# Best lead, contact and company data APIs for AI agents (slim)

> ZoomInfo API + MCP (BB), People Data Labs (B) and Apollo API + MCP (B) lead the 16 ranked lead, contact and company data APIs. Picks by need, strengths, weaknesses and prices from the Anchor benchmark.

- Full: https://www.anchorterminal.com/best/lead-data/index.md (~5,300 tokens) · this version ~1,380 tokens · JSON https://www.anchorterminal.com/best/lead-data/index.json · canonical https://www.anchorterminal.com/best/lead-data/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

The 10 highest-scoring of 16 lead, contact and company data APIs on the Anchor benchmark, with a pick for each need and where each one falls short. Scores come from public evidence, re-checked as vendors change.

- Ranked: 16 · agent-ready (BB or better): 1 · accept x402: 0 · hosted endpoints: 16
- Full ranked table: https://www.anchorterminal.com/categories/lead-data.md
- Head-to-head comparisons: https://www.anchorterminal.com/compare/lead-data/index.md (120)
- Methodology: https://www.anchorterminal.com/benchmark/index.md

## The shortlist

| # | Tool | Grade | Score | Best for | Price | Where |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | [ZoomInfo API + MCP](https://www.anchorterminal.com/tools/zoominfo.md) | BB | 72.2 | Sales and marketing agents that need company, contact, intent and business-event data from one vendor, with free search before paid enrichment. | $0.38 / credit | hosted |
| 2 | [People Data Labs](https://www.anchorterminal.com/tools/people-data-labs.md) | B | 64.2 | Products and pipelines that enrich or search person and company records at volume and can write Elasticsearch or SQL queries. | $98 / mo | hosted |
| 3 | [Apollo API + MCP](https://www.anchorterminal.com/tools/apollo.md) | B | 63.3 | Building prospect lists by title, seniority, location and firmographics, then pushing them into Apollo's CRM and sequences. | $49 / seat-mo | hosted |
| 4 | [Coresignal API + MCP](https://www.anchorterminal.com/tools/coresignal.md) | B | 62.9 | Company and workforce research, headcount history and hiring signals at volume, and for pipelines that want raw records. | $49 / mo | hosted |
| 5 | [Lusha API + MCP](https://www.anchorterminal.com/tools/lusha.md) | B | 62.3 | Sales teams that want contact and company enrichment, signals and prospecting from one vendor, with a free plan to start. | $49.90 / mo | hosted |
| 6 | [LeadMagic API + MCP](https://www.anchorterminal.com/tools/leadmagic.md) | C | 60.2 | Verification and email or mobile finding in automated pipelines, especially at volume on the plans with credit-free search. | $99 / mo | hosted |
| 7 | [FullEnrich API + MCP](https://www.anchorterminal.com/tools/fullenrich.md) | C | 59.6 | Maximising find rate on known contacts, especially mobiles, without a long-term contract. | $55 / mo | hosted |
| 8 | [Hunter API + MCP](https://www.anchorterminal.com/tools/hunter.md) | C | 56.5 | Finding and verifying work emails from a domain or a name, where GDPR handling of the people looked up matters. | $49 / mo | hosted |
| 9 | [Enrich Layer API + MCP](https://www.anchorterminal.com/tools/enrich-layer.md) | C | 55.8 | Teams migrating Proxycurl code or doing per-profile lookups at low unit cost without a subscription. | $0.10 / credit | hosted and local |
| 10 | [Crustdata API + MCP](https://www.anchorterminal.com/tools/crustdata.md) | D | 53.4 | Agents that monitor companies, people, jobs or posts over time and need change notifications. | Pay per use | hosted |

## Picks by need

- Highest score overall: [ZoomInfo API + MCP](https://www.anchorterminal.com/tools/zoominfo.md), BB, 72.2/100 on the benchmark. Also [People Data Labs](https://www.anchorterminal.com/tools/people-data-labs.md), B, 64.2/100.
- Schema & documentation: [LeadMagic API + MCP](https://www.anchorterminal.com/tools/leadmagic.md), 93/100 on schema & documentation, against 84 for the overall leader.
- Agent ergonomics: [Prospeo API + MCP](https://www.anchorterminal.com/tools/prospeo.md), 79/100 on agent ergonomics, against 71 for the overall leader.
- Maintenance & community: [Coresignal API + MCP](https://www.anchorterminal.com/tools/coresignal.md), 82/100 on maintenance & community, against 76 for the overall leader.
- Transparency & trust: [Lusha API + MCP](https://www.anchorterminal.com/tools/lusha.md), 80/100 on transparency & trust, against 75 for the overall leader.

## How to choose

- Search, enrichment or verification: Check which of search, enrichment or email verification each endpoint performs, because they are scored separately and an agent needs the right one for each step.
- Match rate and field completeness: Test match rate and field completeness on your own domains and names, since headline coverage may not hold for the companies your agent will target.
- Email validity and stale records: Check how emails are verified and how often records are refreshed, since stale addresses bounce and waste the outreach an agent sends.
- Data reuse and retention: Read the data reuse and retention terms, since some services limit whether an agent may store, share or train on the records it returns.

- How the benchmark tests this category: The same 50 company domains and 50 named prospects through every provider. We measure match rate, field completeness, email validity, stale records, latency and cost per usable record, and score search, enrichment and email verification separately.

Each listing's verdict, strengths and weaknesses: https://www.anchorterminal.com/best/lead-data/index.md