Catch secrets before AI tools see them.

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June 25, 2026

Offsend CLI

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Catch secrets before AI tools see them.

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Offsend CLI is a free, open-source, local-first command-line tool that helps developers check what AI tools may read from their projects.

It scans files, folders, and staged git changes for sensitive data such as API keys, tokens, private keys, environment files, logs, and other risky project context. Everything runs locally on your machine — no file contents are uploaded.

Offsend helps you audit exposed context before using tools like ChatGPT, Claude, Cursor, or other AI workflows. The `offsend show` command shows files and folders that may be visible to AI tools, while `offsend prepare` generates AI ignore files such as `.cursorignore`, `.claudeignore`, and `.aiexclude`.

It also works in git hooks and CI. With `offsend hook install`, you can add a pre-commit check that scans staged changes before they are committed.

Offsend CLI is easy to install on macOS and can be used from the terminal, git hooks, or automated workflows.

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June 25, 2026

Initial release of Offsend CLI.

Author

Simon Hudishkin

@hudishkin

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lab13.io

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Joined: October 2025

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Pros and Cons

Pros

Free, open-source tool

Local-first tool

Scans files for secrets

Reviews sensitive file paths

Terminal compatible

Can operate with git hooks

Works with Continuous Integration

No server upload requirement

Supports per repository configuration

Allows custom detectors and exclusions

Tightens risk management

Supports macOS

Local pre-commit hook feature

Advanced secrets management

Automatic generation of ignore rules

Offers private key security

API key protection

Token security mechanism

CLI-tool command options

Secure data handling

Compliance-optimized tool

Terminal demo for commands

Prepares projects ignore files

Configurable and automation-oriented

No account creation needed

Homebrew-compatible installation

Provides a .offsend.yml file

Lists exposed sensitive files

Blocks commits containing secrets

On-premise safety management

Secure coding support

Code exposure audit functionality

Protects sensitive project context

API-agnostic; works with any

Supports custom dictionaries

Excludes specified file types

Command 'offsend show' for exposure list

Command 'offsend prepare' for file generation

Command 'offsend hook install' for pre-commit hook

Command 'offsend check' for scanning files

Handles data protection

Optimized for software development

Enforces advanced infosec standards

Improved DevOps security

Provides continuous integration compatibility

Enhances the confidentiality of projects

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Cons

Only available on macOS

Limited to local scanning

No support for Windows/Linux

No cloud-based scanning option

No web-based interface

No multi-user support

Configuration limited to .offsend.yml

No built-in alert system

No integration with issue trackers

No support for non-git projects

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Q&A

What is Offsend CLI?

Offsend CLI is a free, local-first command-line tool designed to protect sensitive data in AI contexts. It works by scanning files and staged changes, auditing what is visible to AI tools, operating from terminals, git hooks, or CI environments, and blocking commits containing sensitive or privileged information.

Does Offsend CLI require a user account to operate?

No, Offsend CLI operates without requiring any user account.

Can Offsend CLI be used directly from terminals and CI environments?

Yes, Offsend CLI can be used directly from terminals, git hooks, and continuous integration (CI) environments.

How does Offsend CLI protect sensitive data in AI contexts?

Offsend CLI protects sensitive data in AI contexts by scanning files and staged changes for API keys, tokens, private keys, and similar secrets. It audits what is visible and accessible to AI tools and blocks commits containing privileged information.

What four commands are the command-line interface of Offsend CLI equipped with?

The command-line interface of Offsend CLI is equipped with four commands: 'offsend check', 'offsend show', 'offsend prepare', and 'offsend hook install'.

Can you specify detectors, exclusions, and custom dictionaries in Offsend CLI?

Yes, Offsend CLI allows you to specify detectors, exclusions, and custom dictionaries based on your needs.

+ Show 34 more

How does 'offsend check' command work?

'Offsend check' command works by scanning files, folders, or staged git changes for API keys, tokens, private keys, and similar secrets.

What does 'offsend show' command do?

'Offsend show' command lists the sensitive files that are not covered by ignore rules.

What is 'offsend prepare' used for?

'Offsend prepare' is used to create new AI ignore files where required, which helps to enforce boundaries for AI tools.

What operations does 'offsend hook install' perform?

'Offsend hook install' performs the function of installing a pre-commit hook that runs checks against staged changes and blocks any commits containing sensitive information.

How to tune checks per repository using Offsend CLI?

Checks per repository can be tuned using a .offsend.yml file in Offsend CLI. This file allows to specify detectors, exclusions, and custom dictionaries, tailoring the checks to the requirements of the specific repository.

What additional features does the desktop app version of Offsend CLI offer?

The desktop app version of Offsend CLI offers additional features such as Safe Paste, one-click fixes, and local AI detection.

Is Offsend CLI an open-source tool?

Yes, Offsend CLI is an open-source tool.

On which operating systems can Offsend CLI be installed?

Offsend CLI can be installed on macOS.

Is there any server-side scanning needed for Offsend CLI?

No, there is no server-side scanning required for Offsend CLI as it is a local-first tool.

Can Offsend CLI be used to block commits containing privileged information?

Yes, Offsend CLI can be used to block commits that contain sensitive or privileged information.

How is data protection ensured by Offsend CLI in the context of AI tools?

Data protection is ensured by Offsend CLI by preventing privileged data from being visible to AI tools. It conducts checks to find sensitive data (like API keys, tokens, private keys, etc.) and blocks commits that contain such information.

What function does the .offsend.yml file serve in Offsend CLI?

The .offsend.yml file in Offsend CLI serves to configure and automate checks. It allows tuning of detectors, exclusions, and custom dictionaries. CLI flags override these config values when provided explicitly.

How quickly can Offsend CLI be installed and ready to use?

Offsend CLI can be installed and ready to use in seconds, aiding in rapid implementation of data security measures.

Is it possible to use Offsend CLI on git hooks?

Yes, Offsend CLI can be used on git hooks.

What is Offsend CLI?

Offsend CLI is a local-first, open-source tool designed primarily for developers. Its purpose is to help protect sensitive project context from being exposed to AI tools such as ChatGPT, Claude, Cursor, among others. It scans files, staged git changes, and folders, searching for sensitive data like credentials, private keys, tokens, API keys, and the like. Offsend CLI can also be used to generate AI ignore files and can be employed from the terminal, CI, or git hooks, without requiring an account or sending code to a server. It also offers configuration per repository through a .offsend.yml file and has provisions for installing a local pre-commit hook for additional security.

How does Offsend CLI protect sensitive project context?

Offsend CLI protects sensitive project context by scanning files, folders, and staged git changes for secrets such as API keys, tokens, private keys, credentials, and other sensitive information. It shows what may be exposed to AI tools and helps generate AI ignore files. Moreover, it can be used from the terminal, git hooks, or CI without sending code to a server.

Can Offsend CLI be used in CI environments?

Yes, Offsend CLI can indeed be used in Continuous Integration (CI) environments. It is designed to run locally without requiring an account or moving data to a cloud server, making it suitable for automation and configuration in CI pipelines.

What kind of secrets does Offsend CLI scan for?

Offsend CLI scans for secrets such as API keys, tokens, private keys, credentials, and other categories of secure data. It identifies these secrets before they get exposed to AI workflows, thus preventing potential security risks.

How can I use Offsend CLI from the terminal?

You can use the Offsend CLI from the terminal by utilizing several commands. For example, 'offsend check -staged' scans your staged changes, files, and folders for sensitive data, 'offsend show' lists the exposed sensitive paths that can be accessed by AI tools, and 'offsend prepare' crafts AI ignore files for the project.

Does Offsend CLI send any of my code to a server?

No, Offsend CLI operates in a 'local-first' mode, which means it carries out all operations on your local machine and does not send any file content or code to a server. This provides an added layer of protection to your sensitive data.

How do I use the 'offsend check' command?

You can use the 'offsend check' command to scan files, folders or staged git changes for secrets such as API keys, tokens, private keys, and similar sensitive information before they leave your Mac. This command can be run in the terminal.

What does the 'offsend show' command do?

The 'offsend show' command lists the sensitive files that would be sent to the AI too.l because no ignore rule covers them. The results are categorised by data type and are read-only.

How do I generate AI ignore files using Offsend CLI?

You can generate AI ignore files using the command 'offsend prepare'. Running this command in the terminal will create the AI ignore files that your project is missing so that AI education tools respect your data boundaries.

What does the 'offsend hook install' command do?

The 'offsend hook install' command installs a pre-commit hook that runs the same checks against staged changes and blocks commits containing sensitive data. This provides an added layer of protection that pre-screens staged changes before the commit occurs.

Can I configure Offsend CLI for each repository?

Yes, the Offsend CLI can be configured for each repository by committing a .offsend.yml file into your repository. This allows developers to adjust detectors, exclusions, and custom dictionaries according to their stack.

What is the function of the '.offsend.yml' file?

The '.offsend.yml' file allows developers to tune detectors, exclusions, and customise dictionaries for each repository. This feature allows checks to be tuned and run in CI. CLI flags can override config values when explicitly provided.

Does Offsend CLI support macOS?

Yes, Offsend CLI supports macOS. It is designed to run locally and can be installed easily on macOS systems.

How can I install Offsend CLI on my local machine?

You can use the command 'brew install -cask offsend/tap/offsend-cli' to install Offsend CLI on your local macOS machine.

Is Offsend CLI a free tool?

Yes, Offsend CLI is a free command-line tool. It is also open-source, allowing anyone to utilise, modify, and distribute the software.

How does Offsend CLI contribute to AI safety?

Offsend CLI contributes to AI safety by scanning and alerting developers of sensitive information in files, folders, and staged git changes that might be inadvertently exposed to AI tools. It generates AI ignore files to keep confidential data out of AI's reach, and it operates from the terminal without requiring an account or sending code to a server. This provides a safeguard against accidental data exposure.

What is the advantage of a local-first tool like Offsend CLI?

A local-first tool like Offsend CLI has the advantage of conducting all operations on the user's local machine without the need to upload file contents to a server. This ensures sensitive information remains within the premises, thus reducing the risk of data exposure.

Can Offsend CLI be integrated into my git hooks?

Yes, Offsend CLI can be integrated into your git hooks. By using the command 'offsend hook install', a pre-commit hook that screens staged changes and prevents committing of secure data can be installed.

Is Offsend CLI open-source software?

Yes, Offsend CLI is an open-source software. Its source code is freely available for modification and distribution.

How does Offsend CLI prevent sensitive information from being exposed to AI tools?

Offsend CLI prevents sensitive data from being exposed to AI tools by scanning files, folders, and staged git changes for secrets such as API keys, tokens, private keys, credentials, and other sensitive data. It alerts developers of any potential exposure before the data reaches the AI tools. Furthermore, it aids in generating AI ignore files that ensure confidential data remains outside the AI's reading context. Importantly, all operations are prosecuted on the local machine without the need for server-side scanning or accounts.

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Offsend CLI

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