Phileas

Anatomy of Phileas

Phileas runs inside your application's process. The host code calls a single filter(text) entry point; the library reads a policy file and an optional NLP lens, then routes the text through three internal layers before returning redacted output. No network hop, no service to deploy, no data egress.

Code samples

Phileas exposes the same redaction surface across languages. The minimal “load a policy, redact one document” flow looks like this in each. The healthcare.json referenced below is a Phileas redaction policy: download a ready-made policy from the policy library or write your own, then point the code at it.

Java is the reference implementation. New features and entity types land in the Java library first; the Python and .NET libraries track its API surface and feature set as it evolves.

<!-- pom.xml -->
<dependency>
    <groupId>ai.philterd</groupId>
    <artifactId>phileas</artifactId>
    <version>4.0.0</version>
</dependency>

// Then, in your application:
import ai.philterd.phileas.Phileas;
import ai.philterd.phileas.model.policy.Policy;

// Load the policy that defines which entities to redact and how.
Policy policy = Policy.fromFile("healthcare.json");

// Initialize Phileas with the policy.
Phileas phileas = new Phileas(policy);

// Redact a single document.
String text = "Patient John Doe SSN 123-45-6789.";
String redacted = phileas.filter(text).getText();

System.out.println(redacted);
// -> Patient ******** SSN ***********.

from phileas import Phileas

# Load the policy that defines which entities to redact and how.
ph = Phileas(policy="healthcare.json")

# Redact a single document.
result = ph.filter("Patient John Doe SSN 123-45-6789.")

print(result.text)
# -> Patient ******** SSN ***********.

using Phileas;
using Phileas.Model;

// Load the policy that defines which entities to redact and how.
var policy = Policy.FromFile("healthcare.json");

// Initialize Phileas with the policy.
var phileas = new Phileas(policy);

// Redact a single document.
var result = phileas.Filter("Patient John Doe SSN 123-45-6789.");

Console.WriteLine(result.Text);
// -> Patient ******** SSN ***********.