Coresignal vs Ocean.io

Company Search

Metric	Coresignal	Ocean.io
Category	Company Search	Company Search
Pricing	Freemium	Subscription
Auth	API Key	API Key
Format	JSON	JSON
Bot Blocking	None	None
OpenAPI Spec	No	Yes
Credit Card	Not required	Required
Rate Limit	18 req/s (collect), 54 req/s (bulk POST), 27 req/s (bulk GET)	60 req/min default across most endpoints. Returns Retry-After and X-RateLimit-Limit headers when exceeded. Higher limits available on request.

Score Component	Coresignal	Ocean.io
Base	+50	+50
OpenAPI Spec	0 (No)	+15 (Yes)
Auth	+10 (API Key)	+10 (API Key)
Format	+10 (JSON)	+10 (JSON)
Bot Blocking	+10 (None)	+10 (None)
No CC	+5 (Yes)	0 (No)
Free	0 (No)	0 (No)
Total	85	95

	Coresignal	Ocean.io
Pros	+ Massive scale — 3B+ records across companies, employees, and jobs with regular freshness updates + Official MCP server for direct LLM/agent integration with multi-source company, employee, and jobs APIs + Clean REST API with simple API key auth, Elasticsearch DSL support for complex queries, and bulk collect endpoints	+ Lookalike search endpoint lets agents find companies similar to a target — unique capability for ICP-driven prospecting that most enrichment APIs lack + Simple API key auth via x-api-token header or apiToken query param, JSON in/out, clean REST design at api.ocean.io/v2/* — trivial to integrate in any agent framework + Swagger/OpenAPI spec available at docs.oceanio.com, enabling auto-generated typed clients and agent tool discovery
Cons	- No free ongoing tier — free trial is 14 days only, paid plans start at $49/mo with limited credits - Raw data may require preprocessing (duplicates, HTML artifacts, inconsistent formatting from web-scraped sources)	- No free tier — 14-day trial requires credit card and annual contracts on paid plans, making it expensive to experiment with in agent workflows - Credit-based pricing for email/phone reveals adds budget-tracking complexity for autonomous agents that need to manage costs per action
Badges	API KeyFreemiumJSONBot Blocking: NoneNo CCb2b-datacompany-dataemployee-datajob-postingsfirmographicsbulk-queriesmcp-server	OpenAPI SpecAPI KeySubscriptionJSONBot Blocking: Nonecompany-searchpeople-searchcompany-enrichmentpeople-enrichmentlookalike-searchemail-finderphone-finderb2b-datalead-generation

Coresignal Integration

example.py

import requests
API_KEY = "your-api-key"BASE = "https://api.coresignal.com/cdapi/v2"headers = {"apikey": API_KEY, "accept": "application/json"}
# Collect company by IDresp = requests.get(f"{BASE}/company_base/collect/12345", headers=headers)print(resp.json())
# Search companiesresp = requests.post(f"{BASE}/company_base/search", headers=headers,    json={"name": "Anthropic", "country": "United States"})print(resp.json())

Ocean.io Integration

example.py

import requests
API_TOKEN = "YOUR_API_TOKEN"BASE = "https://api.ocean.io/v2"
# Enrich a company by domainresp = requests.post(    f"{BASE}/enrich/company",    params={"apiToken": API_TOKEN},    json={"domain": "stripe.com"})company = resp.json()print(company["name"], company["size"], company["industry"])