Quickstart

1. Start PasteGuard

docker run --rm -p 3000:3000 ghcr.io/sgasser/pasteguard:latest

PasteGuard runs on http://localhost:3000. Open http://localhost:3000 to see the dashboard.

For custom configuration, Docker Compose, or persistent logs, see Installation.

2. Choose Your Path

Browser Chat

Use the experimental browser extension with ChatGPT, Claude, and Gemini.

Apps & APIs

Change one base URL for your app or SDK.

Coding Agents

Point Codex, Claude Code, Cursor, and other coding agents at PasteGuard.

3. API Endpoints

Point your app, SDK, or coding agent to PasteGuard:

Target	PasteGuard URL
OpenAI	`http://localhost:3000/openai/v1`
Anthropic	`http://localhost:3000/anthropic`
Codex CLI	`http://localhost:3000/codex`

4. Verify It Works

Send a test request and check the response headers:

curl -i http://localhost:3000/openai/v1/chat/completions \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "gpt-5.2", "messages": [{"role": "user", "content": "Write a follow-up email to Dr. Sarah Chen (sarah.chen@hospital.org)"}]}'

Look for:

X-PasteGuard-PII-Detected: true
X-PasteGuard-PII-Masked: true

The name and email were masked before reaching OpenAI and restored in the response.

5. View Dashboard

Open http://localhost:3000 in your browser to see:

Request history
Detected PII and secrets
Masked content sent to upstream APIs or Codex CLI

Introduction Installation

⌘I

Getting Started

Use Cases

Concepts

API Reference

Configuration

1. Start PasteGuard

2. Choose Your Path

Browser Chat

Apps & APIs

Coding Agents

3. API Endpoints

4. Verify It Works

5. View Dashboard

​1. Start PasteGuard

​2. Choose Your Path

Browser Chat

Apps & APIs

Coding Agents

​3. API Endpoints

​4. Verify It Works

​5. View Dashboard

1. Start PasteGuard

2. Choose Your Path

3. API Endpoints

4. Verify It Works

5. View Dashboard