# FullContact vs ZoomInfo API + MCP (slim)

> ZoomInfo scores 72.2 (BB) to FullContact's 51.8 (D) for lead enrichment. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/fullcontact-vs-zoominfo.md (~2,750 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/fullcontact-vs-zoominfo.json · canonical https://www.anchorterminal.com/compare/fullcontact-vs-zoominfo
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-14

ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against FullContact's 51.8 (D), and leads in 6 of 7 scored categories. Both do lead enrichment.

- FullContact: D 51.8, rank #794 of 1076 · https://www.anchorterminal.com/tools/fullcontact.min.md
- ZoomInfo API + MCP: BB 72.2, rank #113 of 1076 · https://www.anchorterminal.com/tools/zoominfo.min.md
- FullContact, good for Agents that need to turn an email or phone number into a person profile, including consumer demographics and hashed-identifier matching.
- ZoomInfo API + MCP, good for Sales and marketing agents that need company, contact, intent and business-event data from one vendor, with free search before paid enrichment. Ahead on Reliability, 87 against 62; Schema & documentation, 84 against 70; Security & auth, 65 against 43; Payments & pricing, 40 against 10; Maintenance & community, 76 against 20; Transparency & trust, 75 against 61. Also Agent-ready, a grade of BB or better.

| Category | FullContact | ZoomInfo API + MCP |
| --- | --- | --- |
| Reliability (16%) | 62 | 87 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 70 | 84 |
| Agent ergonomics (13%) | 75 | 71 |
| Security & auth (14%) | 43 | 65 |
| Payments & pricing (10%) | 10 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 20 | 76 |
| Transparency & trust (7%) | 61 | 75 |

| Fact (where they differ) | FullContact | ZoomInfo API + MCP |
| --- | --- | --- |
| Vendor | J2 Martech Corp. (FullContact, a Ziff Davis company) | ZoomInfo Technologies LLC |
| Hosted endpoint | `https://api.fullcontact.com/v3` | `https://api.zoominfo.com/gtm` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | API key | OAuth |
| Pricing | Paid | Freemium |
| Licence | Proprietary service under the FullContact Terms of Use and Services Agreement. Client libraries on GitHub | Proprietary service under ZoomInfo's Licence Terms and Conditions. The GTM CLI on GitHub is MIT |
| Tools exposed | 1 | 26 |
| Last release | 2026-04-30 | 2026-10-02 |
| Terms last updated | 2025-03-21 | no date given |
| Privacy policy last updated | 2026-10-01 | 2025-10-13 |
| Customer content may train models | not found in the text | yes, with an opt-out |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | none | 534 npm/wk |