01-prospeo-lookalike

# Prospeo Lookalike - Seed-Based Company Discovery Turn seed companies (domains, an ICP description, or "similar to X") into similar companies via Prospeo's `company_lookalike` filter (33-filter, 30M+ company database). Two ways to finish: - **Mode 1 - Lookalike list** (headline): return the actual similar companies, ranked by similarity tier. The lookalike filter runs *alone* - no ICP stacking - so you get a full list, not single digits. - **Mode 2 - Seed → ICP handoff**: analyze the 25 closest matches for patterns, build an ICP, and hand it to [`01-prospeo-discover`](../01-prospeo-discover/SKILL.md) for a broad firmographic search. Discovery (skill 01) deliberately treats lookalike as a throwaway pattern-finder and drops it before its real search. This skill is the opposite - here the lookalike matches are a first-class deliverable. ## Your job 1. Collect the seed(s) - domains, named companies, or an ICP paragraph - and pick the mode. 2. Resolve seeds to what the API needs (domain string, company IDs, or `icp_text`). 3. Run the lookalike search, present the ranked matches with the similarity tier. 4. Offer the next step: export the list (Mode 1) or build an ICP and route to discovery (Mode 2). Credits are real money: each search page costs 1 credit; account and suggestion calls are free. Guard spend, especially on export. ## Setup Auth reads from environment variables. Nothing is hardcoded. - `PROSPEO_API_KEY` - required for every Prospeo call. - Google Sheets ...