Notes on making AI useful at work.

Product thinking, field notes, and engineering choices from the team building an AI coworker that does the work, not just talks about it.

Written by Shelden ShiCo-founder and CTO

FeaturedProduct

November 4, 2026 · 6 min read

How to automate weekly Slack reports with PostHog and Stripe

Connect product and billing data, check a one-off report, and turn it into a weekly Slack routine with clear metrics, sources, and ownership.

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Latest notes

Practical ideas for handing real work to AI while keeping context, control, and accountability intact.

News
October 29, 2026 · 3 min read
OpenTag is officially approved for the Stripe App Marketplace
OpenTag is now in the Stripe App Marketplace. Ask about payments, customers, and invoices in Slack, and bring the answers back to the conversation where your team works.
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News
October 8, 2026 · 3 min read
OpenTag has completed its SOC 2 Type I examination
Prescient Assurance examined the design of OpenTag’s controls relevant to Security as of September 23, 2026. Our report is now available by request.
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News
July 5, 2026 · 4 min read
OpenTag is backed by Y Combinator
OpenTag is part of Y Combinator’s Summer 2026 batch. We’re building the model-agnostic AI coworker we wanted when we were running every job ourselves.
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News
September 1, 2026 · 3 min read
OpenTag is officially approved for the Slack Marketplace
It’s official: Slack has approved OpenTag for listing in the Slack Marketplace. We built OpenTag for the place teams already work, and we love Slack.
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Product
August 28, 2026 · 5 min read
The best AI interface is already open
Work does not begin in a blank prompt. It begins in a thread, surrounded by the people, decisions, and tools that give it meaning.
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Trust
August 21, 2026 · 6 min read
AI work needs a handbrake, not a disclaimer
Confidence is not permission. Useful agents need hard approval gates before anything expensive, public, or irreversible.
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Field notes
August 14, 2026 · 4 min read
What a useful weekly report actually contains
A dashboard shows numbers. A useful report explains what moved, why it matters, and what the team should decide next.
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Engineering
August 7, 2026 · 5 min read
Model choice should be infrastructure
Teams should describe the work they need done. Choosing the right model for each step should happen underneath the product.
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Product
July 31, 2026 · 4 min read
From repeated request to reliable routine
The third time a team asks for the same outcome, the system should notice, and offer to take the next one.
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Less prompting. More finished work.

Add OpenTag to Slack, connect the tools your team approves, and give it the job that keeps getting pushed to next week.

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Notes on making AI useful at work.

How to automate weekly Slack reports with PostHog and Stripe

Latest notes

OpenTag is officially approved for the Stripe App Marketplace

OpenTag has completed its SOC 2 Type I examination

OpenTag is backed by Y Combinator

OpenTag is officially approved for the Slack Marketplace

The best AI interface is already open

AI work needs a handbrake, not a disclaimer

What a useful weekly report actually contains

Model choice should be infrastructure

From repeated request to reliable routine

Less prompting. More finished work.