Product
Shared memory your team can verify.
Capture project work, review what should become trusted knowledge, and retrieve relevant context across people and AI tools without sharing raw transcripts.
Team memory
Every developer contributes. The project remembers.
Developers keep using their chosen tools. Explicitly captured project sessions become private sources and review proposals; approved outcomes become structured project knowledge.
A session becomes
- Completed work
- Decisions
- Tasks
- Ideas
- Blockers
- Context
Raw conversation is the input, not the product. What the project keeps is what happened to the project.
Capture where work happened
Configured Claude Code, Codex and Companion workflows can associate work with the same project.
Review before reuse
Classification proposes decisions, tasks, ideas and blockers; authorized reviewers decide what enters memory.
One reviewed project record
Authorized teammates and later agents retrieve approved knowledge without opening private transcripts.
Privacy by boundary
Share the knowledge, not the private transcript.
A team can reuse approved project knowledge without opening every contributor's raw AI conversation. Organization, project and role checks apply before context is retrieved.
- Contributor's raw transcriptPrivate to its owner
- Rejected review proposalNot project memory
- Approved project knowledgeShared within project access
- Bounded repository evidenceShared within project access
Project association never grants access to another contributor's raw transcript. How data is handled.
Provenance
Every decision has a trail.
A record that only states a conclusion asks to be taken on faith. ReasonTrail keeps what the conclusion came from, so a reviewer can follow it back.
Session tokens are stored hashed, never in plaintext
- Source
- Codex session · 24 Aug
- Evidence
- auth/session.ts · review thread
- Related task
- RT-112 — Harden session storage
- Status
- Approved by reviewer
Illustrative decision record.
Verified before remembered.
What a session proposes is reviewable before it becomes the project's record.
Context
Retrieve what the current task needs.
A client asking about one part of a project does not need the entire project history. ReasonTrail assembles a bounded, authorized slice and preserves its sources and revision context.
Relevant
Scoped to the task at hand rather than the whole history.
Bounded
Assembled to a budget, with truncation and coverage made visible.
Traceable
Every item cites the source it came from.
Versioned
Tied to a specific revision, so an answer is reproducible.
Bounded retrieval is verified; token savings are not established. The method is on the evaluation page.
Capabilities and availability
- 01Available
Project workspaces
Organize conversations, tasks, decisions, blockers, ideas, and resources around durable project context.
- 02Available
Conversation imports
Capture pasted conversations and supported shared ChatGPT or Claude links with provenance.
- 03Available
Context Engine
Select and rank bounded evidence before a configured provider is invoked.
- 04Available
Brain search and Ask
Retrieve across project memory and produce answers that remain inspectable.
- 05Available
Decisions and trails
Connect decisions to supporting sources, assumptions, owners, approvals, and related work.
- 06Available on web
Review queues
Approve, edit, reject, archive, or delete proposed memory changes.
- 07Available
Knowledge graph
Explore relationships among project objects without replacing the underlying record.
- 08Available
Router AI
Choose among configured providers while keeping credentials server-side.
- 09Available
Email capture
Bring relevant project messages into an inbox for classification and review.
- 10Controlled preview
Operator
Run limited task-status actions through plan, execute, verify, and memory-update stages.
- 11Production
MCP
Connect compatible AI clients through authenticated Cloud MCP or local stdio, with scoped tools and preserved provenance.
- 12Available
Exports and backups
Export project data to JSON or Markdown and operate documented backups.
- 13Developer preview
Mac Companion
Capture activity and access ReasonTrail from Apple-silicon Macs.