Post, schedule and run ads from Gemini

What is Gemini?

Gemini is Google’s assistant, at gemini.google.com and in the Gemini mobile apps. It connects custom apps by MCP server URL, and once one is connected it is available on the web and on mobile, so Hermoso’s tools can be called from an ordinary Gemini chat.

The Gemini app or Gemini CLI? This page is the Gemini app. Gemini CLI, Google’s terminal agent, installs Hermoso as an extension instead.

Hermoso is marketing on autopilot: 876+ tools over one MCP endpoint covering competitor ad research, finished image and video ads across 90+ models, publishing and scheduling to ten social channels, and campaign management on Meta, Google Ads, Microsoft Advertising, Reddit Ads, LinkedIn, Pinterest, X Ads, TikTok Ads, Snapchat Ads, ChatGPT Ads and Apple Search Ads. One connection, and Gemini has all of it.

Connect Hermoso to Gemini

1. Copy the connector URL. https://app.hermoso.ai/mcp
2. gemini.google.com → Settings → Connected Apps. Under Custom apps, click Add a custom app and enter the URL. It has to be added from the web app; once connected it works in the mobile apps too.
3. Sign in and approve. Hermoso supports dynamic client registration, so there are no credentials to enter under Advanced features. Approve on the Hermoso page with your Hermoso account.
4. Call it in a chat. Type @ and pick Hermoso to make sure Gemini uses it for that request.
5. Ask Gemini for something. “Pull my three closest competitors’ longest-running ads and remix the best hook into a 9:16 video,” or “post this render to the channel.” The agent picks the tools; you approve the spend.

Google’s requirements for custom apps today: you are 18 or over and in the US, signed in with a personal Google Account (work and school accounts cannot use it yet), with Keep Activity on, and using Gemini in English. The steps are quoted from Google’s help article “Connect & manage custom apps for Gemini Apps”, read on 2026-10-03, and documented rather than run here. Hermoso is not affiliated with or endorsed by Google.

Every channel Gemini can publish to

Each channel links to its Hermoso page, with that channel’s real caption cap, visibility options and what it refuses. Gemini reaches all of them through the same tools as every other agent.

Every one of them queues through one schedule_post calendar with per-channel captions, and list_scheduled reports per-channel outcomes rather than a single green tick, because “the job succeeded” and “the post went out” are different questions. A scheduled post lives in Hermoso, so it goes out on time whether or not Gemini is still running.

Two channels that are built but not offered

Being straight about this is worth more than a longer list. Two publishing surfaces exist in the codebase and are held back, each waiting on the platform rather than on us:

• Reddit: organic posting and post stats are built, but Reddit’s Responsible Builder Policy requires explicit written approval before an app may use the Data API, and that ticket has not been granted. The connector is held back rather than offered as an OAuth screen leading to a dead API. Reddit Ads is a different connection and it is live: the full campaign tree, forecasting, targeting search, pixels and lead forms.
• Google Business Profile: post_to_google_business is built, with events, offers and a real call-to-action choice, and so are the listing insights. Google allowlists the Business Profile API per project and the default quota is zero, so every call would 403 for every user. It stays gated until Google grants the project access.

A connector that would hand you a successful OAuth and a dead API is worse than one that is not offered yet, so neither is listed as available.

Three things to type once it is connected

1. Research. “Who are my three closest competitors, and what are their longest-running Meta ads? Tell me which hook keeps repeating.” It runs find_competitors → pull_competitor_ads → mine_angles.
2. Create. “Make me a 9:16 UGC video ad using that hook, with my real product photo and captions burned in.” It runs get_brand → plan_ad → render_ad, and hands back a finished mp4 URL.
3. Ship. “Schedule it to Instagram and TikTok for Tuesday 9am, and build a paused Meta campaign around it targeting the US at $30 a day.” It runs schedule_post → create_meta_campaign → create_meta_ad.

What Gemini cannot do on its own

An agent with a budget is only useful if the blast radius is bounded, so the fence is in the server rather than in a prompt. Every ad campaign, ad set, ad group and ad is created paused, and the status switches that arm real money refuse to run without an explicit confirmation flag. Every render is quoted first (hermoso_capabilities publishes each model’s exact credit cost before anything spends). Credits are reserved before the first provider call and settled at the exact cost afterwards, so a failed dispatch refunds rather than leaving you billed for nothing. Deletes are confirm-gated too, and every campaign tree is read back from the ad platform before your agent tells you what it built.

One step is deliberately yours: linking each account, once. Most channels link through the platform’s own OAuth consent screen in a browser; Bluesky takes an app password and Telegram a bot token, pasted in Hermoso. Everything after that is a tool call.

Google says write actions from a custom app need your manual confirmation, so a publish or a schedule is a step you approve in the chat. Hermoso’s gates sit underneath: campaigns are born paused, and spend switches and deletes need an explicit confirmation.

What it costs

Adding Hermoso to Gemini costs nothing extra: there is one credit meter, and it does not care which client called. A free account starts with 30 credits at signup and 250+ more to earn. Credits are spent only on AI models and Ad Spy research; posting, scheduling, ads management and analytics are free on every channel except X, which bills per call because X charges per API request. Paid plans are $19, $49 and $149 a month for 1,000, 3,000 and 10,000 credits, and every feature is on every plan. hermoso_capabilities gives the exact credit price of any render before it runs.

Troubleshooting

• The consent page asks you to sign in. Sign in with the Hermoso account that holds your brand, then approve. If you run several brands, ask Gemini to list them with list_brands and switch with use_brand.
• A channel is missing. Connect it in Hermoso under Settings → Connectors, then ask Gemini to run list_connectors again.
• Gemini answers without using Hermoso. Name it in the request: “use Hermoso to …”. That leaves no doubt about which tools should do the job.
• Add a custom app is missing. Check Google’s requirements: a personal Google Account, 18 or over, in the US, Keep Activity on, Gemini set to English, and the web app rather than a mobile app.

Beyond publishing

Publishing is the last step, and it is the smallest one. The same connection gives Gemini the Meta, Google and LinkedIn ad libraries plus organic TikTok, Instagram, YouTube, Reddit and Threads for research; 100+ image, video, voice and writing models on a single credit meter, with UGC avatars, dubbing, upscaling and native HTML ad formats; and the full campaign tree on eleven paid platforms. There are no per-vendor API keys to hold and no separate app to learn.

See the full tool list, every agent Hermoso works in, or what a marketing MCP is.

Hermoso in other agents

The same Hermoso account works in every agent below, so your brand, library, schedule and credits follow you between them.

Frequently asked questions

Can Gemini post to social media?

Yes, once you connect Hermoso's MCP server. Gemini can then publish to Facebook, Instagram, Threads, TikTok, YouTube, X, LinkedIn, Pinterest, Bluesky and Telegram, and schedule to all ten from one queue with per-channel captions.

How do I add Hermoso to Gemini?

In the Gemini web app, open Settings, Connected Apps, add a custom app with https://app.hermoso.ai/mcp and approve it with your Hermoso account. There is no key to paste. Google’s requirements for custom apps today: you are 18 or over and in the US, signed in with a personal Google Account (work and school accounts cannot use it yet), with Keep Activity on, and using Gemini in English. The steps are quoted from Google’s help article “Connect & manage custom apps for Gemini Apps”, read on 2026-10-03, and documented rather than run here. Hermoso is not affiliated with or endorsed by Google.

Can Gemini run my Meta and Google ad campaigns?

Yes. Gemini can build the whole tree on Meta, Google Ads, Microsoft Advertising, Reddit Ads, LinkedIn, Pinterest, X Ads, TikTok Ads, Snapchat Ads, ChatGPT Ads and Apple Search Ads. The summary you get is built from a read-back of what the platform actually stored.

Does using Hermoso from Gemini cost extra?

No. There is one credit meter and it does not care which client called. A free account starts with 30 credits plus 250+ earnable; paid plans are $19, $49 and $149 a month for 1,000, 3,000 and 10,000 credits. Publishing is free on every channel except X, which bills per call because X charges us per API request.

Is it safe to let Gemini post and run ads for me?

Hermoso keeps the steps that cost money or cannot be undone behind gates on its own server, whatever Gemini is set to do: every campaign is created paused, spend switches and deletes need an explicit confirmation, and a post only reaches an account you connected and ticked in Hermoso. Google says write actions from a custom app need your manual confirmation, so a publish or a schedule is a step you approve in the chat. Hermoso’s gates sit underneath: campaigns are born paused, and spend switches and deletes need an explicit confirmation.

Can I use Hermoso in the Gemini app with a Google Workspace account?

Not yet. Google says custom apps are not available when you sign in to the Gemini app with a work or school Google Account. Gemini Enterprise has its own admin-managed MCP setup.