Every text fieldon the web,in their language.
A support ticket arrives in Japanese. You press Cmd+Shift+K. Sidekick translates it so you understand it, drafts your reply in Japanese, and waits. Nothing is sent until you say so.
- languages supported
- 0
- MCP tools for your editor
- 0
- messages ever auto-sent
- 0
Detected · Japanese
注文した商品がまだ届きません。配送状況を確認していただけますか？
“My order still hasn’t arrived. Could you check the delivery status?”
Drafting reply · Japanese · Professional
ご不便をおかけし申し訳ございません。配送状況を確認いたしましたところ
Sidekick is a paid, hosted product. Framesleuth, the video agent, is free and open source — different product, different terms.
Everything you write at work, in any language — without handing over your drafts.
It proposes, you decide
Every result is a preview. Insertion is a click you make, and Sidekick has no ability to send a message on your behalf — not a setting, an absence of capability.
History stays on your device
Drafts, translations and settings live in your browser's local storage — never uploaded, never on our servers. Your account covers billing and your daily allowance, nothing else.
No API key to manage
Model access is included. Nothing to create, fund, rotate, or discover has expired in the middle of a customer conversation — that is most of what you are paying for.
It reads images, not just text
OCR any screenshot, turn a whiteboard photo into an editable Mermaid diagram, or read a chart into a plain-language analysis plus the underlying numbers.
Multi-step work, shown step by step
Four capabilities reason in steps rather than one pass — the agent, Digitize, Datalyst and whole-page digests — and each shows its working as it goes.
Callable from your editor
Ships an MCP server exposing 13 writing tools, so VS Code and Cursor can call them directly. None of its tool names collide with the video agent's.
Three steps, and the second one is just signing in.
- 01
Add it to Chrome
One click from the Chrome Web Store. Nothing is enabled on any page until you ask for it, and sensitive sites are off by default.
Coming to the Chrome Web Store - 02
Sign in at framesleuth.com
The extension reads your session from this site, so there is no key to generate, copy, or paste into a settings box. One account, one place to manage it.
- 03
Press the shortcut in any text field
Gmail, Outlook, LinkedIn, Slack, a plain textarea — anywhere you can type. The popover opens on the focused field, your selection, or a blank draft.
⌘⇧KCtrl+Shift+K on Windows
Every shortcut
- ⌘⇧K
Open Sidekick
On the focused field, the selected text, or a blank draft.
Ctrl+Shift+K
- ⌘⇧S
Capture a region
Snip any rectangle — works on PDFs and local files too.
Ctrl+Shift+S
- ⌘⇧E
Record screen or video
Capture, trim and export entirely in your browser.
Ctrl+Shift+E
All three are remappable at chrome://extensions/shortcuts, and every on-page trigger — selection button, field focus, the right-click menu, the floating launcher — is a toggle you control.
Write anything, in any of 15 languages.
Reply in their language
Detects the incoming language, translates it so you understand the request, then drafts your reply in that language — or both side by side.
Match the tone
Professional, Friendly, Concise, Detailed — or type your own instruction. “Apologetic but firm.” “Ask for a meeting next week.”
Fix grammar, keep your voice
Corrects spelling, punctuation and grammar without rewriting your wording into someone else's style. Works in all 15 languages.
Rewrite, or write from a brief
Have a draft? It polishes, shortens, expands, or shifts tone. Have only an idea? Give it one line and it writes the message.
Hand over a whole task
reasons in stepsDescribe a goal — “summarize this thread, then draft a friendly reply in French” — and the agent plans, calls its writing tools across up to 8 steps, and shows each one as it works.
It reads images too.
Right-click any image, or snip a region of the page. The result opens in the same popover as the writing tools, pre-filled and ready to work on.
Pull text out of any image
Paste a screenshot, pick a file, drag one in, or snip a region of the live page — including PDFs and local files. The text lands in the popover, ready to work on.
Turn a photo into a diagram
reasons in stepsRight-click a whiteboard sketch, flowchart or org chart. A vision model picks the diagram type that fits and rebuilds it as editable Mermaid, with a Preview/Code toggle and Open in Excalidraw.
Read a chart, or build one
reasons in stepsDatalyst reads a chart image — or a table you highlighted — into a plain-language analysis plus the underlying numbers. Export CSV, or re-visualise it as a bar, line, pie, mind map or flowchart.
Digest a long page
reasons in stepsExplain or summarize the whole page, not just the top. Long pages are chunked, condensed in parallel, then synthesized — with an optional focus like “the security implications”.
It shows up where you already are, and nowhere else.
No dashboard to visit, no tab to keep open. Sidekick appears on the page you are on, only when you ask — and the content script stays dormant until a trigger you enabled fires.
The in-page popover
Opens on the focused field, your selection, or a blank draft. Every writing action and the agent live here, and nothing is inserted until you click.
- Explain this image
- Analyze with Datalyst
- Digitize as diagram
- Extract text
- Capture part of this image
Improve selection
Visualize with Datalyst
The right-click menu
Right-click an image to read, digitize or analyse it; right-click a selection to improve or visualise it. The same six-option chooser drives every capture.
- Open Sidekickon this page
- Recordscreen or video
- Bookmarkssaved & auto-filed
- Settingsskills, models, triggers
The toolbar hub
The pinned icon opens a compact hub: the popover, the recorder, your bookmarks, and settings — where skills, models and every on-page trigger are toggles.
Built-in adapters pull thread context on these; a generic adapter handles everything else. If you can type in it, Sidekick works there.
- Gmail
- Outlook
- X (Twitter)
- Slack
- WhatsApp Web
- GitHub
- Notion
- Any <textarea>
A recorder, smart bookmarks, and your editor.
Record your screen
A Loom-style capture tool — screen, window, tab, webcam, region, or screen + camera. Preview, trim, export a GIF, download. Entirely client-side; nothing leaves your device.
Smart bookmarks
Save a page and it files itself — a model picks the best existing folder or proposes a new one, with inline undo when the guess is off.
Searchable history
Every draft, translation and rewrite is saved locally in your browser. Never sent to a server, never tied to an account.
Drive it from your editor
Ships an MCP server exposing the writing tools, so VS Code, Cursor and other MCP hosts can call them directly.
It proposes. You decide.
Nothing is auto-sent
Every result is a preview. Insertion is a click you make. Sidekick has no ability to send a message on your behalf.
History stays on your device
Drafts, translations and settings live in your browser's local storage — never uploaded, never on our servers.
Images are read, not kept
Screenshots and chart images are forwarded to a vision model for that one request and never written to disk. Extracted text is held in memory for a day so a repeat costs you nothing.
Message content is not logged
The backend records that a request happened and how large it was, never what it said.
Frequently asked
No. Model access is included in the subscription — there is no key to create, fund or rotate. That is the main thing you are paying for over self-hosting.
Stop rewriting the same reply in a language you don’t speak.
Install it, sign in once at framesleuth.com, and it works in every text field you already use. Cancel any time.
Looking for the free video agent? Framesleuth is open source.