Connect/3270Native
z/OS
Architecture
Zero
Web 3270 Client
Software
API
for 3270
Scripting & Automation
Agentic
Powered by
REST API
SAF
Access
Control
Connect/3270 enables secure browser-based access to 3270 applications — TSO, ISPF, SDSF, CICS, or any other green-screen application — nothing to install, no middleware server requirement, runs natively on z/OS with full TN3270E protocol support.
On the Mainframe
3270
Why Connect/3270
Access from any browser, anywhere
Secure 3270 emulation with no client software, no plugins, no desktop emulator licenses
Native z/OS - no middleware server requirement
Connect/3270 runs directly on the mainframe, removing the requirement for extra servers and network hops
Fewer moving parts, fewer failures
On-platform architecture eliminates the gateways and proxy layers that cause outages
Lower latency where it matters
No off-platform gateway in the data path — the shortest possible route for screen transactions
Simplify your emulation estate
Replace fragmented desktop emulators and external gateways with a single managed capability
Deploy Where Your Environment Allows
Native on z/OS by default — or as a server configuration on Linux x86, Windows, or macOS when you don't control the LPAR
MCP API & Scripting
Structured screen data as JSON — for AI inference, agents, and automation
Operationalize 3270 data
Screen content returned as structured data — accessible to any MCP-capable client, not just people
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Connect/AI brings the z/OS-native agent to Connect/3270’s MCP API — mining that same live screen data, reasoning over it using your choice of mainframe-resident, local, or external model such as Claude, OpenAI, or Grok, and planning and driving multi-step workflows with your approval gating every write — extracting buried business intelligence along the way. Learn about Connect/AI ›
Unlocked with Connect/AI
Feed live 3270 screen data straight into z/OS-native AI inference
Interactive AI Workspace
Live 3270 screen data — queryable and agentic in your browser
Institutional knowledge, without the scripting
An analyst drives 3270 workflows conversationally in the Interactive Workspace — no REXX or Python required
Reduce modernization risk
Automate and augment legacy 3270 applications in place — no migration required
Designed for the AI era
Native z/OS integration that speaks both the terminal language and modern AI inference
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Connect/MP › Connect/3270
Architecture & Deployment
Zero external infrastructure
Can be run entirely on z/OS — no middleware servers, no additional latency, no extra points of failure.
No clients or plugins
Browser-based access. Zero installation or plugin management for end users.
Minimal attack surface
No external components means no external exposure. Security perimeter stays on the mainframe.
Security
System SSL encryption
3270 sessions can be secured using z/OS System SSL (OpenSSL on other supported platforms).
Native access control
Fully SAF-compliant — inherits z/OS security and access control without additional configuration.
MCP API & Automation
Scriptable from anywhere
Callable from REXX, Python, external AI agents, and Connect/AI to automate 3270 workflows.
AI inference on screen data
Expose terminal screen content to external AI agents and Connect/AI for intelligent processing, summarization, or decision-making.
3270 Emulation
TN3270E support
Full TN3270E protocol for device-type negotiation and enhanced session control.
Terminal model support
Mod 2 - Mod 5, extended color, and extended highlighting.
Concurrent users
Supports multiple simultaneous user sessions from any standard web browser.
Script recording
Record & playback for 3270 workflows — no scripting expertise required.
Customizable landing page
Tailor the user-facing entry point to your environment and branding.
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