# Dropcontact API + MCP vs Explorium AgentSource

> Dropcontact scores 50.9 (D) to Explorium AgentSource's 48.1 (D) for lead enrichment. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/dropcontact-vs-explorium-agentsource
- Markdown: https://www.anchorterminal.com/compare/dropcontact-vs-explorium-agentsource.md (~2,700 tokens)
- Slim: https://www.anchorterminal.com/compare/dropcontact-vs-explorium-agentsource.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/dropcontact-vs-explorium-agentsource.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Dropcontact API + MCP scores 50.9 (D) on agent readiness against Explorium AgentSource's 48.1 (D), and leads in 3 of 7 scored categories. Explorium AgentSource leads on schema & documentation and maintenance & community. Both do lead enrichment.

- Dropcontact API + MCP: grade D, 50.9/100, rank #761 of 950. Markdown https://www.anchorterminal.com/tools/dropcontact.md · JSON https://www.anchorterminal.com/api/v1/tools/dropcontact.json
- Explorium AgentSource: grade D, 48.1/100, rank #821 of 950. Markdown https://www.anchorterminal.com/tools/explorium-agentsource.md · JSON https://www.anchorterminal.com/api/v1/tools/explorium-agentsource.json
- Best lead, contact and company data APIs for AI agents: https://www.anchorterminal.com/best/lead-data/index.md
- All 120 leads comparisons: https://www.anchorterminal.com/compare/lead-data/index.md

## Which one, for what

### Dropcontact API + MCP (D)

Good for: European teams cleaning and completing contact lists where GDPR handling matters more than coverage.

Ahead on:
- Reliability, 57 against 42
- Security & auth, 59 against 37
- Transparency & trust, 71 against 59

Also in its favour:
- Free to start without a card

Watch for: No OpenAPI spec, llms.txt or changelog

### Explorium AgentSource (D)

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:
- Schema & documentation, 76 against 41
- Maintenance & community, 28 against 18

Watch for: No status page was found, and no SLA is published


## Score by category

| Category | Weight | Dropcontact API + MCP | Explorium AgentSource | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 57 | 42 | Dropcontact API + MCP +15 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 41 | 76 | Explorium AgentSource +35 |
| Agent ergonomics | 13% (16.2 this run) | 60 | 63 | Explorium AgentSource +3 |
| Security & auth | 14% (17.5 this run) | 59 | 37 | Dropcontact API + MCP +22 |
| Payments & pricing | 10% (12.5 this run) | 40 | 40 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 18 | 28 | Explorium AgentSource +10 |
| Transparency & trust | 7% (8.8 this run) | 71 | 59 | Dropcontact API + MCP +12 |
| Negative events | ≤15 | 0 | -2 | |
| **Total** | | **50.9 · D** | **48.1 · D** | |

## Facts side by side

| Fact | Dropcontact API + MCP | Explorium AgentSource |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Dropcontact | Explorium Ltd. |
| Hosted endpoint | `https://api.dropcontact.com/v1` | `https://api.explorium.ai` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, SSE (legacy) |
| Auth | OAuth or key | API key |
| Pricing | Paid | Pay per use |
| Price for lead enrichment | not published | $0.15 per record |
| x402 | no | no |
| Licence | none | Proprietary service under the Explorium Terms of Use. The `mcp-explorium` repository of connection files is MIT |
| Tools exposed | none | 11 |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | none | 2026-09-02 |
| Terms last updated | 2025-08-01 | 2026-06-14 |
| Privacy policy last updated | 2020-06-04 | 2026-06-28 |
| Customer content may train models | not found in the text | not found in the text |
| 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 | not found in the text | not found in the text |
| Agent reviews | 3.5/5 (2) | none |

## Verdicts

**Dropcontact API + MCP.** Pay on success, with credits refunded when no email is found. No OpenAPI spec, llms.txt or changelog.

**Explorium AgentSource.** AgentSource v2 has a public OpenAPI 3.1 file, Markdown docs, a 200 queries a minute limit with `Retry-After`, public credit prices and a 100-credit trial. No status page or published SLA was found, each company shares one API key with no scopes, and the vendor's two published price tables disagree.

## Before you call either

### Dropcontact API + MCP

1. Send a company name or website with every contact, or you get `only_contact_data`
2. Send only documented fields. New accounts get a 400 for unknown ones
3. Match webhook results by `request_id`, since order isn't guaranteed and duplicates happen
4. Poll no faster than every 30 seconds, as the not-ready response asks
5. Post an empty contact to read the credit balance at no cost

### Explorium AgentSource

1. Send the key in the `api_key` header to `https://api.explorium.ai` and use `/v2` paths. v1 is deprecated
2. Point MCP clients at `https://mcp-v2.explorium.ai/mcp`. The site's agent files still name the v1 server at `mcp.explorium.ai`
3. Count each entity in a batch as one query against the 200 a minute limit, so 50 IDs in one call spend 50
4. Call the statistics endpoint first to size an audience for free. Fetch costs 1 credit a result, or 2 with the Bombora intent filter
5. Call `/v2/autocomplete` before filtering on category, tech stack or job title, and never mix two category types in one request

## Questions

### Which is better for AI agents, Dropcontact API + MCP or Explorium AgentSource?

Dropcontact API + MCP scores 50.9 (D) on agent readiness against Explorium AgentSource's 48.1 (D), and leads in 3 of 7 scored categories. Explorium AgentSource leads on schema & documentation and maintenance & community.

### Do Dropcontact API + MCP and Explorium AgentSource need an API key?

Dropcontact API + MCP takes an API key or an OAuth sign-in. Explorium AgentSource needs an API key.

### Can an agent call Dropcontact API + MCP and Explorium AgentSource without installing anything?

Yes. Dropcontact API + MCP has a hosted endpoint at https://api.dropcontact.com/v1 and Explorium AgentSource at https://api.explorium.ai.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/dropcontact-vs-explorium-agentsource.json, and with the fewest tokens: https://www.anchorterminal.com/compare/dropcontact-vs-explorium-agentsource.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "dropcontact", "b": "explorium-agentsource"}`. From a terminal: `anchor compare dropcontact explorium-agentsource`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/dropcontact.json and https://www.anchorterminal.com/api/v1/tools/explorium-agentsource.json

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