This is an example of an agent you can build in Sylvie: a captioning agent that starts from the picture itself. Point it at a photo (a packshot, an event frame, a customer repost, a behind the scenes shot) and it writes the caption that ships with it, in the length and register the destination channel expects, plus the credit line the image owes. It runs on your brand brain (voice, live campaign messaging, correct product names and prices, credit and usage rules, past captions), and you assemble it inside Sylvie rather than switching on a finished tool.
Sylvie does not ship this agent pre-built. It is an example of an agent your team can build with Sylvie, powered by your brand brain, so it runs your workflow the way you actually run it.
Photo Post Caption is an example of what a social or content team can build on top of its brand brain. It works from the image rather than from a brief: it reads what is actually in the frame (the product, the setting, the people, the mood) and writes a caption that adds something to the picture instead of narrating it.
Photo posts are the highest volume, lowest brief content a team ships. One shoot or one event produces hundreds of usable frames, and every frame needs a line that sounds like the brand, names the product correctly, respects the credit and usage terms, and does not repeat the last three posts. That is exactly where captions get rushed, generic or factually wrong, and an agent built on the brand brain is what stops the drift.
The agent reads the brain before it writes: the brand voice and the tone that account keeps, the campaign messaging that is live right now, the correct names, prices and materials for what is in the shot (so last season's model does not get captioned with this season's name), the credit and usage rules attached to that shoot, and the words the brand does not use. It also sees the captions already written for the set, so a folder of twenty images does not come back as twenty variations of one sentence.
Then it works inside Sylvie: you drop in an image or a full selects folder, choose the channel and the goal, and it returns the caption, the credit line and, if you want it, an accessible image description. Anything it cannot confirm from the brain (a person's name, a price, whether the shot is cleared for paid use) comes back flagged rather than guessed, and the whole batch stays in one place with each caption traceable to the facts behind it.
The agent reads the frame itself, so the caption talks about what is genuinely in the shot rather than restating a brief written before the shoot happened.
Point it at the selects folder and it returns a caption per frame, so three hundred images become a captioned, schedulable library instead of an archive nobody opens.
The same photo ships as a two line Instagram caption, a longer LinkedIn note and a short Facebook line, each written for where it lands rather than trimmed to fit.
Photographer credits, license terms and clearance rules live in the brain, so no image posts without the line it owes or lands in a channel it was never cleared for.
It knows what it already wrote for the set and what the account posted last week, so one shoot can fill a month without the feed sounding like a loop.
Product names, materials, sizes and prices come from the brand brain rather than from what a model thinks it sees, so nothing ships with a detail you have to correct in the comments.
Photography is usually the most expensive asset a brand buys and the one that sits unused the longest, because captioning it is nobody's favorite afternoon. Here are real moments where teams point this agent at their brand brain and turn a folder of images into posts.
Three hundred frames come back, forty make the selects, and captions are the only thing standing between the shoot and the calendar. The agent captions the whole set in one pass with the correct product names, so the shoot reaches the feed that same week instead of aging in a drive for a month.
The photographer drops a batch every hour from a launch party or a conference. The agent captions each batch against the event messaging and the brand voice, so posts go out live during the day rather than as a Friday recap that nobody engages with.
A customer posts a genuinely good shot of the product. The agent writes the caption that credits the creator, ties the image back to the product promise and asks for the right next action, so social proof becomes a steady stream instead of an occasional manual repost.
Store or restaurant managers send a photo of the day from twenty locations. The agent returns an on-brand caption for each one, so the whole network posts daily in a single voice without putting a social manager in every store.
An ecommerce brand has hundreds of packshots and lifestyle images already paid for and unused. The agent captions the queue with the right names, materials and prices, so months of feed content come out of assets that were sitting in a folder.
Someone shoots the offsite, the new hire's first morning and a Friday in the studio. The agent writes warm, on-brand captions that fit the employer brand, so the culture feed stays alive without costing the social lead an afternoon every week.
It works from the image. You can add context (which campaign it belongs to, which channel it is for, what the post should achieve), and anything it cannot verify from the picture or the brain, such as a person's name or a price, comes back flagged rather than guessed.
No. It is an example of an agent your team builds inside Sylvie on your own brand brain. Sylvie holds the voice, the product facts, the campaign messaging and the usage rules, and you assemble the captioning agent on top of them so it writes for your brands specifically.
This one starts from images and is built for volume across channels, where a platform writer starts from a brief for one feed. Most teams build several social agents on the same brain, so the photo captioner and the channel specialists share one voice, one set of facts and one set of rules instead of drifting apart.
Yes. Each brand or client has its own brain, so a minimalist interiors label and a loud sportswear account get captions that match their own photography and tone, from the same agent design pointed at different brains.
The brain is the source of truth: names, prices, materials, seasons and approved claims all live there, and the agent writes from them rather than from what it infers from the picture. When the brain has no answer, it says so instead of filling the gap.
A brain with your voice, a sample of past captions, your product facts and your credit and usage rules. Teams usually start with one account and one shoot, review the first batch closely, and expand once the brain has learned where their line sits.
Book a demo and we will map the workflows worth turning into agents, and show how each one runs on your brand brain.
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