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ContactOut vs Tomba

Email Finder

ContactOut
ContactOut
85
VS
Tomba
85
Tomba
Metric ContactOut Tomba
Category Email Finder Email Finder
Pricing Subscription Freemium
Auth API Key API Key
Format JSON JSON
Bot Blocking None None
OpenAPI Spec No No
Credit Card Not required Not required
Rate Limit Not publicly documented; governed by plan-level credit allocation and fair-use policy (~2,000 email lookups, ~1,000 phone lookups/month on standard plans). 100-300 req/min depending on endpoint (e.g. Domain Search 15 req/s, Finder 300 req/min, LinkedIn Finder 100 req/min)
Score Component ContactOut Tomba
Base +50 +50
OpenAPI Spec 0 (No) 0 (No)
Auth +10 (API Key) +10 (API Key)
Format +10 (JSON) +10 (JSON)
Bot Blocking +10 (None) +10 (None)
No CC +5 (Yes) +5 (Yes)
Free 0 (No) 0 (No)
Total 85 85
ContactOut Tomba
Pros
  • + Simple token-header auth and clean JSON responses make integration straightforward for any agent framework — no OAuth flows or complex handshakes
  • + Rich enrichment from minimal input — agents can resolve a LinkedIn URL or email into full contact details (work/personal emails, phones, social profiles) in a single call
  • + Async batch endpoints with callback URLs let agents process bulk lookups without polling, ideal for pipeline-style agent workflows
  • + Official MCP server available -- agents can use Tomba tools directly via Model Context Protocol with zero custom integration
  • + SDKs in 8+ languages (Python, Node, Go, Ruby, PHP, Rust, Deno, R) with clean structured JSON responses ideal for LLM parsing
  • + Generous endpoint variety (20 endpoints) covering the full email intelligence pipeline: find, verify, enrich, phone, tech detection
Cons
  • - No self-serve API access — agents cannot be provisioned programmatically; a human must book a sales call to obtain an API key
  • - No public OpenAPI spec or official SDKs, so agents can't auto-discover endpoints or generate typed clients
  • - Auth requires both API key AND secret (two headers: X-Tomba-Key + X-Tomba-Secret), slightly more complex than single-key APIs
  • - Free tier is very limited (25 searches/month) -- agents doing any meaningful volume will hit paid tiers quickly
Badges
API KeySubscriptionJSONBot Blocking: NoneNo CCemail-finderphone-finderlinkedin-enrichmentpeople-searchcompany-searchemail-verificationb2b-datacontact-enrichment
API KeyFreemiumJSONBot Blocking: NoneNo CCemail-finderemail-verificationdomain-searchenrichmentb2blead-generationmcp-server

ContactOut Integration

example.py
import requests
headers = {    "Content-Type": "application/json",    "Accept": "application/json",    "token": "YOUR_API_TOKEN"}
# Enrich a LinkedIn profileresp = requests.get(    "https://api.contactout.com/v1/people/linkedin",    headers=headers,    params={"profile": "https://www.linkedin.com/in/johndoe"})data = resp.json()print(data["profile"]["emails"], data["profile"]["phones"])

Tomba Integration

example.py
from tomba.client import Clientfrom tomba.services.finder import Finder
client = Client()client.set_key('ta_xxxx').set_secret('ts_xxxx')
finder = Finder(client)result = finder.email_finder('stripe.com', 'John', 'Doe')print(result)