RPAComparisonAI Vision

AS/400 (IBM i) RPA Alternative

Traditional RPA tools were designed for Windows desktop automation - recording mouse clicks and keystrokes on GUI applications. They struggle with AS/400 (IBM i) green screens. legacy bridge takes a fundamentally different approach: AI vision that understands screen content, connected via native TN5250.

legacy bridge vs traditional RPA

legacy bridge
Traditional RPA
Installation
Yes

Zero - cloud-based, connects via TN5250

No

Desktop agents on every workstation

Screen interaction
Yes

Native TN5250 protocol - structured field access

No

Screen scraping - pixel coordinates

Screen changes
Yes

AI adapts to layout variations automatically

No

Scripts break, require manual updates

Document processing
Yes

Built-in AI vision reads any document format

No

Separate OCR tool required

AS/400 (IBM i) expertise needed
Yes

No - legacy bridge handles navigation

No

Yes - must script every screen path

Error handling
Yes

AI interprets error messages, self-corrects

No

Predefined error rules, fails on unknowns

Maintenance
Yes

Self-improving - learns from corrections

No

Ongoing script maintenance required

Audit trail
Yes

SHA-256 cryptographic hash chain

No

Log files (mutable, unverifiable)

Why traditional RPA struggles with AS/400 (IBM i)

Coordinate-based automation is fragile

RPA tools locate fields by screen coordinates. When your AS/400 (IBM i) application displays a slightly different screen - a new field added, a message line shifted - the automation breaks. legacy bridge reads screen content semantically, finding fields by label text, not pixel position.

Desktop agents don't scale

Traditional RPA requires a desktop agent running a terminal emulator on a virtual machine. Each "robot" needs its own VM, emulator license, and maintenance. legacy bridge runs in the cloud with direct TN5250 connections - no VMs, no emulators, no desktop overhead.

Script maintenance is a full-time job

RPA scripts are rigid sequences that must be manually updated whenever a screen changes. Organizations often need dedicated RPA developers just to maintain existing automations. legacy bridge's AI agents adapt to screen variations without code changes.

Switching from RPA to legacy bridge

legacy bridge can run alongside your existing RPA tools during migration. Start with one workflow, validate the results, and expand at your own pace. Most organizations see their first workflow automated within a single day.

  • No disruption to existing automations during transition
  • Same AS/400 (IBM i) user profiles and security model
  • Immediate reduction in maintenance overhead
  • Full audit trail from day one

See the Difference

Compare legacy bridge side-by-side with your current RPA tool on the same AS/400 (IBM i) workflow.

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The legacy bridge team at work

More use cases

TN5250 Terminal Automation

Programmatically navigate AS/400 (IBM i) green screen menus, enter data, and submit transactions through the standard TN5250 protocol.

TN5250TerminalProtocol

AI Vision Automation

How AI vision understands both documents and green screens - replacing OCR templates and coordinate-based scripts with intelligent automation.

AI VisionComputer VisionIDP

AS/400 (IBM i) Data Entry Automation

Eliminate manual green screen typing. AI reads documents and enters data into AS/400 (IBM i) terminals autonomously via TN5250.

Data EntryGreen ScreenAI Vision