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Arwin Bosman
Arwin Bosman
PRO
PRO
@arwin
Sold software for nine years, couldn't build any of it. Now assembling the official record of European business into one searchable thing. In public, badly.
Shipped the MCP server public today. An agent asked over HTTPS with its own key and got back a real company, real hiring signal, real score with the weighting exposed so it can re-rank itself 
#agenticleadsourcing
First time any of the 2,623 dissolved companies was visible outside psql. An agent asked, and got "no longer listed in official records; last confirmed 1 July, absent by 1 August." No filing existed. We knew anyway #agenticleadsourcing
Went to verify the claim my whole pitch rests on. The archive was 2.2% true. 8,896 classified company events a day, thrown away after the expensive work was done, unrecoverable. Shipped the fix the same day #agenticleadsourcing
Found 2,623 company dissolutions my own system had already detected and never told anyone about. Been sitting in a table since the 1st #agenticleadsourcing
Shipped the product I've been describing for weeks. An email that says which companies moved this week, ranked by whether you can do anything about it #agenticleadsourcing
Burned $2 testing a data vendor. Found out searching by company name gives you the wrong company 43% of the time. Got someone in Massachusetts. Twice #agenticleadsourcing
Two European registries now feeding daily. Took three off-by-one errors, one namespace failure, and a counter that was printing a different counter's value under its own name #agenticleadsourcing
Wrote a filter that deletes 88% of my own data. Turns out "this company changed its board" is less impressive when the change was in 2008 #agenticleadsourcing
Fixed a broken model reference that would have silently emptied Sunday's data run. The job would have fired on schedule, exited zero, and produced nothing #agenticleadsourcing
spent 5 months thinking i had a demand problem. turns out my scraper was filing earrings as handbags, which made the "restocked" counter fire every time a different category got scanned. 46,491 fake restocks. 239,677 real emails about them 
#luxuryrestocks
found the bug that was cancelling every paying customer the same day they paid. shipping since march. i thought nobody wanted it #luxuryrestocks
Built a freshness check for every data source. First run found two feeds silently dead for 7 and 8 weeks, and a feature flag switched on that a written decision said should be off #agenticleadsourcing
asked 660 recruitment agency owners one question. 650 emails, 10 reddit DMs, some linkedin. one guy replied. he said cold outreach doesn't work anymore. he replied to a cold outreach 🤔 #agenticleadsourcing
Built a Reddit sourcing agent end to end. Best finding wasn't a reply: r/sales gave 0 relevant candidates in 1500 comments because it's employees, not owners #agenticleadsourcing
Built the Reddit sourcing transport for my ask campaign, then found my injection guard has silently passed sentence-case injections since May #agenticleadsourcing
Shipped a per-scheme status vocabulary. Two layers hardcoded one country's word for "trading" — the API would have told a customer a live French company was inactive #agenticleadsourcing