Built on top of T3 Code
Bring collaborators into your coding agent
Coretecks turns a solo T3 Code session into a shared workspace. Share a thread, invite a collaborator with a link, and work the same thread together while presence, selections and mouse pointers stay in sync.
About
A shared workspace, not a second tool
Coretecks is two things in order: the agent you already use, and a collaboration layer on top of it.
Built on top of T3 Code
Coretecks is built on top of T3 Code and keeps the agent you already work in. Nothing about the way you prompt, review or run a turn changes. Coretecks adds the layer T3 Code has no concept of: other people in the same thread at the same time.
The collaboration layer is a separate service, so your agent keeps working exactly as it does today when nobody else is in the thread.
What Coretecks adds
Shared threads
Share a single thread instead of pasting transcripts. Everyone you share with sees the same conversation, the same pending turn and the same attachments, and a fresh joiner is caught up from a snapshot rather than from scrollback.
Real collaborators, invited by link
Send an invite link or invite a known collaborator directly. Invites can be accepted, declined or revoked, so access to a thread is a decision you can take back rather than a URL that leaks forever.
Live presence and thread awareness
See who is in a thread right now, who is typing in the composer, and what they have selected in the conversation. Awareness travels as fixed-size hashes and offsets, never as the selected text itself.
Live mouse pointers
Each collaborator's cursor is drawn where they are actually pointing, anchored to the message row under it, so a pointer keeps its meaning even when two windows are scrolled to different places.
Security and data privacy
Collaboration means your work crosses a network, so the boundaries are worth stating plainly rather than in the abstract.
- Encrypted in transit
- Every request and every socket runs over TLS. There is no unencrypted transport.
- Authorization checked on every request
- Identity is verified per request against Clerk, and a realtime socket opens only with a single-use ticket. Access to a thread is re-derived from your grants, never assumed from a previous call.
- Relay payloads pass through unread
- Thread snapshots and event batches are opaque to the relay. It correlates them to the right recipients and forwards them, and no server logic depends on what is inside.
- Minimal retention
- Presence, awareness and pointer positions are ephemeral: they are relayed and never stored. Selected text and rendered HTML never leave your machine, and abuse counters record only which connection and which thread, never content.
Walkthrough
See it in a thread
A short walkthrough of sharing a thread, inviting a collaborator and watching awareness and pointers move. The recording is being cut now, and this space is already reserved at its final size so nothing on the page will move when it lands.
Coming soonPlans
Pricing
One number for individuals, and a conversation for everyone with a procurement process. Free and Pro open together with accounts.
Free
Free
Try shared threads with one other person.
- 1 shared thread
- 1 collaborator
Available when accounts open.
Pro
Most popular$20/month
For anyone who works in shared threads every day.
- Unlimited shared threads
- Unlimited collaborators
Checkout is not open yet.
Enterprise
Contact for pricing
For teams with procurement, audit and hosting requirements.
- Unlimited shared threads
- Unlimited collaborators
- SOC 2 data controls
- Priority support
- On premise hosting
Prices are in US dollars, excluding any applicable tax.
Desktop
Download
Desktop builds are not published yet. All four targets are listed so you can see exactly what the first release will cover.
No release yet. Downloads turn on with the first public build.
Windows
.exe x64
macOS Apple Silicon
.dmg arm64
macOS Intel
.dmg x64
Linux
.AppImage x64
Billing
Subscribe
Paid plans are not open yet. Checkout will live in the Coretecks dashboard, and this section becomes the way in the moment it does.
Checkout is not open yet. Enterprise enquiries are answered today.
Talk to us instead