Redact
Your application sends text or JSON to Zero Node before calling an external model.
[email protected] → <EMAIL_1>
Redact sensitive data before it reaches AI models.
Zero Node detects and replaces sensitive data before your application sends it to LLMs, logs, analytics, or third-party APIs. Restore authorized values afterward without exposing the originals to the model provider.
How it works
Your application keeps control of the real values.
Zero Node sits between your application and the external model. The model receives useful context, not the original sensitive data.
Call the model
The LLM works with safe, stable tokens and never needs the original customer value.
Prompt contains <EMAIL_1>
Rehydrate
Your authorized application restores tokens with the short-lived, single-use session.
<EMAIL_1> → authorized value
A focused privacy boundary for AI applications
Practical controls for developers who need to reduce sensitive-data exposure without breaking application workflows
No Persistent Content Store
The token↔original mapping lives in memory (or Redis) for a few minutes, never on disk, and is deleted the moment you rehydrate.
Real Detection, Not Guesswork
Email, phone, SSN, cards, IPv4/IPv6, addresses, API and URL secrets, IBAN, birth date, passport, tax, and medical IDs. Cards and IBANs receive checksum validation; contextual IDs require nearby labels.
Sanitize → Rehydrate
Redact before you call any LLM, send the tokenized text, then rehydrate the reply locally. The mapping is single-use — consumed on first rehydrate.
Built to Scale Out
Sessions, rate limits, and quotas run through a shared store — point it at Redis and add replicas behind a load balancer with no code changes.
Lightweight
The API ships as a static Go binary in a minimal container, with separate private Redis and local-model services. Simple to self-host and inspect.
Simple API
Redact plain text or nested JSON, choose token, mask, remove, hash, pseudonym, or partial replacement, and rehydrate token-mode sessions once.
Try It Live
Paste synthetic text below — the application does not log it or create a reversible session. Public demo, rate-limited to prevent abuse.
No API key needed
Request
// POST /api/v1/demo/redact (no auth) { "text": "Contact support at [email protected] or 555-123-4567" }
Response
{
"redacted": "Contact support at <EMAIL_1> or <PHONE_1>",
"findings": [
{"type": "EMAIL", "confidence": 0.98},
{"type": "PHONE", "confidence": 0.85}
]
}
The demo uses the complete engine but creates no reversible session. Contextual PERSON, ORGANIZATION, and LOCATION detection is beta and can produce misses or false positives. Review supported formats, limits, and integration examples in the developer documentation.
Developer Quick Start
Protect a prompt with one API call.
Use the production endpoint with your beta API key. Token mode returns a short-lived session for authorized rehydration.
curl -X POST https://zero-node.com/api/v1/redact \
-H "X-API-Key: YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{
"text": "Email Jane at [email protected]",
"options": {
"replacement_mode": "token"
}
}'Simple early-access pricing
Start with one AI workflow. Beta keys are provisioned manually, and we confirm coverage and limits before activation.
Developer · Bronze
Free
- 1,000 requests/day
- Text and structured JSON
- Email and phone protection
- Public playground and email support
For first integrations
Launch · Silver
$29/month
- 10,000 requests/day
- Text, JSON, and reversible sessions
- Contact, SSN, and payment-card protection
- Priority beta support
Scale · Gold
$99/month
- No daily key quota; abuse safeguards apply
- Complete deterministic coverage
- Beta person, organization, and location detection
- Request-scoped custom patterns
- Dedicated beta support
Plans differ by volume, support, and available coverage during beta. Review the exact detector boundaries in Detection Coverage before choosing a plan.