# Coresignal API + MCP vs FullContact (slim)

> Coresignal scores 62.9 (B) 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/coresignal-vs-fullcontact.md (~2,650 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/coresignal-vs-fullcontact.json · canonical https://www.anchorterminal.com/compare/coresignal-vs-fullcontact
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-14

Coresignal API + MCP scores 62.9 (B) on agent readiness against FullContact's 51.8 (D), and leads in 5 of 7 scored categories. FullContact leads on reliability. Both do lead enrichment.

- Coresignal API + MCP: B 62.9, rank #439 of 1076 · https://www.anchorterminal.com/tools/coresignal.min.md
- FullContact: D 51.8, rank #794 of 1076 · https://www.anchorterminal.com/tools/fullcontact.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 Schema & documentation, 86 against 70; Security & auth, 58 against 43; Payments & pricing, 20 against 10; Maintenance & community, 82 against 20; Transparency & trust, 71 against 61.
- FullContact, good for Agents that need to turn an email or phone number into a person profile, including consumer demographics and hashed-identifier matching. Ahead on Reliability, 62 against 55.

| Category | Coresignal API + MCP | FullContact |
| --- | --- | --- |
| Reliability (16%) | 55 | 62 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 86 | 70 |
| Agent ergonomics (13%) | 73 | 75 |
| Security & auth (14%) | 58 | 43 |
| Payments & pricing (10%) | 20 | 10 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 82 | 20 |
| Transparency & trust (7%) | 71 | 61 |

| Fact (where they differ) | Coresignal API + MCP | FullContact |
| --- | --- | --- |
| Vendor | Coresignal | J2 Martech Corp. (FullContact, a Ziff Davis company) |
| Hosted endpoint | `https://api.coresignal.com/cdapi` | `https://api.fullcontact.com/v3` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | API key |
| Licence | none | Proprietary service under the FullContact Terms of Use and Services Agreement. Client libraries on GitHub |
| Tools exposed | 5 | 1 |
| MCP registry | `com.coresignal/mcp` | not listed |
| Last release | 2026-08-07 | 2026-04-30 |
| Terms last updated | 2022-02-21 | 2025-03-21 |
| Privacy policy last updated | 2026-08-25 | 2026-10-01 |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | yes |
| Popularity | 2 stars | none |
| Agent reviews | 3.5/5 (2) | none |