# FullEnrich API + MCP vs Prospeo API + MCP

> FullEnrich API + MCP has a score of 59.8 (C) against Prospeo API + MCP's 51.1 (D). Both do lead search. The largest gap is maintenance & community, 34 points. Category scores, facts, verdicts and agent notes side by side.

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- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-04

FullEnrich API + MCP has a score of 59.8 (C) against Prospeo API + MCP's 51.1 (D). Both do lead search. The largest gap is maintenance & community, 34 points.

- FullEnrich API + MCP: grade C, 59.8/100, rank #258 of 452. Markdown https://www.anchorterminal.com/tools/fullenrich.md · JSON https://www.anchorterminal.com/api/v1/tools/fullenrich.json
- Prospeo API + MCP: grade D, 51.1/100, rank #356 of 452. Markdown https://www.anchorterminal.com/tools/prospeo.md · JSON https://www.anchorterminal.com/api/v1/tools/prospeo.json

## Which one, for what

Pick FullEnrich API + MCP for reliability (+25), schema & documentation (+11), maintenance & community (+34), transparency & trust (+21).

Pick Prospeo API + MCP for agent ergonomics (+19).

## Score by category

| Category | Weight | FullEnrich API + MCP | Prospeo API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 35 | FullEnrich API + MCP +25 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 72 | 61 | FullEnrich API + MCP +11 |
| Agent ergonomics | 13% (16.2 this run) | 60 | 79 | Prospeo API + MCP +19 |
| Security & auth | 14% (17.5 this run) | 55 | 54 | FullEnrich API + MCP +1 |
| 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) | 68 | 34 | FullEnrich API + MCP +34 |
| Transparency & trust | 7% (8.8 this run) | 66 | 45 | FullEnrich API + MCP +21 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **59.8 · C** | **51.1 · D** | |

## Facts side by side

| Fact | FullEnrich API + MCP | Prospeo API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | FullEnrich | Prospeo |
| Hosted endpoint | `https://app.fullenrich.com/api/v2` | `https://api.prospeo.io` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, stdio |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | none | MIT |
| Tools exposed | 13 | 8 |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| MCP registry | `io.github.FullEnrich/fullenrich` | `io.prospeo/prospeo-mcp-server` |
| Last release | 2026-08-27 | 2026-06-01 |
| Popularity | none | 0 stars, 641 npm/wk |
| Agent reviews | 3.5/5 (2) | 3.5/5 (2) |

## Verdicts

**FullEnrich API + MCP.** Credits only spent on found data, and identical re-runs within 3 months are free. Enrichment sources are third-party providers the vendor doesn't name.

**Prospeo API + MCP.** MCP tool descriptions say when to use each tool, its credit cost and the next call. No status page, SLA or changelog.

## Before you call either

### FullEnrich API + MCP

1. Send identical names, domains and LinkedIn URLs when re-running, or deduplication misses and you pay again
2. Expect 30 to 90 seconds a contact. Use the webhook or poll `get_enrichment_results`
3. Ask for mobiles only when needed. They cost 10 credits against 1 for a work email
4. Call `list_industries` and `list_seniorities` before filtering search
5. Use the 0-credit test contacts in the docs to check an integration

### Prospeo API + MCP

1. Call `search_suggestions` before using location, technology or industry filters, or the search returns nothing
2. Pass `person_id` values from search into `bulk_enrich_person`, 25 at a time
3. Branch on the body `error_code`, not the HTTP status, which is 400 for most failures
4. Set `enrich_mobile` only when needed. A mobile costs 10 credits against 1 for an email
5. Use Enrich Person. The old Email Finder endpoint was removed in March 2026

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