# Clay vs FullContact (slim)

> Clay scores 57.7 (C) 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/clay-vs-fullcontact.md (~2,550 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/clay-vs-fullcontact.json · canonical https://www.anchorterminal.com/compare/clay-vs-fullcontact
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-14

Clay scores 57.7 (C) on agent readiness against FullContact's 51.8 (D), and leads in 5 of 7 scored categories. FullContact leads on reliability and agent ergonomics. Both do lead enrichment.

- Clay: C 57.7, rank #633 of 1076 · https://www.anchorterminal.com/tools/clay.min.md
- FullContact: D 51.8, rank #794 of 1076 · https://www.anchorterminal.com/tools/fullcontact.min.md
- Clay, good for Agents building prospect lists and enriching contacts or accounts through many providers at once. Ahead on Schema & documentation, 84 against 70; Security & auth, 48 against 43; Payments & pricing, 30 against 10; Maintenance & community, 75 against 20.
- 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 45; Agent ergonomics, 75 against 66.

| Category | Clay | FullContact |
| --- | --- | --- |
| Reliability (16%) | 45 | 62 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 84 | 70 |
| Agent ergonomics (13%) | 66 | 75 |
| Security & auth (14%) | 48 | 43 |
| Payments & pricing (10%) | 30 | 10 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 75 | 20 |
| Transparency & trust (7%) | 64 | 61 |

| Fact (where they differ) | Clay | FullContact |
| --- | --- | --- |
| Vendor | Clay Labs Inc. | J2 Martech Corp. (FullContact, a Ziff Davis company) |
| Hosted endpoint | `https://api.clay.com/public/v0` | `https://api.fullcontact.com/v3` |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Paid |
| Licence | Proprietary service under the Clay Terms of Service. The agent plugin repository carries no licence file | Proprietary service under the FullContact Terms of Use and Services Agreement. Client libraries on GitHub |
| Tools exposed | none | 1 |
| Last release | 2026-10-06 | 2026-04-30 |
| Terms last updated | 2024-05-23 | 2025-03-21 |
| Privacy policy last updated | 2020-09-11 | 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 |
| Arbitration or class-action waiver | yes | not found in the text |