LeadOceanLeadOcean Review 2026: B2B Data API & MCP Built for AI Agents
In short
- LeadOcean is a B2B data platform designed for AI agents and developers rather than for clicking through a web app.
- You get people and company search, plus work-email and phone enrichment, over a REST API and an MCP server.
- Plans run from a free tier (1,000 records for life) to Solo, Agency and Platform, the last of which includes a resell-and-embed licence.
- It suits teams building agents, enrichment pipelines or products. If you want a ready-made prospecting app, look at an app-first tool instead.
What LeadOcean is
Most B2B data tools are built around a web app: you search, click, export a CSV. LeadOcean starts from the other end. Its tagline is “B2B data for AI agents”, and the product is an API and an MCP server first, with a dashboard for keys, usage, docs and billing.
That matters if your workflow is code or an AI assistant. An agent can search for companies and people that match a brief, enrich the ones it picks with a work email or phone number, and hand the results to the next step: a CRM, a sequence or a spreadsheet, without anyone exporting files.
What you can do with it
Search people and companies
Search endpoints filter by the things you'd expect in B2B prospecting: job title and level, industry, company size, country and more. Company endpoints let you look up a domain and list the people who work there, which is useful for account-based work where you start from a list of target companies.
Enrich a contact
Enrichment takes a person (for example by LinkedIn profile URL) and returns their current role and company, plus contact details such as work email addresses with a status for each. A separate phone endpoint returns mobile and direct numbers where available.
Use it from an AI assistant (MCP)
The MCP server exposes the same capabilities as tools. Claude, ChatGPT and other MCP-compatible clients or agent frameworks can call them directly, so a prompt like “find heads of logistics at US food manufacturers with 200–1,000 staff and get their work emails” becomes a sequence of tool calls rather than an afternoon of manual research.
Developer tooling
The dashboard includes API docs, an API explorer for trying requests in the browser, API key management and a usage page that shows how much of each plan window you have used.
Pricing and plans
LeadOcean publishes its plans on its billing page. At the time of writing (October 2026) the public list prices are:
| Plan | Price | Built for | What you get |
|---|---|---|---|
| Free | $0 | Trying the data | 1,000 records for life; every feature and the whole database; 5 requests a second, 1 key; docs |
| Solo | $97 / month | One person | 10,000 enrichments every 5 hours, 50,000 a week |
| Agency | $497 / month | Agencies and RevOps teams | 1M enrichments a day and 25M search records a month (both raisable); phone numbers and exports included (50k rows a file); use for your own and your clients' work; email support; 200 requests a second, 5 keys |
| Platform | $1,997 / month | Products that embed the data | Custom fair use, raised in writing; resell and embed licence; private Slack channel and uptime SLA; 10,000 requests a second, 20 keys |
Two details are worth reading closely before you choose. First, limits are expressed as fair-use windows (per 5 hours, per week, per day or per month depending on the plan), so plan your batch jobs around the window rather than assuming unlimited throughput. Second, the licence differs by plan: Solo is for one person, Agency covers your own and your clients' work, and only Platform includes the right to resell or embed the data in a product.
Who it suits
- Teams building AI agents. If your SDR agent, research agent or internal assistant needs fresh B2B contact data, an MCP server and a clean API are exactly the right shape.
- RevOps and growth engineers. Enrichment pipelines, CRM hygiene jobs and lead routing benefit from high request rates and per-day windows sized for batch work.
- Agencies running prospecting for several clients, which the Agency plan's licence explicitly covers.
- Product teams that want to embed B2B data in their own software, on the Platform plan.
Getting started
- Create a free account at leadocean.io and generate an API key.
- Open the API explorer and run a people search for a segment you know well. Spot-check the results against people you know.
- Enrich a handful of contacts and look at the email statuses and phone types returned.
- Connect the MCP server to your assistant and try a real prospecting brief end to end.
- Only then size a plan: count how many lookups a day your workflow really needs.
Things to check before you build on it
- Coverage for your markets. Every B2B database is stronger in some countries and industries than others. Test your exact segments; the free 1,000 records are enough for that.
- Verify before you send. Treat any enriched email as a candidate until it is checked. Run addresses through an email verifier before a campaign and keep bounces under 2%.
- People change jobs. Re-enrich contacts you plan to reach months later; a current-role check catches people who have moved on.
- Respect the windows. Build retries and pacing into batch jobs so they slow down gracefully instead of failing when a window is reached.
- Compliance. Make sure your outreach follows the rules where your contacts live (for example GDPR in the EU and UK, CAN-SPAM in the US).
API-first vs app-first: which do you need?
The deciding question is who does the work. If code or an AI agent does the searching and enriching, an API-first platform like LeadOcean is the natural fit. If people on your team do the prospecting by hand (filtering, saving lists, unlocking contacts one at a time and exporting to a CRM), an app-first tool will be faster for them day to day.
Sendburg is an example of the app-first approach: a web app and Chrome extension for finding decision makers, with emails checked when you unlock them, CSV enrichment, exports and an AI connector for Claude and ChatGPT. Many teams use both kinds of tool: an API for automation, an app for the people doing outreach.
FAQ
What is LeadOcean?
A B2B data platform built for AI agents and developers: people and company search plus email and phone enrichment, available over a REST API and an MCP server.
Is there a free plan?
Yes. It includes 1,000 records for life with every feature and the whole database, at 5 requests a second with one API key.
Can I use it with Claude or ChatGPT?
Yes. The MCP server lets MCP-compatible assistants and agent frameworks call its search and enrichment tools directly.
Which plan lets me put the data inside my own product?
Only Platform includes a resell-and-embed licence. Agency covers your own work and your clients' work; Solo is for one person.
Do I still need to verify emails?
Yes, as with any data source. Verify addresses before a campaign; it protects your sending reputation and keeps bounce rates low.
Check emails before you send. Whichever tool your contacts come from, a quick verification step keeps bounces down and your domain healthy. Sendburg's free email verifier checks single addresses in seconds.