Philter on a cloud marketplace
One-click into your own VPC. $0.49/hour on AWS Marketplace; same shape on GCP and Azure.
For developers
Build with the Philter PII redaction API and SDKs
Self-host the open source Philter redaction API, drop the Java SDK into your app or call it from any language via the OpenAPI spec, and deploy from Docker or your cloud marketplace.
Deploy
From zero to a running redaction service in minutes.
Arbiter via Docker
Human-in-the-loop review surface. Pulls down and runs locally in seconds.
$ docker pull philterd/arbiter:latest
$ docker run -p 8080:8080 philterd/arbiter:latest
# open http://localhost:8080From source
All projects are Apache 2.0. Clone, build, run.
$ git clone https://github.com/philterd/philter
$ cd philter && ./mvnw spring-boot:runEmbed in your own code
Client libraries that talk to Philter, plus the Phileas redaction library you can embed directly. See full SDK details →
Philter SDKs
Talk to a running Philter instance from your application.
Phileas (embedded library)
The redaction engine itself, embedded directly in your process.
Tools by job
Pick the right project for the problem you're trying to solve.
- Redact text in a pipeline
- Philter →
- Embed redaction in your own code
- Phileas →
- Find PII across files and storage
- Phinder →
- Monitor PII flow and get paged on anomalies
- Phield →
- Redact prompts before they hit OpenAI / Anthropic
- Philter AI Proxy →
- Redact PII before sending to an LLM (chat, RAG, agents)
- Redact PII in RAG and agent pipelines →
- Human review of automated detections
- Arbiter →
- Score a redaction policy on precision and recall
- Philter Scope →
- Run safe aggregate analytics over PII counts
- Philter Diffuse →
- Get the AI / NLP models that detect entities
- PhEye →
- Author and edit policies visually
- Redaction Policy Editor →
Read the code
All projects available under github.com/philterd.
Redaction API
Java
Philter
Turnkey, self-hosted PII redaction with a clean API. Drops into any pipeline that needs sensitive data removed from text, and runs entirely inside your cloud.
Star 42Redaction Library
JavaPython.NET
Phileas
The core redaction, anonymization, masking, and replacement library underneath Philter. Available in Java, Python, and .NET.
Star 99AI Models & Server
Python
PhEye
The trained AI and NLP models that find PII and PHI in text, plus the service that hosts them. Designed to plug directly into Phileas and Philter.
Star 1Discovery
Java
Phinder
High-speed discovery scanner that crawls files and storage to map where sensitive information actually lives across your environment.
Star 1Monitoring
Go
Phield
Intelligent monitoring that tracks PII flow across the organization and alerts on suspicious activity or unusual trends.
Star 2LLM proxy
Go
Philter AI Proxy
Drop-in proxy that redacts PII and PHI before prompts reach LLM providers like OpenAI and Anthropic Claude.
Star 2MCP server
Python
Philter MCP
MCP server that exposes Philter's PII and PHI redaction as tools for Claude Desktop, Claude Code, Cursor, and other MCP-aware clients. Redact inside the agent's tool loop, with no integration code.
Star 1Benchmarking
Go
Philter Scope
Standalone audit tool that scores redaction policies on precision and recall, so policy changes can be measured rather than guessed at.
Star 1Human review
Java
Arbiter
Human-in-the-loop PII redaction. Search, review, and override automated detection decisions with structured exemption codes. Built for AI training-data prep and regulated everyday workflows.
Star 1Differential privacy
Python
Philter Diffuse
Privacy-first analytics that applies differential privacy to PII counts, preserving statistical utility without exposing individuals.
Star 1Policy editor
JavaScript
Redaction Policy Editor
Web console that lets non-technical users build and deploy redaction rules through a visual, no-code interface.
Star 1Query language
Java
PhiSQL
Declarative query language for PII operations. Write readable redaction policies as code that compile to the standard Phileas JSON schema.
Star 1Contribute
The roadmap, the issues, the conversations: all in the open.
Good first issues across philterd
No "good first issue" tickets are open right now. Nice problem to have. Browse the repos directly for other ways to contribute, or open an issue with your idea.