique data and requirements.
Enterprise AI serves different departments, customers, and regions—each with unique data and requirements.
MCP LIMITATION
No concept of tenancy or isolation
UCL SOLUTION
Complete multi-tenant architecture
No Build-in Authentication
Enterprise security adapts based on user, role, and scenario. Permissions vary by context and purpose.
Enterprise security adapts based on user, role, and scenario. Permissions vary by context and purpose.
MCP LIMITATION
No built-in auth or access control
UCL SOLUTION
Enterprise Authentication and Authorization
Enterprise Security & Data Privacy
Enterprise organizations require robust security controls for sensitive data. The basic MCP implementation creates potential security and privacy challenges in enterprise settings.
Enterprise organizations require robust security controls for sensitive data. The basic MCP implementation creates potential security and privacy challenges in enterprise settings.
MCP LIMITATION
Limited enterprise security controls
UCL SOLUTION
Enhanced security with access controls and monitoring
Compliance Requirements
Enterprise AI faces regulatory scrutiny. Auditors need complete records of who did what, when, and why.
Enterprise AI faces regulatory scrutiny. Auditors need complete records of who did what, when, and why.
MCP LIMITATION
No logging or monitoring
UCL SOLUTION
Built-in monitoring & audit trails
Enterprise Scalability
Enterprise deployments need to support thousands of users and hundreds of tools without performance degradation.
Enterprise deployments need to support thousands of users and hundreds of tools without performance degradation.
MCP LIMITATION
Breaks as tool count grows
UCL SOLUTION
Enterprise-grade scalability
Dynamic Data That Changes Constantly
Enterprise data sources update frequently. APIs evolve, database structures change, and configurations shift.
Enterprise data sources update frequently. APIs evolve, database structures change, and configurations shift.
MCP LIMITATION
Rigid connections break when schemas change
UCL SOLUTION
Adaptive handling accommodates changes
+1500 connectors
+1500 connectors
Fastn.ai vs Traditional Solutions
How Fastn.ai compares to traditional solutions like Others
fastn
Others
Multitenancy
Built-in, true multitenancy
Built-in, true multitenancy
Each user manages own workflow
Each user manages own workflow
White-labeling
Full brand control
Full brand control
Not always the case
Not always the case
Scalability
Enterprise-ready , any number of apps under one commad layer
Enterprise-ready , any number of apps under one commad layer
Scales poorly across tenants
Scales poorly across tenants
SDK / Developer Tools
SDKs & APIs available
SDKs & APIs available
Dev platform, but limited embedding
Dev platform, but limited embedding
Enterprise Flexibility |
Dynamic schema adaptation with fallback strategies and mapping resolution
Dynamic schema adaptation with fallback strategies and mapping resolution
Rigid static schema mapping; fragile with dynamic data
Rigid static schema mapping; fragile with dynamic data
Analytics & Monitoring
Centralized observability
Centralized observability
Minimal usage insights
Minimal usage insights
Developer-First SDK
Developer-First SDK
Connect to our hosted endpoint and focus on building, not infrastructure.
Context-Aware Execution
Context-Aware Execution
Same command, different systems. Fastn automatically routes your commands to the right service based on tenant configuration.
Same command, different systems. Fastn automatically routes your commands to the right service based on tenant configuration.
Tenant 1 uses Slack? Command goes to Slack.
Tenant 1 uses Slack? Command goes to Slack.
Tenant 1 uses Slack? Command goes to Slack.
Tenant 2 uses Microsoft Teams? Same command, different destination.
Tenant 2 uses Microsoft Teams? Same command, different destination.
Tenant 2 uses Microsoft Teams? Same command, different destination.
No rewrites, no conditionals, no headaches.
No rewrites, no conditionals, no headaches.
No rewrites, no conditionals, no headaches.
from fastn import FastnClient client1 = FastnClient( api_key="your_api_key", space_id="your_space_id", tenant_id="tenant 1" ) response = client1.execute_action( prompt="Send an alert to the team 🚀" )
→ Add a new tenant with different tools? No code changes needed.
client2 = FastnClient( api_key="your_api_key", space_id="your_space_id", tenant_id="tenant 2" ) response = client2.execute_action( prompt="Send an alert to the team 🚀" )
client2 = FastnClient( api_key="your_api_key", space_id="your_space_id", tenant_id="tenant 2" ) response = client2.execute_action( prompt="Send an alert to the team 🚀" )
Fastn UCL Architecture
AI Model / MCP Client
Standard MCP Interface
Standard MCP
No Multi-Tenant Support
Limited Connectivity
No Embedding Support
Tool Server
MCP Server
Fastn UCL
✓ Key Integration Points
AI Model / MCP Client
Uses UCL API/SDK
Tenant B
AI Model / MCP Client
Uses UCL API/SDK
Tenant C
AI Model / MCP Client
Uses UCL API/SDK
Embed Anywhere
Web Apps & Tools
UCL Command Layer
Identity & Auth
Tenant Context
Governance
Role-Based Access
Unified API
Developer SDKs
Embed Anywhere
MCP Server
Enterprise APIs
Databases
SaaS Tools
Custom Systems
Multi-Tenant
Universal Connectivity
Embeddable
Standard MCP
AI Model / MCP Client
Standard MCP Interface
Tool Server
MCP Server
No Multi-Tenant Support
Limited Connectivity
No Embedding Support
Fastn UCL
✓ Key Integration Points
AI Model / MCP Client
Uses UCL API/SDK
Tenant B
AI Model / MCP Client
Uses UCL API/SDK
Tenant C
AI Model / MCP Client
Uses UCL API/SDK
Embed Anywhere
Web Apps & Tools
UCL Command Layer
Identity & Auth
Tenant Context
Governance
Role-Based Access
Unified API
Developer SDKs
Embed Anywhere
Databases
Custom Systems
MCP Server
SaaS Tools
Enterprise APIs
Multi-Tenant
Universal Connectivity
Embeddable
AI Model / MCP Client
Standard MCP Interface
Standard MCP
No Multi-Tenant Support
Limited Connectivity
No Embedding Support
Tool Server
MCP Server
Fastn UCL
✓ Key Integration Points
AI Model / MCP Client
Uses UCL API/SDK
Tenant B
AI Model / MCP Client
Uses UCL API/SDK
Tenant C
AI Model / MCP Client
Uses UCL API/SDK
Embed Anywhere
Web Apps & Tools
UCL Command Layer
Identity & Auth
Tenant Context
Governance
Role-Based Access
Unified API
Developer SDKs
Embed Anywhere
MCP Server
SaaS Tools
Enterprise APIs
Custom Systems
Databases
Multi-Tenant
Universal Connectivity
Embeddable
Enterprise Security & Compliance
UCL is built to meet the most demanding enterprise security requirements.
Security Standards
Performance
Enterprise Support
Enterprise Security & Compliance
UCL is built to meet the most demanding enterprise security requirements.
Security Standards
Performance
Enterprise Support
Enterprise Security & Compliance
UCL is built to meet the most demanding enterprise security requirements.
Security Standards
Performance
Enterprise Support
Enterprise Security & Compliance
UCL is built to meet the most demanding enterprise security requirements.
Security Standards
Performance
Enterprise Support
Common Questions & Answers
Common Questions & Answers
Here’s everything you need to know about Fastn UCL, from features to getting started.
Here’s everything you need to know about Fastn UCL, from features to getting started.
What is Fastn UCL?
UCL stands for Unified Command Layer. It is a protocol-aware layer that provides a consistent interface for commanding any system. It routes commands based on tenant context with built-in authentication and observability.
What is MCP?
Is UCL secure?
How much does Fastn MCP cost?
Can I use Fastn MCP with any AI platform?
How fast can I get started?
Do I need to host my own MCP server?
Does Fastn provide SDKs or client libraries?
Can I test my tools before going live?
How does Fastn handle retries and timeouts?
Is there logging or observability for debugging?
Can I build custom tools on Fastn?
Can I control where my data is stored?
How do I support multiple tenants in my app?
Do I need to change my existing APIs to work with Fastn?
Can I connect to multiple MCP endpoints?
Can I simulate agent calls in development?
Does Fastn support streaming (SSE/Webhooks)?
How does the agent know which tool to call?
What types of tools can I register in Fastn?
What if a tool fails during execution?
Can I group tools by use case or app?
Can I control which agent can access which tools?
Can I disable or pause a tool without deleting it?
Can I track usage per agent or tool?
What is Fastn UCL?
UCL stands for Unified Command Layer. It is a protocol-aware layer that provides a consistent interface for commanding any system. It routes commands based on tenant context with built-in authentication and observability.
What is MCP?
Is UCL secure?
How much does Fastn MCP cost?
Can I use Fastn MCP with any AI platform?
How fast can I get started?
Do I need to host my own MCP server?
Does Fastn provide SDKs or client libraries?
Can I test my tools before going live?
How does Fastn handle retries and timeouts?
Is there logging or observability for debugging?
Can I build custom tools on Fastn?
Can I control where my data is stored?
How do I support multiple tenants in my app?
Do I need to change my existing APIs to work with Fastn?
Can I connect to multiple MCP endpoints?
Can I simulate agent calls in development?
Does Fastn support streaming (SSE/Webhooks)?
How does the agent know which tool to call?
What types of tools can I register in Fastn?
What if a tool fails during execution?
Can I group tools by use case or app?
Can I control which agent can access which tools?
Can I disable or pause a tool without deleting it?
Can I track usage per agent or tool?
What is Fastn UCL?
UCL stands for Unified Command Layer. It is a protocol-aware layer that provides a consistent interface for commanding any system. It routes commands based on tenant context with built-in authentication and observability.
What is MCP?
Is UCL secure?
How much does Fastn MCP cost?
Can I use Fastn MCP with any AI platform?
How fast can I get started?
Do I need to host my own MCP server?
Does Fastn provide SDKs or client libraries?
Can I test my tools before going live?
How does Fastn handle retries and timeouts?
Is there logging or observability for debugging?
Can I build custom tools on Fastn?
Can I control where my data is stored?
How do I support multiple tenants in my app?
Do I need to change my existing APIs to work with Fastn?
Can I connect to multiple MCP endpoints?
Can I simulate agent calls in development?
Does Fastn support streaming (SSE/Webhooks)?
How does the agent know which tool to call?
What types of tools can I register in Fastn?
What if a tool fails during execution?
Can I group tools by use case or app?
Can I control which agent can access which tools?
Can I disable or pause a tool without deleting it?
Can I track usage per agent or tool?
What is Fastn UCL?
UCL stands for Unified Command Layer. It is a protocol-aware layer that provides a consistent interface for commanding any system. It routes commands based on tenant context with built-in authentication and observability.
What is MCP?
Is UCL secure?
How much does Fastn MCP cost?
Can I use Fastn MCP with any AI platform?
How fast can I get started?
Do I need to host my own MCP server?
Does Fastn provide SDKs or client libraries?
Can I test my tools before going live?
How does Fastn handle retries and timeouts?
Is there logging or observability for debugging?
Can I build custom tools on Fastn?
Can I control where my data is stored?
How do I support multiple tenants in my app?
Do I need to change my existing APIs to work with Fastn?
Can I connect to multiple MCP endpoints?
Can I simulate agent calls in development?
Does Fastn support streaming (SSE/Webhooks)?
How does the agent know which tool to call?
What types of tools can I register in Fastn?
What if a tool fails during execution?
Can I group tools by use case or app?
Can I control which agent can access which tools?
Can I disable or pause a tool without deleting it?
Can I track usage per agent or tool?
Fastn.ai vs Traditional Solutions
How Fastn.ai compares to traditional solutions like Others
vs
Others
Multitenancy
Built-in, true multitenancy
White-labeling
Full brand control
Scalability
Enterprise-ready , any number of apps under one commad layer
SDK / Developer Tools
SDKs & APIs available
Enterprise Flexibility |
Dynamic schema adaptation with fallback strategies and mapping resolution
Analytics & Monitoring
Centralized observability
Fastn.ai vs Traditional Solutions
How Fastn.ai compares to traditional solutions like Others
vs
Others
Multitenancy
Built-in, true multitenancy
White-labeling
Full brand control
Scalability
Enterprise-ready , any number of apps under one commad layer
SDK / Developer Tools
SDKs & APIs available
Enterprise Flexibility |
Dynamic schema adaptation with fallback strategies and mapping resolution
Analytics & Monitoring
Centralized observability
fastn.ai
Copyright © 2025 Fastn, Inc.
fastn.ai
Copyright © 2025 Fastn, Inc.
Copyright © 2024 Fastn, Inc.
Copyright © 2024 Fastn, Inc.