# Lead Enrichment

> Lead enrichment is filling the missing fields on a lead or account record, such as title, headcount, or tech stack, from data sources outside your own system.

Lead enrichment is filling the missing fields on a lead or account record from outside data sources. Modern tools waterfall several vendors in sequence and take the first hit, which raises coverage and turns enrichment into a metered cost. Anything a model infers rather than looks up needs checking before a rep repeats it.

**Lead enrichment is filling the missing fields on a lead or account record, such as job title, company headcount, funding, or technologies used, from data sources outside your own system.** It is the unglamorous foundation under most outbound work, because a segment you cannot describe is a segment you cannot target.

The mechanics changed twice in recent years. First, waterfalling: instead of buying one database and living with its coverage gaps, tools like [Clay](/tools/clay) run 150 to 200-plus providers in sequence for the same field and take the first hit, under a single bill. Second, agentic enrichment: rather than looking a value up, an agent browses live sources and returns any field you describe in words. That reaches data no vendor packages, at the cost of provenance.

The single-database shape still exists and still works. [Apollo](/tools/apollo) sells its own contact database with outbound tooling attached, and [ZoomInfo](/tools/zoominfo) positions itself explicitly as the grounding data an agent calls rather than the agent itself. The choice between orchestrating vendors and buying one is the subject of [Clay vs Apollo](/guides/comparisons/clay-vs-apollo).

Two things to watch. Enrichment is metered, usually in credits, so cost tracks volume rather than headcount and the advertised entry tier is often a floor. And enrichment quality is a [grounding](/glossary/grounding) problem: a field that was looked up has a source, a field that was inferred has a guess. Verify before a rep repeats it.

The full tooling picture is in [the best AI sales tools in 2026](/guides/comparisons/best-ai-sales-tools-2026), and the workflow around it is in [Claude for sales teams](/guides/sales/claude-for-sales-teams).

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_Source: https://agentscamp.com/glossary/lead-enrichment — Term on AgentsCamp._