Articles · Pillar guide
What you send to Gemini vs local tools — and prompt hygiene
DevNestro runs two very different classes of feature under one roof. Local tools keep text and files in the browser (or briefly on this host only when a page says so). Gemini tools send prompts, files, or URLs to Google’s API. Mixing those mental models is how confidential paste becomes a cloud event. Prompt hygiene is the pause that belongs before any cloud send.
The problem
People use a local redactor, then paste the original into Gemini Chat anyway. Others assume “the site is private” covers cloud AI. Free-tier provider terms may allow broader use of submitted content than a paid tier — tool pages and the Privacy Policy say to verify the configured tier. Secrets hide in stack traces, sample rows, and “full context” dumps. The failure is speed without classification.
How it works
Classify the job: transform a file locally, or ask a model. If local, prefer the matching browser tool and read its note. If cloud AI, assume the provider will process the payload. Strip emails, keys, customer names, and internal hostnames first. Prefer synthetic examples. Do not upload regulated datasets to a chat to “summarize real quick.” Clear the page when you are done so temporary Gemini files and stores can be deleted as the product describes.
Practical steps
- Label the page: does it say cloud AI / Gemini, or browser-local?
- If cloud: run Prompt Privacy Checker (or Privacy Redactor) on the draft before paste.
- Replace real IDs with placeholders; keep a private map offline if you must re-substitute later.
- Avoid pasting production secrets even “for a second.” Rotate if you already did.
- Afterward, clear the cloud tool session as the page instructs.
Privacy and trust
Prompt Privacy Checker and Privacy Redactor run in your browser. Gemini pages send data to Google’s Gemini API as documented on each page and in the Privacy Policy. DevNestro does not keep a prompt archive after the session; application logs may record feature name, model id, duration, and token counts — not the prompt text.
Pitfalls
Local scanners miss cleverly formatted secrets. Cloud labeling does not make a model’s answer correct. Provider data-use rules can change; re-read Privacy when you handle sensitive work. Live camera/voice tools stream frames or audio — treat them like an open mic.
Questions people ask
Are all DevNestro tools local?
No. Gemini-labeled tools are cloud AI. Many image/PDF/privacy helpers are browser-local. Read the page.
What does prompt hygiene mean in practice?
Remove or mask personal data and credentials before the text leaves your device for a model API.
Does DevNestro train on my prompts?
DevNestro does not keep prompts to train its own models. Cloud providers process prompts under their terms for the configured tier.
What is a good first tool before Gemini Chat?
AI Prompt Privacy Checker for text you were about to send.
Local for transforms you can do on-device; Gemini only when you mean it. Scrub with Prompt Privacy Checker first.