Observed arrival · 2026-09-21
suss explains what your code does
A deterministic behavioral-analysis tool for TypeScript, Python, and Ruby that describes code paths and checks boundaries against clients, specs, and infrastructure.
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●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Engineers reviewing API and data-boundary changes
- Worth noticing
- The example identifies a removed `placedAt` field from a successful `/orders/{reference}` response.
Field notes
The tool organizes analysis around boundaries, summaries, checks, and packs. Its example compares the behavior of `GET /orders/{reference}` before and after a change, then identifies a missing `placedAt` field in the success body. Packs cover framework and ORM-specific reading, with TypeScript described as the most complete language path; Python and Ruby support is narrower.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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