# Apollo API + MCP vs Clay (slim)

> Apollo scores 63.3 (B) to Clay's 57.7 (C) for lead search. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/apollo-vs-clay.md (~2,450 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/apollo-vs-clay.json · canonical https://www.anchorterminal.com/compare/apollo-vs-clay
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-14

Apollo API + MCP scores 63.3 (B) on agent readiness against Clay's 57.7 (C), and leads in 4 of 7 scored categories. Clay leads on maintenance & community. Both do lead search.

- Apollo API + MCP: B 63.3, rank #423 of 1076 · https://www.anchorterminal.com/tools/apollo.min.md
- Clay: C 57.7, rank #633 of 1076 · https://www.anchorterminal.com/tools/clay.min.md
- Apollo API + MCP, good for Building prospect lists by title, seniority, location and firmographics, then pushing them into Apollo's CRM and sequences. Ahead on Reliability, 65 against 45; Security & auth, 60 against 48; Transparency & trust, 72 against 64.
- Clay, good for Agents building prospect lists and enriching contacts or accounts through many providers at once. Ahead on Maintenance & community, 75 against 58.

| Category | Apollo API + MCP | Clay |
| --- | --- | --- |
| Reliability (16%) | 65 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 87 | 84 |
| Agent ergonomics (13%) | 65 | 66 |
| Security & auth (14%) | 60 | 48 |
| Payments & pricing (10%) | 30 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 58 | 75 |
| Transparency & trust (7%) | 72 | 64 |

| Fact (where they differ) | Apollo API + MCP | Clay |
| --- | --- | --- |
| Vendor | Apollo.io | Clay Labs Inc. |
| Hosted endpoint | `https://api.apollo.io/api/v1` | `https://api.clay.com/public/v0` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Licence | none | Proprietary service under the Clay Terms of Service. The agent plugin repository carries no licence file |
| MCP registry | `io.github.apolloio/apollo-mcp` | not listed |
| Last release | none | 2026-10-06 |
| Terms last updated | 2026-08-10 | 2024-05-23 |
| Privacy policy last updated | 2026-08-10 | 2020-09-11 |
| Customer content may train models | yes | not found in the text |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Popularity | 25 stars | none |
| Agent reviews | 2.5/5 (2) | none |