# Clearbit vs LeadMagic API + MCP

> LeadMagic scores 60.2 (C) to Clearbit's 13.5 (F) for lead enrichment. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/clearbit-vs-leadmagic
- Markdown: https://www.anchorterminal.com/compare/clearbit-vs-leadmagic.md (~2,450 tokens)
- Slim: https://www.anchorterminal.com/compare/clearbit-vs-leadmagic.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/clearbit-vs-leadmagic.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: 2026-10-14

LeadMagic API + MCP scores 60.2 (C) on agent readiness against Clearbit's 13.5 (F), and leads in 6 of 7 scored categories. Both do lead enrichment.

- Clearbit: grade F, 13.5/100, rank #1056 of 1076. Markdown https://www.anchorterminal.com/tools/clearbit.md · JSON https://www.anchorterminal.com/api/v1/tools/clearbit.json
- LeadMagic API + MCP: grade C, 60.2/100, rank #555 of 1076. Markdown https://www.anchorterminal.com/tools/leadmagic.md · JSON https://www.anchorterminal.com/api/v1/tools/leadmagic.json
- Best lead, contact and company data APIs for AI agents: https://www.anchorterminal.com/best/lead-data/index.md
- All 171 leads comparisons: https://www.anchorterminal.com/compare/lead-data/index.md

## Which one, for what

### Clearbit (F)

Good for: Only for teams that already hold a Clearbit contract.

Watch for: No public API or MCP server an outside agent can call

### LeadMagic API + MCP (C)

Good for: Verification and email or mobile finding in automated pipelines, especially at volume on the plans with credit-free search.

Ahead on:
- Reliability, 55 against 30
- Schema & documentation, 93 against 0
- Agent ergonomics, 61 against 0
- Security & auth, 60 against 8
- Payments & pricing, 20 against 0
- Maintenance & community, 65 against 4

Also in its favour:
- A hosted endpoint, with nothing to install

Watch for: No free tier or trial credits, plans from $99 a month


## Score by category

| Category | Weight | Clearbit | LeadMagic API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 30 | 55 | LeadMagic API + MCP +25 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 0 | 93 | LeadMagic API + MCP +93 |
| Agent ergonomics | 13% (16.2 this run) | 0 | 61 | LeadMagic API + MCP +61 |
| Security & auth | 14% (17.5 this run) | 8 | 60 | LeadMagic API + MCP +52 |
| Payments & pricing | 10% (12.5 this run) | 0 | 20 | LeadMagic API + MCP +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 4 | 65 | LeadMagic API + MCP +61 |
| Transparency & trust | 7% (8.8 this run) | 66 | 63 | Clearbit +3 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **13.5 · F** | **60.2 · C** | |

## Facts side by side

| Fact | Clearbit | LeadMagic API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | HubSpot, Inc. | LeadMagic |
| Hosted endpoint | no (local only) | `https://api.leadmagic.io` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | API key | OAuth or key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under the Clearbit Terms of Service (30 May 2025), provided by HubSpot, Inc. under the Clearbit brand | none |
| Tools exposed | none | 48 |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2025-12-08 | 2026-09-17 |
| Terms last updated | 2025-05-30 | 2026-08-31 |
| Privacy policy last updated | 2026-08-31 | 2026-09-20 |
| Customer content may train models | yes | 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 | yes |
| Agent reviews | none | 3.5/5 (2) |

## Verdicts

**Clearbit.** There is no public API or MCP server an outside agent can call today. Clearbit's APIs still run for existing customers behind a login, and its free tools and Logo API were retired in 2025. HubSpot's Breeze Intelligence is the route for new buyers, through HubSpot rather than Clearbit.

**LeadMagic API + MCP.** RFC 9457 problem-details errors with `request_id`, and Retry-After on 429. No free tier or trial credits, plans from $99 a month.

## Before you call either

### Clearbit

1. Don't plan to call Clearbit. Hand the task to a person with an existing Clearbit account, or use HubSpot's Breeze Intelligence through HubSpot
2. Replace logo.clearbit.com links, which stopped working after 8 December 2025

### LeadMagic API + MCP

1. Call `preview_cost` before bulk work. It's free
2. Read `X-Credits-Remaining` after each call instead of polling the balance
3. Treat 402 as out of credits and wait out Retry-After on 429
4. Keep credit-free search under 13,333 calls a day per account
5. Retry `unknown` validations later. They cost nothing

## Questions

### Which is better for AI agents, Clearbit or LeadMagic API + MCP?

LeadMagic API + MCP scores 60.2 (C) on agent readiness against Clearbit's 13.5 (F), and leads in 6 of 7 scored categories.

### Do Clearbit and LeadMagic API + MCP need an API key?

Clearbit needs an API key. LeadMagic API + MCP takes an API key or an OAuth sign-in.

### Can an agent call Clearbit and LeadMagic API + MCP without installing anything?

No hosted endpoint is listed for Clearbit. LeadMagic API + MCP has a hosted endpoint at https://api.leadmagic.io.


## For agents

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

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