Announcing our $20m Series A.  
Sequence

Merlin Kafka

· October 7, 2025

Building a human in the loop interface

We're starting to see the early signs of a new operating model for software. One where agents anticipate what operators need and complete multi-step workflows autonomously. Instead of humans operating software, humans oversee agents operating the software.

Building a human in the loop interface

Most B2B software works something like this: You log in to a dashboard to complete a workflow, update a record, query some data or generate a report. The interface is designed for a human operator to complete tasks.

We're starting to see the early signs of a new operating model for software, where agents anticipate what operators need and complete multi-step workflows autonomously. Instead of humans operating software, humans oversee agents operating the software.

This creates some surprising interface challenges: How does a user even know what work was completed?

When value becomes invisible

When AI agents work silently in the background, their value becomes less visible to operators.

Imagine an agent that parses sales contracts, answers billing questions, and reviews invoices automatically. From a technical perspective, it's remarkable. But as a user, I'm left wondering: What just happened? What did the AI actually do? Can I trust it? Should I be worried that I didn't see it happen?

There’s also a commercial friction point. Software that delivers value invisibly risks being forgotten (and replaced). The optics are important.

Resolving this tension requires interfaces that surface completed work in ways that build trust, demonstrate value, and enable control.

Command centers as a new interface

A new paradigm around human-in-the-loop interfaces is slowly emerging. These interfaces are a hybrid of an inbox, ticketing system and audit log.

Making AI decisions auditable by default

In sensitive domains like finance, healthcare, or legal, work has to be auditable. Command centers log every action an agent takes. What it did, what data it used, what reasoning led to the outcome. Operators can trace any decision back to its source.

Surfacing invisible work

Command centers make autonomous work visible through activity feeds. Operators see exactly what was completed: 47 contracts processed this week, 3 items requiring review, etc. If you’re selling this type of software, it now becomes straightforward to show value: "Our agents processed 2,400 contracts this quarter." It’s now obvious that this agent is doing real work.

Handling approvals

Complex situations require human judgment and edge cases need manual review. Command centers serve as a unified interface for exceptions and escalations across all agent workflows.

Collapsing vertical workflows into one interface

Traditional software organized itself around discrete actions users performed. Agents don't need to respect these boundaries. A contract parsing agent might touch billing, revenue recognition, and customer provisioning in a single workflow. A unified command center emerges as a natural consequence because the old "feature area" model no longer maps to how work actually gets done.

Implications for other domains

This pattern will become ubiquitous across B2B software.

Customer support teams will use command centers to review which tickets their AI resolved overnight and which require human empathy. DevOps teams will see which infrastructure issues were auto-remediated and which need manual investigation. Sales teams will check which leads the AI qualified, which demos it scheduled, and which prospects need a personal touch.

Fundamentally, humans don't want to be removed from the loop - they want to be elevated, focusing on judgment, oversight, and exceptions rather than repetitive execution.

How we're applying this at Sequence

At Sequence, we're building AI-first revenue automation for B2B finance teams. We started with a question: if agents are handling repetitive busywork like parsing contracts autonomously, how do finance operators maintain control?

Sequence Watchtower


Today we're launching Watchtower: a centralized command center where operators review and approve AI-completed work. Finance teams open Watchtower and immediately see what their agents have done. Every action is auditable. Operators can approve routine work or dig into specific decisions when needed.

With Watchtower, work completed by agents becomes visible, auditable, and controllable.

Merlin Kafka

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