# Clearbit vs Prospeo API + MCP

> Prospeo scores 50.9 (D) 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-prospeo
- Markdown: https://www.anchorterminal.com/compare/clearbit-vs-prospeo.md (~2,550 tokens)
- Slim: https://www.anchorterminal.com/compare/clearbit-vs-prospeo.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/clearbit-vs-prospeo.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

Prospeo API + MCP scores 50.9 (D) on agent readiness against Clearbit's 13.5 (F), and leads in 6 of 7 scored categories. Clearbit leads on transparency & trust. 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
- Prospeo API + MCP: grade D, 50.9/100, rank #814 of 1076. Markdown https://www.anchorterminal.com/tools/prospeo.md · JSON https://www.anchorterminal.com/api/v1/tools/prospeo.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.

Ahead on:
- Transparency & trust, 66 against 42

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

### Prospeo API + MCP (D)

Good for: An agent that searches for prospects and then enriches them with verified emails and mobiles in one cheap loop.

Ahead on:
- Reliability, 35 against 30
- Schema & documentation, 61 against 0
- Agent ergonomics, 79 against 0
- Security & auth, 54 against 8
- Payments & pricing, 40 against 0
- Maintenance & community, 34 against 4

Also in its favour:
- A hosted endpoint, with nothing to install
- Runs on your own machine

Watch for: No status page, SLA or changelog


## Score by category

| Category | Weight | Clearbit | Prospeo API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 30 | 35 | Prospeo API + MCP +5 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 0 | 61 | Prospeo API + MCP +61 |
| Agent ergonomics | 13% (16.2 this run) | 0 | 79 | Prospeo API + MCP +79 |
| Security & auth | 14% (17.5 this run) | 8 | 54 | Prospeo API + MCP +46 |
| Payments & pricing | 10% (12.5 this run) | 0 | 40 | Prospeo API + MCP +40 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 4 | 34 | Prospeo API + MCP +30 |
| Transparency & trust | 7% (8.8 this run) | 66 | 42 | Clearbit +24 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **13.5 · F** | **50.9 · D** | |

## Facts side by side

| Fact | Clearbit | Prospeo API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | HubSpot, Inc. | Prospeo |
| Hosted endpoint | no (local only) | `https://api.prospeo.io` |
| Transports | HTTP | HTTP, Streamable HTTP, stdio |
| Auth | API key | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | Proprietary service under the Clearbit Terms of Service (30 May 2025), provided by HubSpot, Inc. under the Clearbit brand | MIT |
| Tools exposed | none | 8 |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| MCP registry | not listed | `io.prospeo/prospeo-mcp-server` |
| Last release | 2025-12-08 | 2026-06-01 |
| Terms last updated | 2025-05-30 | couldn't be read |
| Privacy policy last updated | 2026-08-31 | couldn't be read |
| Customer content may train models | yes | couldn't be read |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | not found in the text | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Popularity | none | 0 stars, 641 npm/wk |
| 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.

**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

### 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

### 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

## Questions

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

Prospeo API + MCP scores 50.9 (D) on agent readiness against Clearbit's 13.5 (F), and leads in 6 of 7 scored categories. Clearbit leads on transparency & trust.

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

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

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

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


## For agents

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

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