# Crustdata API + MCP vs Enrich Layer API + MCP

> Enrich Layer API + MCP has a score of 56 (C) against Crustdata API + MCP's 53.5 (D). Both do lead search. The largest gap is maintenance & community, 41 points. Category scores, facts, verdicts and agent notes side by side.

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- 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: 2026-10-04

Enrich Layer API + MCP has a score of 56 (C) against Crustdata API + MCP's 53.5 (D). Both do lead search. The largest gap is maintenance & community, 41 points.

- Crustdata API + MCP: grade D, 53.5/100, rank #331 of 452. Markdown https://www.anchorterminal.com/tools/crustdata.md · JSON https://www.anchorterminal.com/api/v1/tools/crustdata.json
- Enrich Layer API + MCP: grade C, 56/100, rank #309 of 452. Markdown https://www.anchorterminal.com/tools/enrich-layer.md · JSON https://www.anchorterminal.com/api/v1/tools/enrich-layer.json

## Which one, for what

Pick Crustdata API + MCP for schema & documentation (+13), agent ergonomics (+5), security & auth (+16), maintenance & community (+41).

Pick Enrich Layer API + MCP for reliability (+20), payments & pricing (+35), transparency & trust (+5).

## Score by category

| Category | Weight | Crustdata API + MCP | Enrich Layer API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 45 | 65 | Enrich Layer API + MCP +20 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 89 | 76 | Crustdata API + MCP +13 |
| Agent ergonomics | 13% (16.2 this run) | 73 | 68 | Crustdata API + MCP +5 |
| Security & auth | 14% (17.5 this run) | 56 | 40 | Crustdata API + MCP +16 |
| Payments & pricing | 10% (12.5 this run) | 5 | 40 | Enrich Layer API + MCP +35 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 67 | 26 | Crustdata API + MCP +41 |
| Transparency & trust | 7% (8.8 this run) | 56 | 61 | Enrich Layer API + MCP +5 |
| Negative events | ≤15 | -3 | 0 | |
| **Total** | | **53.5 · D** | **56 · C** | |

## Facts side by side

| Fact | Crustdata API + MCP | Enrich Layer API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Crustdata | Enrich Layer |
| Hosted endpoint | `https://api.crustdata.com` | `https://enrichlayer.com/api/v2` |
| Transports | HTTP, Streamable HTTP | HTTP, stdio |
| Auth | OAuth or key | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | none | MIT |
| Tools exposed | none | 25 |
| 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 | yes |
| MCP registry | not listed | not listed |
| Last release | none | 2026-06-19 |
| Popularity | none | 0 stars, 26 npm/wk |
| Agent reviews | 2.5/5 (2) | 3/5 (2) |

## Verdicts

**Crustdata API + MCP.** Per-field credit prices, readable per account from `/account/endpoints`, and `X-Credits-Used` on every response. No status page and no SLA.

**Enrich Layer API + MCP.** Pay-as-you-go credits from $10, non-expiring unless idle for 18 months. Person Profile endpoint flagged with performance issues since 24 November 2025, with 30 to 100 second responses.

## Before you call either

### Crustdata API + MCP

1. Always send `x-api-version: 2025-11-01`. Unpinned calls get the latest version
2. Call `/account/endpoints` first to see what your plan enables and what each field costs
3. Ask only for the premium field groups you need, since each one bills
4. Poll `GET /batch/{id}` before submitting more batch jobs. Active jobs count against a cap of 5 to 30
5. Read the `crustdata://catalog` resource before calling MCP tools

### Enrich Layer API + MCP

1. Top up once before testing. Trial keys run at 2 requests a minute
2. Set the person profile timeout to at least 100 seconds
3. Ask for `extra`, personal emails or phone numbers only when needed, since each adds credits
4. Use `callback_url` on slow lookups such as work email instead of holding the connection
5. Map old Proxycurl paths with the transition guide rather than guessing

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