Tamper-evident audit trail for AI agents with verifiable records
An HTTP document search API for your apps
Stage
Not given
Not given
Founded
Not given
Not given
Based in
GB
US
Pricing model
Freemium
Open source
Pricing
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:
Not given
Key features
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
Search passages that match a query with scores and file references
Manage collections and add or remove documents over HTTP or web interface
Share vaults and partitions for search-only access
API keys with read, write or admin access levels
Web interface for search and administration
User account management with three access levels
Full-text and vector search indexes
Runs locally on 127.0.0.1 with no outgoing connections
SHA-256 hashed API keys and scrypt hashed passwords
Limit lists restrict collections and vaults per user or API key
What makes it different
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
Runs entirely locally on your computer with no outgoing connections
Free and open source with MIT license
Does not write answers or contain a language model
Shared vaults and partitions are search-only and cannot be modified
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ModelBrain RAG