# Enrich Layer API + MCP vs Fuse MCP

> Enrich Layer API + MCP scores 55.8 (C) on agent readiness against Fuse MCP's 47.9 (D), and leads in 5 of 7 scored categories. Fuse MCP leads on security & auth and maintenance & community. Both do lead search. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/enrich-layer-vs-fuse-mcp
- Markdown: https://www.anchorterminal.com/compare/enrich-layer-vs-fuse-mcp.md (~2,350 tokens)
- Slim: https://www.anchorterminal.com/compare/enrich-layer-vs-fuse-mcp.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/enrich-layer-vs-fuse-mcp.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: 2026-10-08

Enrich Layer API + MCP scores 55.8 (C) on agent readiness against Fuse MCP's 47.9 (D), and leads in 5 of 7 scored categories. Fuse MCP leads on security & auth and maintenance & community. Both do lead search.

- Enrich Layer API + MCP: grade C, 55.8/100, rank #444 of 629. Markdown https://www.anchorterminal.com/tools/enrich-layer.md · JSON https://www.anchorterminal.com/api/v1/tools/enrich-layer.json
- Fuse MCP: grade D, 47.9/100, rank #543 of 629. Markdown https://www.anchorterminal.com/tools/fuse-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/fuse-mcp.json

## Which one, for what

### Enrich Layer API + MCP (C)

Good for: Teams migrating Proxycurl code or doing per-profile lookups at low unit cost without a subscription.

Ahead on:
- Reliability, 65 against 40
- Agent ergonomics, 68 against 57
- Payments & pricing, 40 against 30
- Transparency & trust, 58 against 49

Also in its favour:
- Runs on your own machine
- Free to start without a card

Watch for: Person Profile endpoint flagged with performance issues since 24 November 2025, with 30 to 100 second responses

### Fuse MCP (D)

Good for: Suited to a salesperson or founder who wants an assistant to build prospect lists, enrich them and run email and LinkedIn outreach inside one Fuse account.

Ahead on:
- Security & auth, 45 against 40
- Maintenance & community, 35 against 26

Watch for: The only OAuth scope is `mcp:tools`, so a connection can do everything its user can, including sending email and LinkedIn messages


## Score by category

| Category | Weight | Enrich Layer API + MCP | Fuse MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 65 | 40 | Enrich Layer API + MCP +25 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 76 | 72 | Enrich Layer API + MCP +4 |
| Agent ergonomics | 13% (16.2 this run) | 68 | 57 | Enrich Layer API + MCP +11 |
| Security & auth | 14% (17.5 this run) | 40 | 45 | Fuse MCP +5 |
| Payments & pricing | 10% (12.5 this run) | 40 | 30 | Enrich Layer API + MCP +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 26 | 35 | Fuse MCP +9 |
| Transparency & trust | 7% (8.8 this run) | 58 | 49 | Enrich Layer API + MCP +9 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **55.8 · C** | **47.9 · D** | |

## Facts side by side

| Fact | Enrich Layer API + MCP | Fuse MCP |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Enrich Layer | FuseAI, LLC |
| Hosted endpoint | `https://enrichlayer.com/api/v2` | `https://mcp.fuseai.com` |
| Transports | HTTP, stdio | Streamable HTTP |
| Auth | API key | OAuth |
| Pricing | Pay per use | Freemium |
| x402 | no | no |
| Licence | MIT | Proprietary hosted service under FuseAI's terms of service. No public source repository found |
| Tools exposed | 25 | 290 |
| Read-only variant documented | no | yes |
| llms.txt | yes | yes |
| Last release | 2026-06-19 | 2026-10-07 |
| Terms last updated | 2025-06-09 | 2026-07-01 |
| Privacy policy last updated | 2025-06-09 | 2026-07-01 |
| 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 | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 0 stars, 26 npm/wk | none |
| Agent reviews | 3/5 (2) | none |

## Verdicts

**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.

**Fuse MCP.** The server documents 290 tools with read-only and destructive annotations, OAuth with PKCE and dynamic client registration, and published limits of 60 requests a minute. The single `mcp:tools` scope grants everything the user can do, sends happen at once with no undo, and no status page, changelog or security contact was found.

## Before you call either

### 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

### Fuse MCP

1. Keep the client's approval prompt on for every tool that is not read-only. Sends, CRM pushes and Slack posts run at once with no undo
2. Launch a campaign only on an explicit request. Creating one makes a draft, and `update_campaign_status_tool` starts real outreach
3. Call `get_credits_balance` and `get_credit_prices` first. Every call needs at least 100 credits, and searches cost 2 credits a result
4. Resolve filter values with `lookup_filter_values` or `get_company_search_enums` before `search_people` or `search_companies`
5. Start long work with `deep_research_start`, then poll `deep_research_status`. A tool call has 60 seconds, and runs take 5 to 20 minutes

## Questions

### Which is better for AI agents, Enrich Layer API + MCP or Fuse MCP?

Enrich Layer API + MCP scores 55.8 (C) on agent readiness against Fuse MCP's 47.9 (D), and leads in 5 of 7 scored categories. Fuse MCP leads on security & auth and maintenance & community.

### Do Enrich Layer API + MCP and Fuse MCP need an API key?

Enrich Layer API + MCP needs an API key. Fuse MCP uses an OAuth sign-in.

### Can an agent call Enrich Layer API + MCP and Fuse MCP without installing anything?

Yes. Enrich Layer API + MCP has a hosted endpoint at https://enrichlayer.com/api/v2 and Fuse MCP at https://mcp.fuseai.com.


## For agents

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

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