10 types of AI agents worth building for B2B marketing

Everyone is selling AI agents. Here’s what Blue Seedling’s team of 20 real B2B marketers actually uses every day in real client work.

No hype. No “swarm of agents replacing your team.” Just real workflows that save real time.

1. The testimonial writer

Reads a customer’s LinkedIn, the client’s site, and the relevant Slack channel (#customer-X), then drafts quotes in the customer’s voice. Full customer testimonials with zero interviews, just the context we already have.

2. The events coordinator

Cielo Gil’s Claude Cowork agent reads the Slack context, researches venues, builds a color-coded tracker, saves a formatted Google Sheet to Drive, and drops ready-to-send outreach emails into Gmail with the right contacts filled in.

3. The pitch deck generator

Cielo Gil’s Google Apps Script agent takes a filled-out form, copies our sales deck, swaps in the prospect’s name, picks case studies and testimonials by vertical, and flags what still needs a human. A custom deck in minutes.

4. The 1:1 agenda sender.

Pulls this week’s agenda from a running doc and sends the meeting email with one click. Laura Montagna built a Google Apps Script agent in ten minutes, no coding, and it stays entirely inside Google (no third-party tool touching your Gmail).

5. The PDF QA reviewer.

Reviews long documents in two modes at once, raw text and rendered images, and catches what each mode misses: text nails typos, visual kills false alarms and catches spacing issues. Clayton Noblit made it our standard for document QA.

6. The monthly reporting agent

Martina Eder’s Claude agent reads LinkedIn and HubSpot exports and returns a clean table of the month’s metrics.

7. The on-brand deck builder

Works strictly inside a client’s existing slide template, treating it as a hard constraint instead of a starting point. Timothy Jung’s Claude agent gets on-brand accuracy across every deck, none of the telltale AI deck look.

8. The sales-call brain.

Reads every Fathom call transcript and answers on demand: what did this prospect say, what’s the follow-up. No more blurring calls together.

9. The Skill factory.

Not one agent but a habit: reusable Skills for recurring work, from investor amplification emails to the webinar-to-LinkedIn post generator. Build once, the whole team reuses it.

10. The daily to-do assistant.

Reads Minal Mehta’s Slack DMs and open items every morning and sends her a Slack summary to start the day. Inbox-zero peace of mind, built in Cowork.

🌟 Bonus, very meta: The “Real AI,” agent that wrote this blog. 

Reads our entire #ai Slack channel, pulls the best use cases, anonymizes client details, and drafts it in my voice. I edit and publish. 

The thread running through all of it

There’s a human in the loop, every time. AI is the amplifier. The marketer is still the one who knows what good looks like.

Netta is the founder and CEO of Blue Seedling. She loves third wave coffee, thin crust pizza, and B2B marketing.

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