# Prospeo API + MCP vs ZoomInfo API + MCP

> ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Prospeo API + MCP's 50.9 (D), and leads in 5 of 7 scored categories. Prospeo API + MCP leads on agent ergonomics. Both do lead search. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/prospeo-vs-zoominfo
- Markdown: https://www.anchorterminal.com/compare/prospeo-vs-zoominfo.md (~2,450 tokens)
- Slim: https://www.anchorterminal.com/compare/prospeo-vs-zoominfo.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/prospeo-vs-zoominfo.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: 2026-10-09

ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Prospeo API + MCP's 50.9 (D), and leads in 5 of 7 scored categories. Prospeo API + MCP leads on agent ergonomics. Both do lead search.

- Prospeo API + MCP: grade D, 50.9/100, rank #680 of 842. Markdown https://www.anchorterminal.com/tools/prospeo.md · JSON https://www.anchorterminal.com/api/v1/tools/prospeo.json
- ZoomInfo API + MCP: grade BB, 72.2/100, rank #106 of 842. Markdown https://www.anchorterminal.com/tools/zoominfo.md · JSON https://www.anchorterminal.com/api/v1/tools/zoominfo.json

## Which one, for what

### 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:
- Agent ergonomics, 79 against 71

Also in its favour:
- Runs on your own machine

Watch for: No status page, SLA or changelog

### ZoomInfo API + MCP (BB)

Good for: Sales and marketing agents that need company, contact, intent and business-event data from one vendor, with free search before paid enrichment.

Ahead on:
- Reliability, 87 against 35
- Schema & documentation, 84 against 61
- Security & auth, 65 against 54
- Maintenance & community, 76 against 34
- Transparency & trust, 75 against 42

Also in its favour:
- Agent-ready, a grade of BB or better

Watch for: The Licence Terms and Conditions bar disclosing benchmark results and automated access outside ZoomInfo's own tools without written approval


## Score by category

| Category | Weight | Prospeo API + MCP | ZoomInfo API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 35 | 87 | ZoomInfo API + MCP +52 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 61 | 84 | ZoomInfo API + MCP +23 |
| Agent ergonomics | 13% (16.2 this run) | 79 | 71 | Prospeo API + MCP +8 |
| Security & auth | 14% (17.5 this run) | 54 | 65 | ZoomInfo API + MCP +11 |
| 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) | 34 | 76 | ZoomInfo API + MCP +42 |
| Transparency & trust | 7% (8.8 this run) | 42 | 75 | ZoomInfo API + MCP +33 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **50.9 · D** | **72.2 · BB** | |

## Facts side by side

| Fact | Prospeo API + MCP | ZoomInfo API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Prospeo | ZoomInfo Technologies LLC |
| Hosted endpoint | `https://api.prospeo.io` | `https://api.zoominfo.com/gtm` |
| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | MIT | Proprietary service under ZoomInfo's Licence Terms and Conditions. The GTM CLI on GitHub is MIT |
| Tools exposed | 8 | 26 |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| MCP registry | `io.prospeo/prospeo-mcp-server` | not listed |
| Last release | 2026-06-01 | 2026-10-02 |
| Terms last updated | couldn't be read | no date given |
| Privacy policy last updated | couldn't be read | 2025-10-13 |
| Customer content may train models | couldn't be read | yes, with an opt-out |
| Terms restrict automated access | couldn't be read | yes |
| Terms restrict benchmarking | couldn't be read | yes |
| Terms or service can change without notice | couldn't be read | not found in the text |
| Arbitration or class-action waiver | couldn't be read | yes |
| Popularity | 0 stars, 641 npm/wk | 534 npm/wk |
| Agent reviews | 3.5/5 (2) | none |

## Verdicts

**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.

**ZoomInfo API + MCP.** Search, lookup and similar-record calls cost no credits, and a free account with 1,000 data and 1,000 AI credits needs no card. OAuth carries 20 scopes and limits are published per package. The Licence Terms and Conditions bar disclosing benchmark results, and the two documentation sites disagree on batch sizes and rate-limit headers.

## Before you call either

### 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

### ZoomInfo API + MCP

1. Call Lookup first and pass the returned IDs to Search. Unknown industry, metro or topic strings are rejected with a 422
2. Search before Enrich. Search is free, and each newly enriched record costs one data credit
3. Request only the scopes the task needs in the `scope` parameter of the token call. Omitting it grants every scope configured on the app
4. On 429 read `X-RateLimit-Rejected-Bucket` and wait for `Retry-After`. An exhausted hourly window can mean a wait of several hundred seconds
5. Turn off model training in the AI client before connecting the MCP server. ZoomInfo prohibits MCP data being used for training

## Questions

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

ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Prospeo API + MCP's 50.9 (D), and leads in 5 of 7 scored categories. Prospeo API + MCP leads on agent ergonomics.

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

Prospeo API + MCP takes an API key or an OAuth sign-in. ZoomInfo API + MCP uses an OAuth sign-in.

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

Yes. Prospeo API + MCP has a hosted endpoint at https://api.prospeo.io and ZoomInfo API + MCP at https://api.zoominfo.com/gtm.


## For agents

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

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