How to use Gems in Neuro for ad operations
Save the reporting rules you keep typing: which metrics to use, what to check, and how to write the result. A Neuro Gem keeps those instructions ready for the next task.
In Neuro, a Gem is an operating mode
Media buyers tend to ask Neuro the same handful of things: “Summarize last week’s performance,” “Find budget-cut candidates,” “Draft report copy for the client.” But even when the question is identical, the standard for a good answer changes every time. A response written for a client report and a response written for budget-change review shouldn’t come back in the same tone or format.
A Neuro Gem stores task instructions you can apply to chat. A weekly-report Gem might specify the audience and required metrics; a budget-review Gem might request before-and-after values and risks to check. Test the output against those instructions after saving them.
- In the chat input box, open the Gems menu and click Create new Gem.
- Name it after a single task. Names like Weekly performance report, Budget change review, and Creative fatigue review work well because anyone gets them at a glance.
- For save location, choose Workspace shared if it’s a standard the whole team will use, or My Gem if it’s a personal workflow.
- Under Guidelines, spell out the role, the data to check, the order of analysis, the actions it must never execute, and the output format.
- Select a Gem in chat, then ask away as usual. The same question gets read through the lens of whichever Gem you picked.
- If answers keep missing the mark, don’t pile more onto your question—update the Gem’s guidelines instead. For recurring work, the standard belongs in the Gem, not in every prompt.
Five Gems worth starting with
You don’t need to turn every task into a Gem on day one. Start with the work that comes up most often and where inconsistent standards quickly drive up your operating costs.
| Gem | What to hand off to Neuro | Example opening question |
|---|---|---|
| Weekly performance report Gem | Summarize the key changes across connected ad accounts, likely causes, and next steps, formatted for client reporting | Compare the last 7 days with the prior 7 days and write it up as a draft summary to send to the client |
| Budget review Gem | Surface budget increase and decrease candidates, then build approval cards that lay out the evidence and risks for approvers | Find candidates to scale next week’s budget up or down—don’t execute, just package them as approval cards |
| Creative fatigue review Gem | Read CTR, frequency, conversion rate, and landing-message alignment together to shortlist creatives to refresh | Break down campaigns showing signs of creative fatigue over the last 14 days by likely cause |
| Client playbook Gem | Apply a specific brand’s banned phrasing, reporting tone, KPI priorities, and budget-change rules | Using this client’s standards, flag any absolute claims that should come out of this week’s report |
| New account owner onboarding Gem | Walk through account structure, recent change history, recurring issues, and what to check next | Explain this workspace’s ad account structure and the top current risks a new owner should review first |
All five play to what Neuro does best. Ad platform data gets pulled through MCP tools, brand context comes from the workspace, and any recommendation that would change a live account stops in a format a human can review first.
Write Gem guidelines like an ops doc
A Gem whose guidelines stop at “You are a marketing expert” is close to useless. An ad operations Gem should read more like an ops manual than a character sheet. Spell out the order in which the AI reads data, where it has to stop, and the format its answer should take.
| Guideline field | What to write | Example |
|---|---|---|
| Role | Whose work you’re supporting, and on what task | You’re the performance lead’s assistant analyst, and you assemble the evidence before any budget change |
| Data to check | Which ad data and context to look at first | Start with campaign performance and recent change history in Google Ads, Meta Ads, and Naver Ads |
| Order of analysis | The review sequence to follow before drawing a conclusion | Work in this order: goals and conversion definitions, campaign structure, budget pacing, conversion quality, then creative signals |
| Execution boundaries | Actions the AI must never carry out on its own | Never change budgets, bids, or campaign status directly—only propose them as approval cards |
| Output format | An answer structure the team can review at a glance | Lay out likely causes, ruled-out causes, supporting metrics, risks to check, and next steps in a table |
Test the saved Gem on one real weekly report. If it misses a metric you always need, update the Gem. If a detail matters only this week, add it in chat. Judge the instructions by the results, not by how short your prompt becomes.
Sources
- Google Gemini Apps Help: Get started with Gems
Official Google help article that describes Gems as Gemini’s custom version tailored for repetitive tasks and expert domains.
- Google Gemini Apps Help: Use Gems in Gemini Apps
Official Google help article explaining the flow for creating Gems, writing guidelines, adding files, sharing, and managing them.
- Google Blog: 5 tips on getting started with Gems
Official Google blog post introducing how to use Gems for repetitive workflows, precise instructions, and as team-like collaborators.
- Google Blog: Custom Gems and Imagen 3
Official Google announcement explaining the background of the Gems launch and their positioning as custom AI experts.
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