Interactive worlds for people and AI to build, learn and solve problems together
Tamper-evident audit trail for AI agents with verifiable records
Stage
Not given
Not given
Founded
Not given
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Based in
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GB
Pricing model
Free
Freemium
Pricing
Not given
Free: £0, no card required, 1 user, 25,000 live records a month. Solo: £19/month or £190/year, 1 user, 100,000 live records a month (then £5 per 100,000). Team: £49/month or £490/year, unlimited users with roles, 250,000 live records a month (then £5 per 100,000, or £3 above 10 million). Enterprise:
Key features
Photo to brick set conversion with 3D preview and parts list
Workbench for collaborative brick-by-brick editing
MCP server integration with Claude Code, Codex, Cursor and more
Build structure checking and validation
OAuth sign-in with no token storage
Offline build access with local browser storage
Export digital manuals and wanted parts lists
Interactive environments for AI training
Consent-based human demonstration recording
Agent signs each record with its own Ed25519 key
Service co-signs records and chains them to prevent edits or gaps
Public timestamp bounds each record with hourly verification
Only salted hashes sent to service; inputs and outputs stay on your machine
Open verifier code allows independent verification
Python and TypeScript SDKs for wrapping agent tools
Verification reports in HTML or PDF format with compliance mapping
Compliance packs for EU AI Act, ISO/IEC 42001 and SOC 2
99.5% uptime guarantee on hosted witness in Google Cloud London
What makes it different
Checked outcomes - part connections and build validity are verified by software before delivery
Real objects from photos - converts pictures into buildable brick sets with actual parts that exist
People and AI work on the same design simultaneously within the workbench
Measurable AI learning with transfer testing across different worlds
Records are verifiable offline and survive service shutdown
Independent co-signature and public time bounds provide proof beyond your control
Content remains private on your machine in hash-only mode
Compliance-ready evidence for regulators and auditors
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