Apollo

Access the Apollo.io API with managed OAuth authentication. Search people and organizations, enrich contacts, and manage your sales pipeline.

Quick Start

# Search for people at a company
python <<'EOF'
import urllib.request, os, json
data = json.dumps({'q_organization_name': 'Google', 'per_page': 10}).encode()
req = urllib.request.Request('https://api.maton.ai/apollo/v1/mixed_people/api_search', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://api.maton.ai/apollo/{native-api-path}

Maton proxies requests to api.apollo.io and automatically injects your API key.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

export MATON_API_KEY="YOUR_API_KEY"

Getting Your API Key

1. Sign in or create an account at maton.ai
2. Go to maton.ai/settings
3. Copy your API key

Connection Management

Manage your Apollo connections at https://api.maton.ai.

List Connections

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections?app=apollo&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Create Connection

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'apollo'}).encode()
req = urllib.request.Request('https://api.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Get Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "connection": {
    "connection_id": "{connection_id}",
    "status": "ACTIVE",
    "creation_time": "2025-12-08T07:20:53.488460Z",
    "last_updated_time": "2026-01-31T20:03:32.593153Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "apollo",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Specifying Connection

If you have multiple Apollo connections, specify which one to use with the Maton-Connection header:

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'q_organization_name': 'Google', 'per_page': 10}).encode()
req = urllib.request.Request('https://api.maton.ai/apollo/v1/mixed_people/api_search', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '{connection_id}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If you have multiple connections, always include this header to ensure requests go to the intended account.

Security & Permissions

• Access is scoped to contacts, accounts, opportunities, sequences, and email data within the connected Apollo account.
• All write operations require explicit user approval. Before executing any create, update, or delete call, confirm the target resource and intended effect with the user.

API Reference

People

Search People

POST /apollo/v1/mixed_people/api_search
Content-Type: application/json

{
  "q_organization_name": "Google",
  "page": 1,
  "per_page": 25
}

Enrich Person by Email

POST /apollo/v1/people/match
Content-Type: application/json

{
  "email": "john@example.com"
}

Enrich Person by LinkedIn

POST /apollo/v1/people/match
Content-Type: application/json

{
  "linkedin_url": "https://linkedin.com/in/johndoe"
}

Organizations

Search Organizations

POST /apollo/v1/organizations/search
Content-Type: application/json

{
  "q_organization_name": "Google",
  "page": 1,
  "per_page": 25
}

Enrich Organization

POST /apollo/v1/organizations/enrich
Content-Type: application/json

{
  "domain": "google.com"
}

Contacts

Search Contacts

POST /apollo/v1/contacts/search
Content-Type: application/json

{
  "page": 1,
  "per_page": 25
}

Create Contact

POST /apollo/v1/contacts
Content-Type: application/json

{
  "first_name": "John",
  "last_name": "Doe",
  "email": "john@example.com",
  "organization_name": "Acme Corp"
}

Update Contact

PUT /apollo/v1/contacts/{contactId}
Content-Type: application/json

{
  "first_name": "Jane"
}

Accounts

Search Accounts

POST /apollo/v1/accounts/search
Content-Type: application/json

{
  "page": 1,
  "per_page": 25
}

Create Account

POST /apollo/v1/accounts
Content-Type: application/json

{
  "name": "Acme Corp",
  "domain": "acme.com"
}

Sequences

Search Sequences

POST /apollo/v1/emailer_campaigns/search
Content-Type: application/json

{
  "page": 1,
  "per_page": 25
}

Add Contact to Sequence

POST /apollo/v1/emailer_campaigns/{campaignId}/add_contact_ids
Content-Type: application/json

{
  "contact_ids": ["contact_id_1", "contact_id_2"]
}

Labels

List Labels

GET /apollo/v1/labels

Search Filters

Common search parameters:

• q_organization_name - Company name
• q_person_title - Job title
• person_locations - Array of locations
• organization_num_employees_ranges - Employee count ranges
• q_keywords - General keyword search

Code Examples

JavaScript

const response = await fetch(
  'https://api.maton.ai/apollo/v1/mixed_people/api_search',
  {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    },
    body: JSON.stringify({
      q_organization_name: 'Google',
      per_page: 10
    })
  }
);

Python

import os
import requests

response = requests.post(
    'https://api.maton.ai/apollo/v1/mixed_people/api_search',
    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'},
    json={'q_organization_name': 'Google', 'per_page': 10}
)

Notes

• Pagination uses page and per_page in POST body
• Most list endpoints use POST with /search suffix
• Email enrichment consumes credits
• people/search and mixed_people/search are deprecated - use mixed_people/api_search
• IMPORTANT: When using curl commands, use curl -g when URLs contain brackets (fields[], sort[], records[]) to disable glob parsing
• IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments. You may get "Invalid API key" errors when piping.

Error Handling

Status	Meaning
400	Missing Apollo connection
401	Invalid or missing Maton API key
429	Rate limited (10 req/sec per account)
4xx/5xx	Passthrough error from Apollo API

Troubleshooting: API Key Issues

1. Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

2. Verify the API key is valid by listing connections:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Troubleshooting: Invalid App Name

1. Ensure your URL path starts with apollo. For example:

• Correct: https://api.maton.ai/apollo/v1/mixed_people/api_search
• Incorrect: https://api.maton.ai/v1/mixed_people/api_search

Resources

• Apollo API Overview
• Search People
• Enrich Person
• Search Organizations
• Enrich Organization
• Create Contact
• LLM Reference
• Maton Community
• Maton Support