Gather
- →Pull specs and sources
- →Stage work for the next agent
Agent A→
The multi-agent sandbox
Every agent runs isolated. The whole fleet shares one workspace — handoffs are instant, glue code is gone.
- Multi-agent sandbox
- Agents that share work
- Isolated by default
- Clean handoffs
- Fleets that collaborate
- One workspace, many agents
- Work that survives
- Built for production
Start building for free.
Create an account and spin up your first multi-agent sandbox — isolated agents, one shared workspace.
Multi-agent sandboxes
for real teams
Factory
Build, test, and ship with agents that pass work cleanly — each step isolated, everything shared where it should be.
Build
- →Generate and assemble
- →Hand off to the next agent
Agent B→
Test
- →Verify in isolation
- →Share results with the fleet
Agent C→
Ship
- →Package the release
- →Keep a clear trail
Agent D→
Gather
- →Pull specs and sources
- →Stage work for the next agent
Agent A→
Build
- →Generate and assemble
- →Hand off to the next agent
Agent B→
Test
- →Verify in isolation
- →Share results with the fleet
Agent C→
Ship
- →Package the release
- →Keep a clear trail
Agent D→
Reproduce, patch, and test — each agent in its own sandbox, review packs ready for the next teammate.
Reproduce
- →Capture the failure
- →Share context with the fleet
Agent→
Patch
- →Apply the fix safely
- →Leave a clear diff
Agent→
Test
- →Validate in isolation
- →Publish what passed
Agent→
Review
- →Assemble the pack
- →Work survives when agents stop
Shared→
Reproduce
- →Capture the failure
- →Share context with the fleet
Agent→
Patch
- →Apply the fix safely
- →Leave a clear diff
Agent→
Test
- →Validate in isolation
- →Publish what passed
Agent→
Review
- →Assemble the pack
- →Work survives when agents stop
Shared→
Scout agents fan out in parallel; a synthesizer pulls everything together from the same workspace.
Scout
- →Explore in parallel
- →Drop findings into one place
Many agents→
Synthesize
- →Read every finding
- →Draft the brief
One agent→
Cite
- →Keep sources linked
- →Stay trustworthy
Shared→
Handoff
- →Agents see each other’s work
- →Retry without starting over
Reliable→
Scout
- →Explore in parallel
- →Drop findings into one place
Many agents→
Synthesize
- →Read every finding
- →Draft the brief
One agent→
Cite
- →Keep sources linked
- →Stay trustworthy
Shared→
Handoff
- →Agents see each other’s work
- →Retry without starting over
Reliable→
Coordinate whole fleets — each agent isolated, the whole group collaborating in one workspace.
Fleet workspace
Soon- →Spin up the room
- →Keep teams separated
Ready→
Launch fleet
Soon- →Start every agent
- →Share one workspace
Ready→
Agent tools
Soon- →Agents run themselves
- →Same place to operate
Ready→
Fleet trail
Soon- →See every handoff
- →Know who did what
Soon→
Fleet workspace
Soon- →Spin up the room
- →Keep teams separated
Ready→
Launch fleet
Soon- →Start every agent
- →Share one workspace
Ready→
Agent tools
Soon- →Agents run themselves
- →Same place to operate
Ready→
Fleet trail
Soon- →See every handoff
- →Know who did what
Soon→
One room. Many agents. One workspace.
Launch agent A, leave work for agent B, keep going. Stop the agents — the work remains. That’s the multi-agent sandbox.
Many agents. One workspace.
Isolate
Every agent runs in its own sandbox. Risky work stays contained — your host and other agents stay protected.
True isolation
Each agent gets a private sandbox — not a shared container soup.
Ready→
Contained risk
Untrusted output stays inside the sandbox boundary.
Ready→
Locked down
Agents don’t wander the open internet by default.
Ready→
Fair limits
Keep fleets from runaway spend and runaway scale.
Coming soon→
True isolation
Each agent gets a private sandbox — not a shared container soup.
Ready→
Contained risk
Untrusted output stays inside the sandbox boundary.
Ready→
Locked down
Agents don’t wander the open internet by default.
Ready→
Fair limits
Keep fleets from runaway spend and runaway scale.
Coming soon→
The reason multi-agent systems finally work: one durable workspace every agent can read and write.
Instant handoffs
Agent A writes. Agent B reads. No custom glue.
Ready→
Work that lasts
Stop an agent — the files remain for the next one.
Ready→
Parallel fleets
Many agents write at once without stepping on each other.
Ready→
Fast collaboration
Handoffs measured so you know agents stay in sync.
Coming soon→
Instant handoffs
Agent A writes. Agent B reads. No custom glue.
Ready→
Work that lasts
Stop an agent — the files remain for the next one.
Ready→
Parallel fleets
Many agents write at once without stepping on each other.
Ready→
Fast collaboration
Handoffs measured so you know agents stay in sync.
Coming soon→
Lifecycle latency that keeps fleets moving — create, wake, and first exec measured against a live peer sandbox.
Start ~594 ms
Peer sandbox ~1293 ms — about 2.2× faster on the same clock.
Ready→
Resume ~4 ms
Standby wake — back in without a cold create.
Ready→
First exec ~253 ms
Peer sandbox ~416 ms on the product path.
Ready→
16 agents / room
Room fill green — create 503 rate 0 under load.
Ready→
Start ~594 ms
Peer sandbox ~1293 ms — about 2.2× faster on the same clock.
Ready→
Resume ~4 ms
Standby wake — back in without a cold create.
Ready→
First exec ~253 ms
Peer sandbox ~416 ms on the product path.
Ready→
16 agents / room
Room fill green — create 503 rate 0 under load.
Ready→
Stand up rooms, launch agents, and watch the trail — from your stack or from agent tools.
Simple API
Create rooms, launch agents, run work, read results.
Ready→
Agent-native
Your agents can operate the sandbox themselves.
Ready→
Full trail
See launches, handoffs, and finishes across the fleet.
Ready→
Proof, not hype
Create, resume, and first exec measured on the landing.
Ready→
Simple API
Create rooms, launch agents, run work, read results.
Ready→
Agent-native
Your agents can operate the sandbox themselves.
Ready→
Full trail
See launches, handoffs, and finishes across the fleet.
Ready→
Proof, not hype
Create, resume, and first exec measured on the landing.
Ready→
Measured lifecycle
Create, resume, and first exec — p50 on public HTTPS vs a live peer sandbox (measured side-by-side).
Create
~594 ms
~2.2× faster
- Fystash
- ~594 ms
- Peer sandbox
- ~1293 ms
Resume
~4 ms
Standby wake
- Fystash
- ~4 ms
- Peer sandbox
- —
First exec
~253 ms
~1.6× faster
- Fystash
- ~253 ms
- Peer sandbox
- ~416 ms
Start. Stop. Keep going.
Lifecycle that matches how fleets actually run — wake fast, fill a room, leave work behind.
Resume
~4 ms
Standby wake — start again without a cold create.
Room fill
16 agents
One room filled via from-template · create 503 rate 0.
Stop
Work stays
Stop the agents — Drive keeps the files for the next one.
Concurrent
16
Free and Starter soft cap — same concurrent sandbox budget.
Ready for a real multi-agent sandbox?
Not a single-agent playground — fleets that collaborate safely, with handoffs you can trust.