Apollo Alternatives for Claude and AI Agents (2026)

What are the best Apollo alternatives for Claude?

For prospecting inside Claude, the best alternative is the one that lets the agent finish the job from one connection. Layrcake does that: people and companies, verified emails, buying signals, public posts, sourced research and campaigns a person approves, paid per result with no seats. The others below are strong at a narrower part of the job.

1. Layrcake: the whole loop, paid per result

Layrcake is go-to-market infrastructure for AI agents. One MCP server gives Claude 22 tools: find people and companies, get and verify work emails, check companies against a question, read buying signals (hiring, funding, news), read public LinkedIn, X and Reddit posts and the people who engaged, research accounts with sources, and draft and launch campaigns. Launching returns an approval link for a signed-in person.

There are no seats. A credit is $0.01, a found work email is 5 credits, a verification 1.25, a lookup that finds nothing is free, and credits never expire. In our run on 1 October 2026, Claude took 20 heads of sales to 15 verified, ready-to-send drafts for 145 credits. See Layrcake vs Apollo for the side-by-side.

2. ZoomInfo GTM AI: enterprise data, now self-serve

ZoomInfo's GTM AI offers its company, contact and intent data through one API and an MCP server, free to start with 1,000 data credits and 1,000 AI credits, then pay-as-you-go from $20. Search, lookup and find-similar are free; credits go on enriched records and AI research (GTM AI pricing). It suits teams who want ZoomInfo's data inside Claude. Layrcake vs ZoomInfo compares the two.

3. Lusha: contacts and buying signals

Lusha calls itself "the B2B data and intelligence layer for GTM teams and AI agents", with contacts, company data and dated buying signals in Claude, ChatGPT and any MCP client. Its MCP server lists 50 tools and is in Claude's connector directory. Plans start free with 40 credits a month; API access comes with Pro (Lusha pricing).

4. FullEnrich: emails and mobiles from many sources

FullEnrich runs a waterfall across "25+ data sources" for work emails, personal emails and mobile numbers, and says "A lookup that returns nothing costs nothing". Its MCP is included on every plan, from a 50-credit free trial to Pro from $29 a month (FullEnrich pricing). A good fit when phone numbers matter most.

5. Crustdata: real-time data for agents

Crustdata describes itself as a "Real-Time B2B Data Provider for AI Agents", with people, company, job and post data and watchers. New accounts get $20 of credits, a search that comes back empty costs nothing, and real-time API access starts at four figures a month (Crustdata pricing). See Layrcake vs Crustdata.

6. Clay: enrichment workflows in a table

Clay calls itself "Infrastructure to get any data, run agentic workflows, and launch GTM plays", with 150-plus data providers in a table and a connector in Claude. Failed enrichments are not charged. Its pricing cards on 18 October 2026 show a free plan and paid plans from $167 a month (Clay pricing). We compared working in Claude with working in Clay in Claude vs Clay.

7. Seamless.AI: a large contact base

Seamless.AI offers verified contacts and direct dials, with an MCP server of "54 tools across 11 domains, from search to send" that signs in with OAuth. Search is free and credits are used on enrichment; paid pricing is quoted on request (Seamless.AI MCP).

How do you choose?

Ask what the agent has to finish. If it is a list, any data tool above will do. If it is outreach (a checked list, a reason to write to each person, a sequence, a send a person approved and the replies), choose the tool that covers that in one connection and charges only for results. That is what we built Layrcake for. Connect it to Claude in about two minutes; new accounts get 300 free credits.

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