# pasteguard — Local Privacy Proxy for AI Tools

> PasteGuard is an open-source local proxy that masks API keys, emails, and PII before requests reach OpenAI/Anthropic. Start via Docker.

## Install

Save as a script file and run:

## Quick Use

```bash
docker run --rm -p 3000:3000 ghcr.io/sgasser/pasteguard:en
# OpenAI-compatible clients: use PasteGuard as base_url
echo 'OpenAI base_url: http://localhost:3000/openai/v1'
# Claude Code: route Anthropic traffic through PasteGuard
ANTHROPIC_BASE_URL=http://localhost:3000/anthropic claude
```

## Intro

PasteGuard is an open-source local proxy that masks API keys, emails, and PII before requests reach OpenAI/Anthropic. Start via Docker.

**Best for:** Teams using AI coding tools who must avoid leaking secrets in prompts

**Works with:** Docker, OpenAI SDK base_url override, Claude Code via ANTHROPIC_BASE_URL

**Setup time:** 3-8 minutes

### Key facts (verified)

- GitHub: 628 stars · 26 forks · pushed 2026-05-13.
- License: Apache-2.0 · owner avatar + repo URL verified via GitHub API.
- README-verified entrypoint: `docker run --rm -p 3000:3000 ghcr.io/sgasser/pasteguard:en`.

## Main

- Treat PasteGuard as a drop-in reverse proxy: you change the base URL once, and it masks secrets/PII before the request leaves your machine.

- Use it both for chat and coding tools: the proxy path supports OpenAI-style `/v1` routing and a dedicated `/anthropic` endpoint.

- If you need higher privacy, enable the project’s “route mode” idea: sensitive requests can be routed to a local model while non-sensitive traffic goes to a hosted provider (see docs).

### Source-backed notes

- README Quick Start runs a local proxy container on port 3000 and shows base URLs like `http://localhost:3000/openai/v1`.
- README claims it detects 30+ types of sensitive data across 24 languages and keeps data on-device.
- README includes a Claude Code example using `ANTHROPIC_BASE_URL=http://localhost:3000/anthropic`.

### FAQ

- **Does it require code changes?**: Usually no — you swap the provider base URL to the localhost proxy and keep the rest the same.
- **What does it mask?**: README highlights names, emails, and API keys; masking behavior depends on its detection engine and config.
- **Can I use it with Claude Code?**: Yes — README shows routing Anthropic requests via `ANTHROPIC_BASE_URL` to the local proxy.

## Source & Thanks

> Source: https://github.com/sgasser/pasteguard
> License: Apache-2.0
> GitHub stars: 628 · forks: 26

---

<!-- ZH -->

## Quick Use

```bash
docker run --rm -p 3000:3000 ghcr.io/sgasser/pasteguard:en
# OpenAI-compatible clients: use PasteGuard as base_url
echo 'OpenAI base_url: http://localhost:3000/openai/v1'
# Claude Code: route Anthropic traffic through PasteGuard
ANTHROPIC_BASE_URL=http://localhost:3000/anthropic claude
```

## Intro

PasteGuard 是开源本地代理：在请求到达 OpenAI/Anthropic 前自动遮盖 API key、邮箱等敏感信息。用 Docker 3 分钟跑起，然后把客户端 Base URL 指到 localhost。

**Best for:** 在 Cursor/Claude Code 等场景下，必须防止密钥/隐私外泄的团队

**Works with:** Docker；OpenAI SDK 的 base_url 覆盖；Claude Code 的 ANTHROPIC_BASE_URL

**Setup time:** 3-8 minutes

### Key facts (verified)

- GitHub：628 stars · 26 forks；最近更新 2026-05-13。
- 许可证：Apache-2.0；作者头像与仓库链接均已通过 GitHub API 复核。
- README 中核对过的入口命令：`docker run --rm -p 3000:3000 ghcr.io/sgasser/pasteguard:en`。

## Main

- 把 PasteGuard 当成“只改一次 URL 的反向代理”：客户端的 base URL 指向 localhost，它会在请求出机前自动脱敏。

- 同时覆盖聊天与编码工具：README 给出 OpenAI 风格 `/openai/v1` 路径以及 `/anthropic` 入口。

- 需要更强隐私时，可参考其“route mode”思路：含敏感信息的请求转发到本地模型，其他请求再走云端（以文档为准）。

### Source-backed notes

- README 的 Quick Start 使用 Docker 在 3000 端口启动本地代理，并给出 `http://localhost:3000/openai/v1` 这样的 base URL 示例。
- README 提到可检测 30+ 类敏感数据、覆盖 24 种语言，并强调数据不离开本机。
- README 给出 Claude Code 的示例：`ANTHROPIC_BASE_URL=http://localhost:3000/anthropic`。

### FAQ

- **需要改业务代码吗？**：大多数情况不需要：把 provider 的 base URL 换成 localhost 代理即可。
- **能脱敏哪些内容？**：README 强调姓名、邮箱、API key 等；具体规则以其检测引擎与配置为准。
- **能和 Claude Code 一起用吗？**：可以。README 给出了通过 `ANTHROPIC_BASE_URL` 走本地代理的示例。

## Source & Thanks

> Source: https://github.com/sgasser/pasteguard
> License: Apache-2.0
> GitHub stars: 628 · forks: 26


---
Source: https://tokrepo.com/en/workflows/pasteguard-local-privacy-proxy-for-ai-tools
Author: Script Depot