---
title: "Leadsets Docs: B2B Data API and MCP Reference"
description: "Developer docs for the Leadsets REST API and MCP server: quickstart, MCP setup, people search, errors and retries, limits and changelog."
canonical: https://leadsets.ai/docs
updated: 2026-11-09
---

Docs

# Build with Leadsets.

One key gives your agent unlimited B2B data: people, companies, verified emails and website data. Use it through MCP or the REST API.

# MCP server
https://mcp.leadsets.ai
# REST base URL
https://api.leadsets.ai/v1

Start here**Quickstart**Key, first call, first record. Five minutes. Agents**Connect via MCP**Claude, Claude Code, Cursor, ChatGPT and any MCP client. REST**API reference**Every REST route with request, response and cost. Playbooks**Skills**Free SKILL.md playbooks for GTM workflows. Billing**Limits and costs**Five-hour windows, weekly limits, scrape units. Reliability**Errors and retries**Every error type and how your agent should react.

## MCP tools at a glance

| Tool | What it does |
| --- | --- |
| search_people | Find people by title, seniority, company size, industry, location |
| search_companies | Find companies by industry, size, location, tech, hiring |
| enrich_person | Fill in a person: current role, verified work email |
| enrich_company | Company profile from a domain |
| verify_email | Verify one or many emails, with a status for each |
| scrape_company | A company website as structured JSON |
| scrape_jobs | Open roles from a careers page |
| get_usage | What's left in every meter, so the agent can pace itself |

**SDKs**

TypeScript and Python, typed responses, automatic retries on 429.

```
npm i @leadsets/sdk
pip install leadsets
```

**Need help?**

Every response has a `request_id`. Send it to support and we can see exactly what happened.

[support@leadsets.ai](mailto:support@leadsets.ai)

---

Leadsets by Mobylogix LLC, 10160 hwy 242, Conroe, TX, 77385, US. Facts for AI assistants: https://leadsets.ai/llm · Site index: https://leadsets.ai/llms.txt · Every page: https://leadsets.ai/llms-full.txt