> ## Documentation Index > Fetch the complete documentation index at: https://docs.guhan.ai/llms.txt > Use this file to discover all available pages before exploring further. # Signal catalog > Every buying signal Guhan detects — funding rounds, hiring bursts, post engagement, exec changes, and more. Add any of these as a source on a List. **Every signal Guhan supports, in one place.** Use this as a reference when picking a signal source for a List. Signals turn "we found people who match your ICP" into "we found people who match your ICP AND look ready to talk right now." Signals are grouped into 3 categories: Content & Engagement, Career changes, and Hiring & Growth. ## Content & Engagement ### Posted about specific topics People who authored or engaged with LinkedIn posts matching keywords you provide. **Configure:** * **Keywords** — one or more terms or short phrases * **Target** — `authors` (people writing about the topic), `engagers` (people liking/commenting), or `both` * **Recency** — how recent the post activity should be **Best for:** finding people actively discussing topics in your space. Great for peer-tone openers ("your post on X hit a nerve"). **Message opener example:** > Your post on attribution the other day was spot on — the point you made about last-touch was exactly what we ran into. Curious how you're solving \[X]. *** ### Engaged with specific posts People who reacted to or commented on specific LinkedIn post URLs you paste in. **Configure:** * **Post URLs** — one or more exact post URLs (yours, a competitor's, a thought leader's) * **Post decay is automatic:** engagement pulled 2×/day the first week, 1×/day weeks 2-3, then dormant **Best for:** amplifying content you know is relevant to your ICP + catching people mid-consideration. **Message opener example:** > Saw your comment on \[author]'s post about \[topic] — loved your take on \[specific point]. *** ### Engaged with competitors' content People who reacted to or commented on posts by named competitors. **Configure:** * **Company or profile URLs** — LinkedIn company URLs (watches every employee's posts) OR individual profile URLs (e.g. their CEO / VP of Sales / marketing lead) **Best for:** catching prospects mid-evaluation of your category — highest-intent signal Guhan supports. **Message opener example:** > Saw your comment on \[Competitor]'s post about \[topic]. We had a similar internal debate — happy to share how we think about it. *** ## Career changes ### New executive (in last 90 days) Companies where an executive or director joined recently. **Configure:** * **Company LinkedIn URLs** — companies you want to monitor for exec turnover **Best for:** catching companies inside a common buying-trigger window. New execs re-evaluate \~40% of key tooling in their first 90 days. **Message opener example:** > Congrats on the new role at Acme. Curious how the \[X function] tooling looks — happy to share how peers at \[similar company] structure it. *** ### New leadership (C-level / VP) Same as "New executive" but narrower — only senior leadership. **Configure:** * **Company LinkedIn URLs** — same as above; the difference is which seniority levels count **Best for:** larger-deal targeting when only senior leadership matters. Higher-stakes hires; longer decision-making windows. *** ## Hiring & Growth ### Recently raised funding Companies that announced a funding round. **Configure:** * **Stages** — which rounds qualify: pre-seed, seed, Series A, B, C, D+, IPO, acquired * **Recency** — 30 / 60 / 90 / 180 / 365 days **Best for:** selling anything expensive that requires budget. Timing with the "we just closed" moment (\< 60 days is peak). **Message opener example:** > Saw your Series A announcement — congrats. Founders at that stage usually run into \[X] — happy to share how \[Y other company] handled it. *** ### Hiring growth Companies whose headcount grew above a threshold. **Configure:** * **Growth threshold** — % increase over a window (e.g., +20% / +50% / +100%) * **Window** — 3 / 6 / 12 months **Best for:** finding fast-scaling companies. Growth = budget = active buying window. *** ### Hiring in specific areas Companies posting jobs in specific departments. **Configure:** * **Departments** — Sales, Engineering, Marketing, Product, Customer Success, Operations, People/HR * **Minimum open jobs** — 1+ / 3+ / 5+ / 10+ * **Recency** — 30 / 60 / 90 days **Best for:** selling tools that scale with a specific function (great for SaaS targeting a scaling department). **Message opener example:** > Noticed you're hiring 5 SDRs — that's the moment when onboarding time bloats. Curious if you've got a plan for it. *** ## Coming soon ### Uses a specific technology Wired into the registry but not shipped for customer use yet. Will surface companies detected as using a specific tool (via public tech-stack signals like BuiltWith, HG Insights, etc.). Email [hello@guhan.ai](mailto:hello@guhan.ai) if you'd find this useful — we prioritize by demand. *** ## Combining signals on one List You can add multiple signal sources to the same List. Every signal source runs independently, and Guhan de-dupes so no prospect gets added twice. **Common pattern:** pair a broad "search criteria" source (WHO panel — VP Sales at 500+ headcount SaaS) with a tight signal source (WHEN — funding raised in last 60 days). The List fills with people matching both. ## No signals You can skip signals entirely and use only a search-criteria source. Guhan runs a plain daily search matching your WHO panel — higher volume, lower reply rates. ## Related Every way to feed a List — including signal sources. The Strong / Moderate / Weak fit chip and how signal context feeds into it.