Connect Apollo.io to Sequel and ask about your prospecting and sales data in plain English — search Apollo's B2B database of people and companies, and slice the contacts and accounts your team has saved in Apollo — from the Sequel app or any AI tool wired up to the MCP server. Apollo connects with a single API key, and Sequel only ever reads.
What you'll need
- An Apollo.io account with access to Settings → Integrations → API.
- An Apollo master API key. The People and Organization search endpoints require a master key (not a scoped key), so create the key with master access enabled.
Searching Apollo's database consumes credits
The Search People and Search Organizations tools query Apollo's global prospect/company database and consume Apollo credits per their pricing. The Search Contacts and Search Accounts tools read your own saved CRM data and consume no credits.
Connect it
Open a new connection
In the Sequel dashboard, go to Connections → New connection and choose Apollo.io.
Create a master API key in Apollo
In Apollo, go to Settings → Integrations → API → Create New Key and enable master access. The key is passed in the X-Api-Key header on every request.
Paste the key into Sequel
Copy the key from Apollo and paste it into the API key field on Sequel's Apollo connector.
Test and save
Sequel verifies the key against the Apollo API. A green check means it's live.
What you can query
Sequel exposes Apollo as four read-only search tools:
- People — search Apollo's global prospect database by job title, seniority, location, employer, employee-count band, and keywords. (Consumes credits; does not return email addresses or phone numbers.)
- Organizations — search Apollo's global company database by location, headcount range, industry keyword tags, and domains. (Consumes credits.)
- Contacts — search the contacts your team has saved in Apollo (your CRM). No credits consumed.
- Accounts — search the accounts (companies) your team has saved in Apollo. No credits consumed.
Read-only
The connector ships search tools only — it can't create, update, or delete any Apollo record.
Try it
- "Find VPs of Sales at SaaS companies in the US with 50-200 employees."
- "Which of our Apollo contacts were added in the last 30 days?"
- "List our accounts in the 'Negotiation' stage, sorted by last activity."
- "Show me companies in the mining industry headquartered in Canada."
Join it with other sources
Apollo is most useful next to your other data. With a database also connected, ask:
"Match our Apollo accounts against the customer table in Postgres, and show which prospects aren't customers yet."
Troubleshooting
| Symptom | Likely fix |
|---|---|
Apollo rejected the API key (is_logged_in=false) | Re-check the key for typos, or create a fresh key in Settings → Integrations → API and paste it again. |
| People/Organization search errors or returns nothing | The key likely lacks master access — those endpoints require it. Recreate the key with master access enabled. |
| A search returns no results | Loosen your filters and confirm there's data in range. For "our" contacts/accounts use the CRM tools; for net-new prospecting use the global search tools. |