SWIFT Message Viewer
A VS Code extension that parses SWIFT MT messages and presents them in a human-readable, editable table view with real-time validation.
Features
- Table view — opens
.mt and .swift files in a structured, readable table layout
- Inline editing — edit tag values directly in the table; changes sync back to the source file
- Real-time validation — structural, tag-level, and value-level validation with error/warning indicators
- Reference regeneration — regenerate reference fields automatically
- Command Palette support — open the viewer for any file via
Swift Message: Open Viewer
Supported Message Types
| Type |
Description |
| MT101 |
Request for Transfer |
| MT541 |
Receive Against Payment |
| MT910 |
Confirmation of Credit |
| MT940 |
Customer Statement Message |
| MT942 |
Interim Transaction Report |
Usage
- Open a
.mt or .swift file — the viewer activates automatically
- Or run Swift Message: Open Viewer from the Command Palette (
Ctrl+Shift+P) on any file
- Edit tag values inline in the table
- Validation runs automatically on open and after each edit (500ms debounce)
- Run Swift Message: Validate manually from the Command Palette at any time
Keybindings
Ctrl+Shift+M (Mac: Cmd+Shift+M) — Open ViewerCtrl+Shift+V (Mac: Cmd+Shift+V) — Manual Validation
Validation
The extension validates messages at three levels:
- Structural — block delimiters, Block 4 terminator (
-}), tag syntax
- Tag-level — mandatory/optional tags per MT type, sequence rules
- Value-level — field format checks (length, character set, date/amount formats)
Errors and warnings are shown in a banner at the top of the viewer and highlighted inline.
Requirements
Extension Settings
This extension does not contribute any configurable settings.
Release Notes
0.1.0
Initial release with support for MT101, MT541, MT910, MT940, and MT942 message types.
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