# Coresignal API + MCP vs Explorium AgentSource (slim)

> Coresignal scores 62.9 (B) to Explorium AgentSource's 48.1 (D) for lead search. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/coresignal-vs-explorium-agentsource.md (~2,700 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/coresignal-vs-explorium-agentsource.json · canonical https://www.anchorterminal.com/compare/coresignal-vs-explorium-agentsource
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Coresignal API + MCP scores 62.9 (B) on agent readiness against Explorium AgentSource's 48.1 (D), and leads in 6 of 7 scored categories. Explorium AgentSource leads on payments & pricing. Both do lead search.

- Coresignal API + MCP: B 62.9, rank #413 of 950 · https://www.anchorterminal.com/tools/coresignal.min.md
- Explorium AgentSource: D 48.1, rank #821 of 950 · https://www.anchorterminal.com/tools/explorium-agentsource.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 Reliability, 55 against 42; Schema & documentation, 86 against 76; Agent ergonomics, 73 against 63; Security & auth, 58 against 37; Maintenance & community, 82 against 28; Transparency & trust, 71 against 59.
- Explorium AgentSource, good for Agents that build prospect lists by filter and then enrich them, or that watch companies for events such as funding and role changes. Ahead on Payments & pricing, 40 against 20.

| Category | Coresignal API + MCP | Explorium AgentSource |
| --- | --- | --- |
| Reliability (16%) | 55 | 42 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 86 | 76 |
| Agent ergonomics (13%) | 73 | 63 |
| Security & auth (14%) | 58 | 37 |
| Payments & pricing (10%) | 20 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 82 | 28 |
| Transparency & trust (7%) | 71 | 59 |

| Fact (where they differ) | Coresignal API + MCP | Explorium AgentSource |
| --- | --- | --- |
| Vendor | Coresignal | Explorium Ltd. |
| Hosted endpoint | `https://api.coresignal.com/cdapi` | `https://api.explorium.ai` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, SSE (legacy) |
| Auth | OAuth or key | API key |
| Pricing | Paid | Pay per use |
| Licence | none | Proprietary service under the Explorium Terms of Use. The `mcp-explorium` repository of connection files is MIT |
| Tools exposed | 5 | 11 |
| MCP registry | `com.coresignal/mcp` | not listed |
| Last release | 2026-08-07 | 2026-09-02 |
| Terms last updated | 2022-02-21 | 2026-06-14 |
| Privacy policy last updated | 2026-08-25 | 2026-06-28 |
| 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 |