# Apollo.io documentation Research date: 2026-09-03 Documentation coverage: partial. Reference index, not a mirror of complete vendor documentation. Retrieved pages do not prove the MCP works. ## What it does A combined B2B contact database (265M+ contacts) and sales engagement platform in one product - prospect search/filtering, email and call sequencing, and contact/organization enrichment. ## Access and connection MCP support: official Access requirements: paid Authentication: OAuth (Apollo.io sign-in/authorization flow in the client) Research checked: 2026-09-03 These details come from catalog research. Check vendor sources for current setup instructions; this is not proof of a tested connection. ## Sources - https://github.com/apolloio/apollo-mcp-plugin - https://docs.apollo.io/docs - https://www.landbase.com/blog/apollo-pricing - https://hackingdemand.com/blog/apollo-io-pricing-2026 - https://www.warmly.ai/p/blog/apollo-pricing - https://docs.apollo.io/reference/people-enrichment ## Retrieved pages - https://github.com/apolloio/apollo-mcp-plugin (fetched) - https://github.com/apolloio/apollo-mcp-plugin/pulse (fetched) - https://github.com/apolloio/apollo-mcp-plugin/issues (fetched) - https://github.com/apolloio/apollo-mcp-plugin/actions (fetched) - https://github.com/apolloio/apollo-mcp-plugin/pulls (fetched) - https://github.com/apolloio/apollo-mcp-plugin/activity (fetched) - https://github.com/apolloio/apollo-mcp-plugin/forks (fetched) - https://github.com/apolloio/apollo-mcp-plugin/tags (fetched) - https://docs.apollo.io/docs/build-with-apollo (fetched) - https://docs.apollo.io/docs (fetched) - https://docs.apollo.io/reference/people-enrichment (fetched)