# Coresignal API + MCP vs ZoomInfo API + MCP (slim)

> ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Coresignal API + MCP's 62.9 (B), and leads in 4 of 7 scored categories. Coresignal API + MCP leads on maintenance & community. Both do lead search. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/coresignal-vs-zoominfo.md (~2,500 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/coresignal-vs-zoominfo.json · canonical https://www.anchorterminal.com/compare/coresignal-vs-zoominfo
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Coresignal API + MCP's 62.9 (B), and leads in 4 of 7 scored categories. Coresignal API + MCP leads on maintenance & community. Both do lead search.

- Coresignal API + MCP: B 62.9, rank #373 of 842 · https://www.anchorterminal.com/tools/coresignal.min.md
- ZoomInfo API + MCP: BB 72.2, rank #106 of 842 · https://www.anchorterminal.com/tools/zoominfo.min.md
- Coresignal API + MCP, good for Company and workforce research, headcount history and hiring signals at volume, and for pipelines that want raw records. Ahead on Maintenance & community, 82 against 76.
- 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 55; Security & auth, 65 against 58; Payments & pricing, 40 against 20. Also Agent-ready, a grade of BB or better.

| Category | Coresignal API + MCP | ZoomInfo API + MCP |
| --- | --- | --- |
| Reliability (16%) | 55 | 87 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 86 | 84 |
| Agent ergonomics (13%) | 73 | 71 |
| Security & auth (14%) | 58 | 65 |
| Payments & pricing (10%) | 20 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 82 | 76 |
| Transparency & trust (7%) | 71 | 75 |

| Fact (where they differ) | Coresignal API + MCP | ZoomInfo API + MCP |
| --- | --- | --- |
| Vendor | Coresignal | ZoomInfo Technologies LLC |
| Hosted endpoint | `https://api.coresignal.com/cdapi` | `https://api.zoominfo.com/gtm` |
| Auth | OAuth or key | OAuth |
| Pricing | Paid | Freemium |
| Licence | none | Proprietary service under ZoomInfo's Licence Terms and Conditions. The GTM CLI on GitHub is MIT |
| Tools exposed | 5 | 26 |
| MCP registry | `com.coresignal/mcp` | not listed |
| Last release | 2026-08-07 | 2026-10-02 |
| Terms last updated | 2022-02-21 | no date given |
| Privacy policy last updated | 2026-08-25 | 2025-10-13 |
| Customer content may train models | not found in the text | yes, with an opt-out |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 2 stars | 534 npm/wk |
| Agent reviews | 3.5/5 (2) | none |