Transect: MIT UK AISI eval timelines
Transect is a UK AISI tool that turns long agent eval transcripts into turn-indexed timeline reports. MIT licensed and open source.
Key features
- Extracts token use, compactions, interventions, and sub-agent events
- Classifies phases and sub-agents from a vocabulary you supply
- Attaches provenance and reliability data to every classification
- Places each run on a navigable turn-based timeline
- Returns results as an HTML report and pandas dataframes
- Category
- Dev Tools
- Who it's for
- Reviewers analyzing long-horizon agent evaluation transcripts.
- Tags
- evalsagentspythonvoice-speech
- Website
- github.com
- Listed
- 2026-10-14
Frequently asked questions
Is Transect free?
Yes. Transect is open source and free to use.
What is Transect used for?
UK AISI tool that turns long agent eval transcripts into interactive turn-indexed timeline reports. MIT. Typical uses: extracts token use, compactions, interventions, and sub-agent events; classifies phases and sub-agents from a vocabulary you supply; attaches provenance and reliability data to every classification.
What are the best Transect alternatives?
Alternatives in the same category include open_scion, SkillSpector, Agent Toolkit for AWS, DigUp, FluidVoice.
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