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tam-builder

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Use this skill when the target market needs to become an actual enumerated list of companies — every organisation that could plausibly buy, with a verified size band, exact geography, and fit classification, deduplicated to one row per company. Companies only; contacts and email verification are a separate, later stage. Produces the company universe plus an honest coverage report. Trigger phrasings: "map the TAM", "build the TAM", "total addressable market", "pull every company", "target account universe", "who could buy this", "size the market", "list every company that", "refresh the TAM".

skills/tanyo-gochev/tam-builder/SKILL.md

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Nov 11, 2026

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237
Repository last updated
Oct 20, 2026
License
MIT

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Applies before any contact-level work. Produces one row per company with provenance on every field, plus a statement of what the build missed.

## Companies now, contacts later

Keep these stages apart. A TAM build that drifts into finding contacts and verifying emails produces a half-finished universe and a large bill, because enrichment and verification are priced per contact and you're paying for them on companies you haven't qualified yet.

Stage one answers one question: **which companies could buy this?** Nothing else.

## Retrieve, don't infer

Every field comes from a source that actually knows it, and every field carries provenance — where it came from and how confident it is. The temptation is to infer employee count from a website's feel, or geography from a top-level domain. Inferred fields look identical to retrieved ones in a spreadsheet and quietly corrupt every downstream filter.

Deduplicate on the root domain, not the company name. Names vary by legal entity, trading style, and punctuation; domains don't.
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