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Sephir — Browser-native AI agent

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Overview

A real AI agent in every browser tab. Reads, clicks, fills, compares — powered by your ChatGPT Plus or your own API keys.

Sephir is a real AI agent in every browser tab — reading pages, clicking buttons, filling forms, comparing tabs, and running multi-step work end to end. It runs on the AI accounts you already pay for. Sign in with your ChatGPT Plus subscription (OAuth via Codex), or bring your own API key for Claude, Gemini, OpenAI, Mistral, or OpenRouter. No extra subscription on top of what you already have. == What it does == • Reads the page you're on — from the selection toolbar or the side panel. • Compares two tabs side by side ("compare @tab[a] and @tab[b]"). • Extracts structured data into JSON using a schema you provide. • Drives forms and pages — click, fill, type, navigate, wait for results — with a per-tool permission prompt the first time. • Summarizes YouTube videos with timestamps, transcript-aware. • Rewrites email in your tone using writing samples you pin. • Records a multi-step chat as a reusable workflow with {{variables}}. • Installs agent skills from the skills.sh / GitHub registry. • Exports any conversation to Markdown, JSON, or the clipboard. The audit timeline shows every tool call with its timestamp and arguments. == Privacy == Conversations, keys, and tokens stay in chrome.storage.local on your device. BYOK keys are encrypted at rest with a non-extractable key. BYOK requests go from your browser straight to the provider — we don't proxy them. No history sync by default. Anonymous usage telemetry is on by default and one switch in Settings turns it off; it counts events only, never prompts, page content, or the sites you visit. Full policy: https://sephir.app/privacy-policy == Pricing == The free tier with your own API key is unlimited. Sephir Pro Lifetime is $39 one-time for the first 500 seats — no monthly subscription, ever, and a 30-day refund. == Open development == Built in the open. Bugs and feature requests: hello@sephir.app, or sign in and use the feedback form at https://sephir.app/feedback

Details

  • Version
    1.0.1
  • Updated
    September 7, 2026
  • Offered by
    admin
  • Size
    3.24MiB
  • Languages
    English (United States)
  • Developer
    Email
    admin@futuromy.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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Sephir — Browser-native AI agent has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Sephir — Browser-native AI agent handles the following:

Personally identifiable information
Authentication information
User activity
Website content

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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