Build and deploy AI agents in 5 lines of code.
Custodian Labs takes you from idea to deployed, production-grade AI agent — with privacy built in at every layer. No infrastructure. No data leakage.
Everything you need. Nothing you don't.

Guardian layer
The proprietary Guardian Layer is the guardrail that detects PII and puts you in control of how it's handled before it reaches any model.

RAG out of the box
Give your agent long-term memory and document retrieval without configuring embeddings or vector DBs. Add a knowledge base in one line and it just works.

Model-agnostic
Switch between OpenAI, Anthropic, Mistral, or local models with one line — no vendor lock-in, no rewrite required. Your agent logic stays exactly as it is; only the model underneath changes.
Zero infrastructure
No database to provision, no vector store to connect, no hosting to manage. Custodian abstracts every layer beneath your agent so you focus entirely on logic.
Research-grade foundations
Commercialised with AUT Ventures and New Zealand Government funding. Production reliability grounded in deep academic research.
No databse. No hosting. Just deploy.
Normally you'd provision a vector DB, set up a hosting environment, wire up your model provider, write retry logic, handle streaming — all before writing a single line of agent logic. Custodian collapses that entire stack to a function call.
Assemble your team. Deploy as one.
Introducing the Guardian Layer
Most privacy solutions simply strip PII — but stripping context destroys AI accuracy. The Guardian Layer detects PII intelligently, then gives you full control over what happens next, without the original PII ever leaving your envionrment.
Custom PII entities


Input (raw)
Sent to AI model
Detection report
Person
James Harrington99%Email
james@acmecorp.com100%Currency
$240,00097%Org
acmecorp88%

Transform
Replaces personally identifiable information (PII) with synthetic equivalents that preserve meaning

Mask / redact
Replaces personally identifiable information (PII) with a typed label — the fastest and most conservative transform

Detect only
Only surface what Replaces personally identifiable information (PII) exists, without modifying any text
Input (raw)
Sent to AI model
Detection report
Person
James HarringtonEmail
james@acmecorp.comCurrency
$240,000Org
acmecorp

Simple, transparent pricing
Basic
Sandbox, try it out free
- 100k tokens
- 1k requests
- GPT-4o
- Email and community support
Starter
For users who want more limits, priority access, and VIP support
- 1m tokens
- 10k requests
- All models + newest first
- Priority 24/7 support
- Direct roadmap input
- Monthly 1:1 product call
- Free compliance assessment
Custom
Everything tailored to your stack and compliance needs
- Custom token limit
- Custom request limit
- On-premise or private cloud
- Offline deployments
- Custom compliance & data contracts
- Dedicated support & SLA
From idea to deployed.
In under 10 minutes.
Get an API key, install the SDK, and have a privacy-safe AI agent running in production — no infrastructure required.