One Brain to Query: Wiring a 60-Person Company into a Single Slack Bot

Re:One Brain to Query: Wiring a 60-Person Company into a Sin... by bob1029 on Thursday April 09, 2026 @12:45PM (#47705944)

> The bot took two and a half weeks to build; the data infrastructure under it took two years.

This is the key lesson that everyone needs to step back and pay attention to here. The data is still king. If you have a clean relational database that contains all of your enterprise's information, pointing a modern LLM (i.e., late 2025+) at it without any further guidance often yields very good outcomes. Outcomes that genuinely shocked me no fewer than 6 months ago.

I am finding that 100 tables exposed as 1 tool performs significantly better than 100 tables exposed as 10~100 tools. Any time you find yourself tempted to patch things with more system prompt tokens or additional tools, you should push yourself to solve things in the other ways. More targeted & detailed error feedback from existing tools often goes a lot further than additional lines of aggressively worded prose.

I think one big fat SQL database is probably getting close to the best possible way to organize everything for an agent to consume. I am not going to die on any specific vendor's hill, but SQL in general is such a competent solution to the problem of incrementally revealing the domain knowledge to the agent. You can even incrementalize the schema description process itself by way of the system tables. Intentionally not providing a schema description tool/document/prompt seems to perform better with the latest models than the other way around.

[ Parent | on HN ]

Re:One Brain to Query: Wiring a 60-Person Company into a Sin... by rick1290 on Thursday April 09, 2026 @03:44PM (#47708770)

Agreed. When I watch the llm start to explore the db - it really does impress me.

Can you expand on this:

You can even incrementalize the schema description process itself by way of the system tables. Intentionally not providing a schema description tool/document/prompt seems to perform better with the latest models than the other way around.

[ Parent | on HN ]

Re:One Brain to Query: Wiring a 60-Person Company into a Sin... by bob1029 on Thursday April 09, 2026 @04:14PM (#47709204)

If you tell GPT5.x that there is a database it can query by calling ExecuteSql(query), but you don't bother explaining anything about the schema, it will try figure things out ad-hoc. This has advantages for token budget because it will tend to only lookup the metadata for tables that seem relevant to the user's query.

If you have a gigantic data warehouse with 1000+ tables, there's no way you could fit all of that info into a system prompt without completely jacking something up in the blackbox. So, why bother trying?

Consider that the user's specific request serves as an additional constraint that can be used to your advantage to dramatically reduce the search space. Building a single prompt / schema description that will magically work for all potential user requests is a cursed mission by comparison.

[ Parent | on HN ]

Re:One Brain to Query: Wiring a 60-Person Company into a Sin... by operatingthetan on Thursday April 09, 2026 @02:05PM (#47707181)

I think context windows are too small for an agent to actually do this properly yet. I have much smaller databases and with 1b context frontier models they still need reminders or nudging or come up with completely wrong stuff in response to basic queries.

Having the c-levels relying on this for off-the-cuff info seems ... dangerous?

[ Parent | on HN ]

Re:One Brain to Query: Wiring a 60-Person Company into a Sin... by Stromgren on Thursday April 09, 2026 @04:33PM (#47709548)

I run a SaaS business on the side of my job and have been for 15 years. There’s a million questions I’ve never had the time to dig into although the data was there. Retention cohorts, free to paid tier conversions, subscription upgrades/downgrades and so much more. Just this week, I decided to just let an agent have access through psql and go nuts, writing all analysis to markdown files. Reading through it, there’s a few things it misunderstood and as a result, some of the analysis was flawed, but all in all I’m honestly mindblown. It would have taken me months to write queries and even just coming up with frameworks of how to think about these metrics.

[ Parent | on HN ]